Патент USA US2571164

Oct. 16, 1951
F, M; POOLE
'
2,571,161
AUTOMATIC RECORDING TUBE CALIPERS FOR
INSIDE MEASUREMENTS WITHIN CYLINDERS
Filed Feb. 23, 1946
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F. M. POOLE
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INSIDE MEASUREMENTS WITHIN CYLINDERS
Filed Feb. 23, 1946
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Oct- 16, 1951
F. M. POOLE
2,571,161
AUTOMATIC RECORDING TUBE CALIPERS FOR
INSIDE MEASUREMENTS WITHIN CYLINDERS
Filed Feb. 25, 1946
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INSIDE MEASUREMENTS WITHIN CYLINDERS
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Filed Feb. 25, 1946
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AUTOMATIC RECORDING TUBE CALIPERS FOR
INSIDE MEASUREMENTS WITHIN CYLINDERS
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Oct. 16, 1951
F_ M, POOLE
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AUTOMATIC RECORDING TUBE CALIPERS FOR
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AUTOMATIC RECORDING TUBE CALIPERS FOR
INSIDE MEASUREMENTS WITHIN CYLINDERS
Filed Feb. 25, 1946
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Patented Oct. 16, 1951
2,571,161
UNITED STATES PATENT" OFFICE
AUTOMATIC RECORDING TUBE‘ 'oALr'PERs‘
FOR INSIDE MEASUREMENTS WITHIN’
CYLINDERS
Foster M. Poole, Dallas, Teiz.
Application February 23, 1946, Serial N0. 649,650
20 Claims.
(01. 33-178)
1
2
This invention relates to measuring instru
ments, and with regard to certain more speci?c
features, to automatic recording tube calipers for
inside measurements within cylinders.
Among the several objects of the invention
Hl—lil of Fig. 1 and of Fig. 11 and showing-a
may be noted the provision of a measuring in
strument in the form of an inspection ?xture
recorder;
'
.
-
' ~
Fig. 11 is a vertical section taken on line I l--l l
of Fig. 10; -
I
Fig. 12 is a fragmentary front elevation of a
single recorder dial;
'
r
Fig. 13 is a view similar to Fig. 12 showing‘ a
for conventiently and quickly determining, indi
moved position of certain parts;
Fig. 14 is an enlarged elevation of a recorder,
cating and registering inside sizes in automo
being viewed from line l4—-|4 of Fig. 1;
tive cylinders and the like; the provision of a
Fig. 15 is an enlarged'horizontal section taken
measuring instrument of the calss described ar
on line I5—l5 of Fig. 11, parts being broken away
ranged for gang operation whereby an entire
for condensation of the view;
group of cylinders in a given engine block or the
Fig. 16 is a plan view of a recorder unit, being
like may be inspected simultaneously; the pro
vision of apparatus -of the class described in 15 taken on line l6—l6 of Fig. 11, parts being
broken away;
which the measurements taken during an opera
Fig. 1'7 is an enlarged vertical section taken on
tion are visibly continuously indicated and limits
line 11-41 of Fig. 1;
of deviation shown; the provision of apparatus
Fig. 18 is a front elevation of Fig. 17, parts
of this class in which symbols coordinated with
deviations are physically recorded on the engine 20 being broken away to show details;
Fig. 19 is a horizontal section taken on lin
block or the like being measured; the provision
l9—l9of Fig. 18;
of apparatus of this class which provides diame
Fig. 20 is a simpli?ed circuit diagram;
tr-al measurements at given axial points in the
Fig. 21 is a wiring diagram of one of several
cylinders and also measurements of taper, both
of said measurements being obtainable in two 25 recorders;
Fig. 22 is a wiring diagram for one of several
perpendicular planes; and the provision of ap
stencil
motor drives; and,
'
paratus of the class described which may be
Fig. 23 is a detail of a roller-operated switch.
simply, conveniently and speedily operated.
Similar reference characters indicate corre- ‘
Other objects will be in part obvious and in part
sponding parts throughout the several views 0
pointed out hereinafter.
the drawings.
'
The invention accordingly comprises the ele
In my United States Patent 2,348,643, dated
ments and combinations of elements, features of
May 9, 1944, is disclosed in Fig. 1 a measuring
construction, and arrangements of parts which
transmitter instrument for internal calipering of
will be exempli?ed in the structures hereinafter .,
described, and the scope of the application of
which will be indicated in the following claims.
In the accompanying drawings, in which one
of various possible embodiments of the invention
is illustrated,
Fig. 1 is a front elevation of the apparatus,
parts being broken away;
Fig. 2 is a right-side elevation of Fig. 1, parts
being broken away;
.
Fig. 3 is a fragmentary section taken on line
3—3 of Fig. 1 but showing an alternative posi
tion of parts;
a cylinder. Several similar transmitters are used
in the present invention, operating in parallel
in multi-cylinder engine blocks. As may be seen
from the patent and below, each transmitter
which is indexed R herein consists broadly in
a cylindric body adapted to be introduced loosely
into the cylinder to be measured. The trans
mitter cylinder carries radially moving balls
which traverse the inside of the cylinder to be
measured, the balls being pressed outward by
means of a pneumatically biased cone. The cone
controls the position ofla ?rst armature which
is operative in a coil having two sections which
are electrically bridged with two sections in a
Fig. 4 is a horizontal section taken on line 4-4
of Fig. 1;
receiver coil in a recording meter. The coil
Fig. 5 is a horizontal section taken on line 5-5 50 sections in the recording meter control a second
of Fig. 1;
armature which in turn controls the meter ac
cording to‘ the amount of unbalance introduced
Fig. 6 is an enlarged detail section taken on
line 6—6 of Fig. 4;
into the circuit by motion of the ?rst armature.
Thus inequalities in the surface of the cylinder
Fig. 7 is an enlarged longitudinal section of
a transmitter, being taken on line 1-—1 of Fig. 3; 55 are visually registered by moving the balls
through the cylinder to be measured. The pres
Fig. 8 is an enlarged detail section taken on
line 8—8 of Fig. 2;
ent invention employs transmitters of this class
in a way such as quickly visually to produce
Fig. 9 is a horizontal section taken on line
9-9 of Fig. 7;
measurements and to register them fora group
Fig. 10 is a detail section taken along lines 60 of cylinders, for example in eight cylinders of
2,571,16i
3
1
4
.
.
an eight-cylinder engine block. Thus such blocks
may be quickly inspected for reliable quantity
The upper end of the cylinder 35 carries a head
production.
ter passing through the bearing 5| and mem
ber 49 into ?xed engagement with the holder 31.
53 from which extendsa ?xed tube 55, the lat
Referring now more particularly to Figs. 1-3,
A ‘spring 57 forces an electromagnetic coil con
there is shown at numeral l a foundation carry
ing a ?xed bed 3 which supports a vessel 5, the
latter forming a liquid sump.
sisting of two sections 59 into engagement with
the bearing 5|. This provides for a zero adjust
ment of the coil relatively to a slidable magnetic
armature 5| ‘in the ?xed tube 55'. The arma
This vessel is
closed at the bottom by means of the head '1.
Within the vessel 5 is a cylinder 9 which is also
closed at the bottom by said head .1. This cyl 10 ture 6| is normally biased by a tension spring
63 in the tube 55. ,The spring is anchored in
inder 9 carries an elevating piston H on the
the holder 3'! by 'a'pin 4. The armature 6|, by
upper end of which is carried a hollow air-tight
means of a fastening 65, is coupled to a non
platen l3. Extending upward from the ‘bed 3
magnetic stem 61, the upper end of which car
are four posts, two diagonal ones of which are
numbered l5 and the other two diagonal ones of 15 ries a ?at disc 59. Below the disc is a bumper
spring 5. Beyond the disc is located a hard,
which are numbered ll. The diagonally oppo
accurately tapered cone ‘H which is held prisoner
site posts |5 act as guides through bearings l9
to the disc by means of a fastener 13. Fastener
formed at opposite corners of the platen l3. The
13 has a head 8 under which is held an inner
posts I‘! do not pass through bearings in platen
|3 but are free from it.
20 shoulder ID of the cone.
All of the posts l5 and I‘! support a station
ary ?xture 2| in the top surface of which are
The cone may move
laterally on disc 69 but not endwise relatively
thereto, although it may move endwise therewith.
The cone may also rotate relatively to the disc.
A thrust bearing 11 is located between the cone
ture 2| carries longitudinal guide means 23 and
a manually rotary end stop 25 for predeter 25 and the disc 69.
Bearing radially against the cone ‘II are mem
minately positioning on the rollers 22 an engine
bers of a pair of oppositely located balls 8|.
block 21 to be tested. The stop 25 may at will
These are held prisoner by means of threaded
be rotated counterclockwise (Fig. 2) to pass a
bushings 83. It will be clear‘ that the radial posi
block that has been tested (see also the dotted
tions of the balls'8| are determined by the axial
position of 25 in Fig. 5).
position of ‘the cone 1|. Lateral holding of the
I The block 21 under consideration has several
cone 7| is determined by small balls 85, which
bored cylinders 29 (eight in the present exam
are held in‘ bushings 8'! closed by means of
ple) which are to be checked for diameter size,
threaded plugs'89. Additional balls 9| in bush
roundness and taper. For this purpose the
guides 23 and stop 25 are arranged to position 35 ings 93 are biased toward the co‘ne‘ll by springs
|2,' thus tending'to hold the cone with its median
the respective center lines of the cylinders sub
plane'in the median‘ plane of the balls 8|. The
stantially on the respective center lines of open
stated coplanar relationship is indicated by the
ings 3| in the ?xture 2| (see Figs. 2, 3, 5 and 8).
dotted line M->—P 'of'Fig; 9. This is an important
The spacings of the center lines of the cylinders
located supporting roller bearings 22. This ?x
29 and those of the openings 3| are about the 40 improvement in transmitters‘ofrthis class. In
previous'twoepoint‘ measuring devices of this type,
same, within tolerable limits, so that respective
such coplanar relationship was not maintained.
pairs of said openings 29 and 3| are in substan
The openings 3| are provided
In the present case, once the proper adjustment
near their lower ends with hard steel or similar
of the plugs 89 has been made for the purpose,
the median plane M—P lo'f'the cone 7| remains
the diametral plane common to the balls 8|,
tial alignment.
circular master gage rings 33, the inside diame
ters of which are of the proper sizes intended
for the diameters of the cylinders 29. Above the
master gage rings 33 are hardened steel guide
sleeves 34 for purposes which will appear. These
have inside diameters about equal to those of
the respective gage rings 33. Gage rings 33 have
oppositely disposed collars 36 and 38 which over
lap where tangent as shown in Figs. 5 and 8. As
indicated in Fig. 3, which is a section ata right
angle to Fig. 8, there is only one gage ring 55
per opening, rings of alternate openings having
the alternate collars shown in Fig. 8. Coaxial
with the openings 3| are the cylindric transmit.
irrespective of the longitudinal or rotary move
ments of the cone. Stated otherwise, the cone 1!
is cradled by‘the' balls 85 in the proper median
position and it is‘ resiliently held in its cradled
position by means of the resiliently mounted balls
8|. It will be noted that the bushings 83, 8? and
93 are located in’a head-95 held on member 53.
At the end of this extension 95 is a guiding nose
91.
As will be seen later, each transmitter R ac
complishes its measurements by a downward
movement of the balls 8| through a cylinder 29.
Thus the balls 8| will tend to rotate in the di
rection shown by the arrows in Fig. 8 which is
ters R which are of the‘general type described
in said patent, and more particularly of an im
a direction tending to move the cone downward
proved form such as shown in Figs. ‘7-9 herein.
in Fig. *8. This tendency is overcome by the
Referring to Figs. 7-9, each transmitter R con
pressure effect of the air in the tube 55 tending
sists in an air-tight cylinder 35 attached to a
to extrude the stem 61“ from said tube. This
hollow holder 31 by means of three posts, one of
which is hollow as shownat 39 in Fig. '7. Each 65 tends to press the disc 69 and to keep the cone
‘H snugly against the balls while expanding the
holder carries a flange 4| which is received in
latter into contact with the cylinder that is to
an opening 43 on the top of the hollow platen |3
(see Figs. 1 and 7). Packing is used to make
be measured. vAir is brought into the tube 55
an air-tight connection as shown at 45. Each
from'the holder-31. The holder 3'"! is in com
holder 31 is held upright by means of a holding 70 munication with compressed air inside of the hol
ring 2 fastened to the top of the platen I3. Each
is rotary in the top of the hollow platen l3.
low platen I3. The communication is through
At the lower end of the air-tight cylinder 35 is
a head 41 in which is a threaded adjusting-‘mem
openings M of a-bushing l6. A wire cable'l??
enters the bushing ‘from the inside of the platen
|_3_.r - This cable I96,‘ passes toltyhe coil 59 via the
ber 49. Member 49 backs a thrust bearing 5|.
hollow post 39.
The cable, with the others serv
2,571,161..
5
6 ,.
ing' the transmitters, passes out of the platen I3
ried on- bearings 46 located in an individual com-1
partment- 48 which is removable from the rear
through an airtight joint, as indicated at I8 in
Fig.- 3. Compressed air is fed to the inside of the:
platen I3 via com1ection'20.
From. the above it will be seen that the traverse
of a set of opposite balls 8I down a cylinder 29
will give diametral readings in a, given plane.
In order that diametral readings in a plane at
90° may be obtained, the transmitters R have
of the case I2‘I. Each dial is driven by a gear I3'I
_
attached to shaft I35. Gear I3‘! is driven through.
a gear train I39 leading from a two-phase bal
ancing motor I4I. The motor MI is connected
into the circuit illustrated in Fig. 21 wherein I43
indicates an A. C. supply line. This supply line
I43, through a transformer I45 and leads I41,
been made rotary in the top of the platen I3, the 10 supplies an impedance bridge circuit including
?anges 4I being rotary under packings 45. In
coil sections 59 and I52 and leads I48, I49 and
order to rotate the transmitters simultaneously,
I50.
each holder 3'I is provided with a lever vI 0i’ which
at its outer end is mechanically coupled with a
sections 59 of the transmitter R and across cor
These leads are connected across said coil
responding sections I52 of a coil I'5I. The arma
translation coupler bar I09, the latter having a 15 ture 6| of the transmitter R is shown in Fig. 21..
pivoted handle III. When the handle III is
A corresponding armature I53 is associated with
thrown sidewise a predetermined distance, it will
the sections I52 of coil I5I. As indicated in Fig.‘
rotate all transmitters R through 90° (note the
21, the center tap I60 on each pair of coil sec
dotted lines in Fig. 4).
tions 59 and I52 supplies an input transformer
In either 90° position of every transmitter R 20 I55 via line I49. This input transformer I55
it is desirable that it be oscillated through a
feeds an ampli?er I5'I which through leads I59
slight angle as it traverses a cylinder so as to
feeds one phase of the motor MI. The other
prevent undue localized wear on the respective
phase of the motor is fed from the A. C. line I43
balls 8!. To accomplish this the handle III is
via leads I6I.
formed as a T, the head I24 of which swings 25
Connected with the gear I31 on the shaft I35
' vertically on the pivots I 22 (Figs. 4 and 6). The
is a pinion I63 which is meshed with a sector
head I24 of the T carries openings I26 and I28
gear I65 swinging on a pivot I61. This sector
which are in effect alternate followers for a hori
gear I65 carries an arcuate shoe I69 over which
zontally rotary cam I30. This cam lies above
is wrapped and connected a ?exible band I‘II such
the upper surface of the platen I3. The cam is 30 as a ?exible steel ribbon. This ribbon is connect
mounted on a cam shaft I32 which passes
ed with the armature I53. The latter is biased’
through an opening I34 in said upper surface.
by suitable means such as a spring ‘I0.
This opening is suitably packed to prevent air
Thus each motor E4I controls the position of
leakage. The shaft I32 is driven by a motor I38
its associated dial I33. When the feeler balls
and a gear reduction box I40. Thus in either of 35 6| are held in a predetermined position for prop
the 90° positions of the transmitters R, they are
er diameter, as in the gage rings 33, the arma
slightly rocked on vertical axes due to the driving
ture I53 may be considered to be in a position to’
action of the cam I30. The driving action is
hold its respective dial I33 at zero reference posi
delivered to the transmitters R through the bar
tion for nominal diameter opposite the corre
I24, pivots I22, bar I09 and levers I01. As indi 40 sponding marker I3I. Then, upon introducing
cated by the dotted lines in Fig. 4, the rocking
the transmitter R into a cylinder deviating from
action is effective in either position of the handle
the desired nominal diameter, the feeler balls 8I
III. It will be understood that preliminary to
will change their radial positions, thus affecting
moving the handle III it is always raised so as
movement of the cone ‘II so as to reposition the
to clear the cam I30, but at the end of an ad
armature 6I. This unbalances the impedance
justment the handle is always again lowered so
bridge circuit so as to energize the input side of
as to place the cam I30 into a, respective one of
the transformer I55. Any small unbalance is
the openings £26 or I28. The cam is arranged
ampli?ed in the ampli?er I51 and applied to
to shift the transmitters R through 4° in an in
leads I59 to one phase of the motor I4I, the other
terval of ?ve seconds.
50 phase of the motor being energized over connec
It will also be noted in connection with Fig.
tion I6I. Thus the motor MI is caused to repo
4 that the end of the coupler bar I09 in one posi
sition the armature I53 to establish a new balance
tion of the transmitters R contacts a bar 42 of
of the impedance bridge circuit. A low A. C.
a gang of switches. These will be referred to
voltage arising from any minute unbalancing of
later.
7
-
In their lowermost positions the transmitters
R are as indicated in Figs. 1 and 2. In such posi
tions the balls 8| are against the hard steel gage
55 the bridge is ampli?ed suf?ciently to energize the
balancing motor. The phase of this A. C. voltage
is dependent upon the direction of the movement
of thearmature 6| to reestablish balance of‘ the
impedance bridge. The proper direction and
rings 33 are of such size that the balls 8| take 60 amount of movement of armature I53 will re
up a position providing a zero reference, as will
establish balance of the impedance bridge circuit.
later appear.
.
The balancing motor I4I is a reversible variable
Supported by means of posts I2I on the bed 3
speed induction motor, one winding of which is
rings 33 in the ?xture 2| (see Fig. 8).
These
continuously energized by line voltage and the
Openings 65 other energized by the ampli?ed alternating volt
I29 carry zero index reference marks I3I. Be
age whose phase with respect to the line voltage
hind each opening is an indicating unit of the
determines the direction of rotation of the motor.
Thus the phase is in effect recognized by the bal
type shown in Figs. 10-16. There are as many
indicating units as cylinders to be tested, eight
ancing motor I4 I', hence determining its direction
in the present example. Each unit has exposed 70 of rotation. It is to be understood that any two
phase motor will remain stationary when one of
behind the respective opening I29 a part of the
its phases is deenergized. Therefore wheneverv
periphery of a dial drum I33 which carries plus
there is no energization of the connection I59 the
and minus index marks starting at the nominal
cylinder size. Each dial drum I33 is rotary with
motor I4I "will be stationary. The result is that
a shaft I35 being pinned at 44. Shaft I35 is car 75 the motor action follows the measuring actionqf
is a platform I25 which carries a case I21 in
which are spaced dial openings I29.
2,571,161
7
the balls 8I, in one direction for plusdeviation:
from nominal diameter and. in the" reverse direc
tion for minus deviation from nominal diameter.
After each ‘following action and balancing of the
impedance bridge circuit, the dial drum I33 takes
up a new position proportionately following the
deviations from nominal. diameter.
A'dishedspring disc I8I serves to maintain co
planar the thin sector gear I65 and the pinion
gear I83.
On opposite sides of the drum I33 are station
ary gudgeons I83 and I85'which are respectively
fastened to the sides of the compartment 48.
Referring to the gudgeon I83, it carries rotary
hubs I81 and I89 upon which are, respectively,
pointers I9I and I93. The pointers I9I and I93
pass out through the opening I92 and carry
8.
and 23I. Energization of the coil 221 will draw‘
together the magnetic hubs so as to provide light
frictional clutch engagement to hold the pointers
2 II and~2 I3 at maximum de?ections.
When re-'
leased, the pointers 2H and 2I3 will gravitate
against the end 223 of the pin 200, provided the
pin is in a position to the left of that shown in
Fig. 16. As above mentioned in connection with
springs 209, the springs 233 may be omitted.
Referring to Fig. 16, it is to be understood that
the pin 200 when in the position shown will aifect
the‘ pointers I9I and I93 for maximum readings
by said pointers. When the pin is in its alterna
tive position to the left, its end 223 is inserted
into the eye MI and its other end is withdrawn
from the eye between the pointers I9I and I93.
A solenoid coil 65 carried on the drum I33 serves
radially adjacent ?ngers I95 and I91, respec
to control the position of pin 200, the pin being
endv of an armature pin 200, when this pin is in
the‘ position shown in Fig. 16. The pointer I93
goes under the pin and the pointer I9I over it.
Since the hubs I81 and I89, are freely rotary
on the gudgeon I83, pointers I9I and I93 will be
in Fig. 16. This is when coil 66 is deenergized.
This is due to return spring 68.
movable through the center of the coil. Normally
tively, next to the face of the dial I33 The
pointers I9I and I93 are offset as shown at I99 20? the pin 200 is biased to the operative position in
connection with pointers I9I and I93, as shown
in Fig. 10 to provide an eye for receiving the
moved by means of the pin 200 as the latter is
moved with the drum I33. In order that the
pointer I 93 may be biased against the bottom
of: the pin 200, a weight 203 is provided to the
rear of its hub I89. The pointer I9I is biased
by its own weight against the top of the pin 200.
The purpose of the pointers I9I and I93 is
to obtain maximum and minimum readings, as
indicatedin Fig. 13. In order to have the pointers
HI and I93 remain in moved positions of the
same, a magnetic clutch is provided consisting
of a stationary armature 205 on the gudgeon I83.
In this clutch is a toric coil 201. U-shaped
Each drum I33 carries a brush contact I15
which sweeps a commutator I11. The purpose
of this is to set up electrical conditions for index
ing a punch dial unit 50. There are as many dial
units 50 as there are cylinders, namely, eight in
the present example. These units are carried
upon a shelf 52 extending over a pan rail 54 of
the engine block being tested.
In each unit 50 (Figs. 17-19) is a rotary punch
dial I82 around the periphery of which are ver
tically sliding punches I80, each being biased
-.upward into a retracted position by a spring 56
(Fig. 17). Each punch carries on its lower face
a suitable mark or symbol to be made on the pan
rail 54 of the engine block 21. The symbols on
the punches correspond to off dimensions, as in‘
springs 209 normally bias apart the hubs ‘I81 40 dicated on the corresponding dial I33. Con
sidering, for example, the four symbols on each
and I89. These hubs I81 and I89 are magnetic.
side of the nominal dimension on a dial I33, there
Hence when the coil 201 is energized, the hubs
are nine corresponding punches I80, one for each
will be drawn into light frictional engagement
of the eight off-dimension symbols and a cen
with the springs 209. Therefore if and when
tral one for the nominal dimension'symbol. Also,‘
either pointer I9I or I93 is positioned by the
the commutator resistor I11 has a number of
rotary action of the drum I33 and pin 200, the
insulated segments 58, that is, a central one and
respective pointer will maintain the maximum
four on each side, totaling nine. Between the
angular de?ection to which it may be pushed
segments 58 are manually adjustable resistances
in a given operation. Thus the pointers become
maximum or minimum reading devices, whereas 50 60. These control the action of a respective po
sitioning motor I84. This motor through a shaft
the dial drum I33 is a continuously reading de
I86 and a worm gear set I88 controls the rotary
vice. Whenever the coil 201 is deenergized, the
position of the respective punch dial 282. Each
hubs I81 and I39 are pushed apart by springs
motor I84 may be of the permanent magnet type.
209 and-become released from friction and fall
back into their positions against the pin 200. 55 Coupled to each disc I82 is an arm 62 of a rheo
stat 64.
The-springs 209 are not absolutely necessary in
In order to operate each of the motors I84 so
all‘ designs of the apparatus, since magnetic
as to turn the corresponding disc I82, each motor
clutches may be made to open without springs
I84 and corresponding rheostat 64 are placed
of this type.
On the other side of the drum I33 and on 60 in an electronic circuit such as shown in Fig. 22.
Fig. 22 shows schematically one electronic re
gudgeon I85 are similar pointers 2H and 2I3,
lay circuit whereby an action of a brush I15 on
the latter being counterweighted, as indicated at
a commutator I11 is accompanied by a follow-up
2I5. The pointers 2H and 2I3 carry ?ngers 2I1
action by‘ a motor I84 to cause in turn a proper
and 2I9, respectively. They are also bent to
form‘ between them an eye 22I for accommodat 65 setting of a'punoh-setting disc I82. There are
eight of these circuits. Referring to said Fig. 22,
ing the opposite end 223 of the pin 200 when the
Whichsliows one of these-circuits, there is shown
latter is moved to the left from the position shown
at numeral NI 9. low voltage transformer fed
in Fig. 16. The portion of the eye formed by'the
from the A. C. power line I43. This transformer
pointer 2 I3 goes beneath the pin and that formed
by the pointer 2“ goes above‘ the pin when‘the 70 20I feeds a bridgev circuit shown at the left of
Fig. 22, This bridge circuit consists of the com
pin is moved. On the gudgeon I85 is a stationary
mutator I11 on one side and the resistance of
clutch member 225 having a toric‘ coil.221 mag;
theirheostat 64 on the other side. The ends of
netically operative upon the magnetic hubs 229
the commutator I11 and rheostat 64 are con
andF23I, respectively, of the pointers 2 I I and 2 I3.
Spring» ‘clips. 233i serve to bias . apartvthe'ihub‘s 229 75 nected by wires ‘204 which are 'fed‘fr'om the trans
2,571,161
10
direction, the motor I84 is moved in a direction
to cause the arm 62 again to balance the bridge,
at which time the contact 235 will reopen to
stop the motor. Motor action sets the punch disc
I 82 in a proportion corresponding to the amount
the arm 62 is driven from the motor I84. Motor
that the brush I15 has moved. This sets the
I84 is shown at the right in Fig. 22 and it is to
proper punch I80 with the proper index char
be understood that it controls the position of
acter over the pan rail 54. The respective index
62. A dash line has been drawn in Fig. 22 to
characters ‘correspond to those on the dial I33.
indicate this fact.
To give each properly set punch a blow so that
Transformer 206 supplies the input for an am 10
it will register the proper symbol on the pan rail
pli?er circuit shown at the right which includes
54, a hammer unit is provided above each punch
a center-tapped secondary of said transformer
indexing unit. This hammer unit (Figs. 1'1 and
206 forming at 208 an adjustable resistance. The
18) consists of a vertical bearing 245 for a ham
latter is connected with the cathodes 2 I0 of elec
tronic tubes 2I2 and 2I4. These tubes are of the 15 mer 241, the latter being normally biased up by a
spring 249. The upper end of the hammer 241
gas-?lled type 70L'1-GT. The cathode heaters
is in a cylinder 25I which carries a closely ?tting
2 I6 of these tubes are energized from the line I43
movable ball 253, for example 11/2 in. in diameter.
through the transformer 20 I.
This ball is biased upward by a conical spring
A connection 222 feeds current through the
adjustable resistance 208 to the cathodes 2I0, 20 255. The ball 253 is periodically subjected to
manually controlled air pressure of approximate
the circuit then being traceable to the plates 220
ly 30 p. s. 1. through a port 251. A second ball
and 224, respectively, of the tubes 2I2 and 2I4.
259, for example 1 in. in diameter, protrudes
The plate 220 feeds a relay coil 226 and plate 224
into cylinder 25I from the end of a port 26I
feeds a relay coil 228. Coils 226 and 228 are con
nected to the other side of the line I43 by wires 25 and is subjected to manually controlled air pres
sure of approximately 60 p. s. i. in said port 26I.
230. The coils 226 and 228 control an armature
When the 30 p. s. i. pressure is applied in port
232 which in turn controls a contact 235 of a
251, the total pressure on the ball 253 becomes
reversing switch 231 for the reversible motor I84.
enough to push it past ball 259. As ball 253
Condensers 234 damp the pulsating effects of the
pulsating direct current ?owing through the coils 30 passes the center line of ball 259, the former is
quickly accelerated to give a sharp blow to the
226 or 228.
top
of hammer 241. This blow is transmitted to
When the contactors I15 and 62 are in the
the punch I80, thereby causing the latter to mark
vsame relative positions in the bridge of their
the pan rail 54. After air release, the spring 255
members I11 and 64, respectively, no current will
flow to the primary of the transformer 206. 35 returns the ball 253. The control of air pressure
in passages 251 and 26I will later be described.
Hence there will be no output from the secondary
Referring now to Fig. 20, which shows a ‘com
of this transformer. However, according to the
plete schematic diagram of the apparatus for one
setting of the rheostat 208, there will be a cer
set of parts, the remaining elements and opera
tain amount of current ?owing through the tubes
tion will now be described. It will be understood
40
2I2 and 224 through the coils 226 and 228, re
that the several additional electrical parts are
spectively, thus holding the contact 235 in the
connected in parallel as required for additional
mid position. By adjusting the rheostat 208, the
transmitters and recorders but are not shown, for
current through the coils 226 and 228 may be
clarity of description.
_
made just below the required amount for either
Each engine block 21 to be tested is placed,
coil to draw over the armature 232.
' with pan rails 54 up, on the rollers 22 and be
Then if the brush I15 is moved to the right orv
tween the guides 23‘. The block is pushed into
left, current will flow through the primary of
position against the stop 25 which is in the po
the transformer 206 with a certain polarity. The
sition shown in the solid lines in Figs. 1, 2 and 5.
ends of the secondary of the transformer 206 will
In Fig. 5 the engine block is not in position but
assume a corresponding polarity, thus making‘
it is in position in Figs. 1 and 2. The ?xture 2I
the grid of one tube more positive and the .grid
upon which the block is thus mounted may be
of the other tube more negative. The grids of the
referred to as an inspection table. The place
tubes 2I2 and 2M are indexed 239 and 24I, re
ment of the engine block as described makes it
spectively. Thus one tube is blocked and the
possible upon raising the platen I3 to drive the
other increases its feed with respect to its re-v
transmitters R axially into the respective cylin
spective one of the coils 226, 228.- This closes the
ders of the block. This is done by admitting
switch 231 in one direction. Thus for an un
?uid from the sump 5 to the cylinder 9 via pipe
balanced condition of‘the bridge circuit due to
263.
movement of the brush I15, the current ?owing
Switch A is a momentary-break switch which is
former 20I as shown. Brush I15 is electrically
connected to arm 62 through the primary of a
transformer 206. As has already been described,
.the brush I15 is driven from the dial E33 and
through one of the tubes 2| 2 or 2I4 increases 60 normally closed. It is fed from line I43 over
while the other decreases.
wires MI and 303. It is for starting the rise of
Moving the brush I15 to the left, for example,
the platen I3 as will appear. This switch A is
will make the brush I15 positive and the arm 62
connected to the load contacts 309 of a holding
' negative. Moving the brush I15 to the right will
in relay R3 (see wire 305). Relay R3 is normally
make the brush I15 negative and the arm 62 posi-, 65 open. The coil 301 of this relay, in addition to
tive. Thus in effect the circuit of Fig. 22 is a
a connection to a source of initial excitation, is
polarized relay, the armature 232 closing ‘the
connected in series with its own load contact 309.
contact 235 to the left when brush I15 is moved
The source of initial excitation for this relay R3
is a normally open limit switch LrWhiCh is car
to the left, and said contact 235 to the right
when the brush I15 is moved toward the right. 70 ried upon the platen I3 and is operated to close
by an upper ring-shaped cam 365. The circuit
The condenser and resistance combination 243
comprises wire 30I from line wire 335, switch
increases the ei?oien-cy of response by properly
relating the phase of the input signal applied to
L1, wires 3I I, 3I1, coil 301, wires 3'I5, 3I3 and 3I9,
the grids 239 and 24L
back to wire 331 of power circuit I43.
,
'
The limit
As soon as the brush. H5 is moved in a given’ 75 switch L1 is normally open and becomes closed
‘2,571,161
12
at the top of the travel of the platen I-3. It re
opens on its way down in moving from the cam
365 so that it is again open at the lower end-of
its-travel.
A three-way solenoid valve V1, when deener
gized by deenergization of relay R3, feeds a regu
‘lated air supply to the sump 5 over pipe 323'.
Therefore, when switch A is opened (even tem
porarily), relay R3 opens and will not reclose
vuntil limit switch L1 causes it to do so. As long
as the relay R3 is open, there is no energization
of valve V1. This is because V1 obtains its cur
rent from relay'Rz via line 3 I ‘I.
An air supply regulator is shown at 201. The
air connection from pipe 323 is above the ?uid ‘
in the sump 5, which tends to force fluid out from
the sump into the cylinder 9 via pipe 293. When
the solenoid valve V1 is energized, it shuts off
this supply of air pressure and vents the air in
the sump 5 to atmosphere, as will appear.
A parallel-connected solenoid condensate valve
V3 which is normally open becomes energized to
close when relay R2 is energized, being in parallel
with V1 across lines 3H and 3I9. This valve V3_
closes a condensate vent 34l from the platen ' ‘
I3, or opens this vent when V3 is deenergized.
A check valve 269 allows free flow in the direc
tion from the sump 5 to the side of the cylinder
9 but restricts reverse ?ow. The necessary re
turn-?ow restriction is made adjustable. A sole
noid valve Vt- is normally open, which allows the
stated flow.
A three-way solenoid valve V2 becomes ener
gized when relay R3 is energized. The circuit 1,
for the purpose from side 335 of the line I43 ~
‘ comprises wires 30I, 303, closed switch A, wire
305, relay R3 when closed, wires v3I'I, 325, 321,
329, solenoid valve V2, wires 33I and 333 to the
other side 33'! of the line I 43.
This valve V2 feeds a regulatedsupply of air
to the interior of the hollow platen I3 overpipe
32I (see Figs. 2, 3 and 20). This feeds air to
all of the transmitters R so as to press their
measuring cones ‘II and to spread the feeler balls
8| outward. When deenergized, V2 shuts off this
air supply and at 339 vents the air in the trans
, mittersto atmosphere.
The motor I38, which operates the cam I20
as already described, is connected in parallel
with the solenoid valve V2 and is fed from the
relay R3. It functions only during the downward
movement of the platen 13, as will appear.
Switch L1 is thus at this timethe initial source
of excitation to energize relay R3. Solenoid
valves V1 and V2 shut off the loading air pres
sures and vent the air in the sump 5 to atmos
phere and admit air to the platen I3 and hence
to the transmitters R, as explained above. The
motor I38, at this time being also energized'by
the relay R3, starts to function. The transmit
ters R now, upon descent, make their measure
ments of the progressive diameters encountered
in the engine cylinders, to indicate such diam
eters on their respective dials I33, and to show
the taper in the cylinders by the spread of the
auxiliary right-hand pointers I9I and H3.
Left-hand pointers 2H and 2I3 are not used
during this part of the cycle.
The rate at which the platen I3 descends is
determined by the adjustable ori?ce check valve
269. As stated, this orifice check valve allows
free ?ow to the cylinder 9 but restricted flow
from it, thus restricting the speed of descent of
the platen, but not its ascent.
As soon as the
platen I3 starts the descent, the switch L1 leaves
the cam 365 and reopens.
Under the above conditions of descent, the
feeler balls BI are pressed out radially against the
cylinder walls. V2 is closed. When these balls
reach a predetermined point in the engine cylin
ders, known as the sizing point, the platen is
stopped. This sizing point, for example, may be
at a point in a cylinder corresponding to the mid
stroke position of the piston which is later to
operate
therein.
stoppage
is
automatically
effected at the sizing point by tripping of a limit
switch L2 which is operated by a lower cam 2'“
(Figs. 1 and 2). This switch L2 is one of the
sources of initial excitation of relay R2. The cir
cuit connecting L2 and R2 is as follows: One side
335 of line I43, wires 30I, 303, normally shut
switch A, wire 305, relay contacts 309 (when
closed), wires 3I'I, 3I I, 343, normally closed
switch B, wire 345, switch L2, wires 341, 349, coil
of valve V5, wires 3I3, 3I9 and back to the other
side 33‘! of the line I43. It will be noted that
wire 34‘! also feeds the coil 35I of the relay R2
(see wires 341 and 353). This closes relay R2
and causes valve V5 to remain closed even though
the limit switch'L2 reopens.
Normally-open push button switch C is an
other source of excitation for relay R2. When
this switch C is closed, current is fed from side
335 of circuit I43 via wires 30I, 303 to wire 353,
Thus the operator by temporarily openingthe
coil 35I, wires 3I5, 3I3 and 3I9 and back to wire
33'! of line I43. It will be noted that relay R2,
switch A deenergizes and opens contacts 309 of
like relay R2, has a holding-in coil. Relay R2 and
relay R2, which contacts were closed from apre- solenoid valve V5 are normally open. Relay R2
vious cycle of operation. This deenergizes the
energizes solenoid valve V5, thus shutting off the
solenoid valve Viand causes the feeding of‘air
flow of oil from the cylinder 9 to the sump 5.
pressure to the sump 5. This transfers liquid
This stops the downward travel of the platen I3
from the sump 5 to the cylinder 9 via pipe 263
and lifts the platen I3. This drives the trans— 60 and of the transmitters R with the balls BI at
the sizing point. Thus relay R2 and the solenoid
mitters R up into the'engine cylinders but at
V5 cannot be energized on the upward movement
this time the transmitters have no air pressure
of the platen I3 by the tripping of the limit
on them and the balls 8| are therefore not
pressed into engagement with the cylinders.
switch L2, but an operation and holding of push
When the platen I3 has moved to its top posi 65 button switch C will at any time stop either up
ward or downward movement.
tion it stops and then descends, due to the
tripping action on cam 3'35 of the limit switch
It should be understood that the lever II I was
'in the position, during downward travel, as
L1. The switch L1 closes at the top of the travel
thus energizing R3 to close contacts 309 and en
shown in solid lines in Fig. 4. This had the ef
ergizing V1 to shut the latter and vent it, which 70 fect through this non-cooperative position rela
allows throttled return flow of ?uid from cylin
tive to switches L3, L4 and L5 of energizing the
der 9 to sump 5. This allows the transmitters
coil 201 and applying clutch friction to the
to travel down. Relay R3 has been drawn-shut
pointers I9I and I93. At this time In, which is
due to feeding current to its coil 30'! over the
a single-pole double-throw limit switch, closes
wires above described.
75 one-of its contacts which energizes the coil 355
2557715161
13
14
of a time-delay relay R1, getting its source of'
in its dotted-line position, all of the coils’291,
power from relay R3. The wiring is as follows:
side 335 of line I43, wires 39I, 393, closed switch
22'! and 66 are energized. Thus pointers I9l and
I93 remain in their last positions and are not
A, wire 395, closed relay R3, wires 3I'I, 325, 351,
mechanically influenced by the armature pin 299.
359, switch Lo, coil 355, wire 359 back to side 33'!
Under these conditions the pointers 2 I I and 2I3
of line I43. This closes the contacts 36I of relay
are mechanically influenced by the armature pin
R1, which by means of wires 393 from line 335
299 and assume their maximum spread positions
and wire 366 feed the coil 291, the circuit being
due to friction clutching action at 229 and 23I,
closed through wires 36'! and 369 to the other
as caused by energization of coil 22'! (Figs. 15
side 33‘! of the line I43. Limit switches L5 and :10 and 16).
L4 are at this time open. Thus any spread as
The operator performs a stenciling operation,
sumed by the pointers will be maintained due to
to be described, based on the diameter at the siz
ing point. Before performing a stenciling opera
friction at the clutch elements I81, I89 (Fig. 15).
After stopping at the sizing point the operator .
tion he should recognize the taper characteristics
notes the several diameters of the cylinders at 15 because these alone may be grounds for rejecting
this point and also notes the taper in each cyl
a given engine block.
inder, as indicated by the spread of the auxiliary
After taper observations, as obtained from the
vpointers I9I and I93. The latter, remaining
pointers I91, I93, 2H and 2I3, coupled with ob
spread, indicate the maximum taper. The oper
servation of the diameter or diameters at the siz
ator may then accept the engine block. He may 20 ing point, the operator depresses the normally
stencil his acceptance, showing the actual diam
open push button switch D, which energizes the
eters in respect to cylinders in the engine block
several pneumatic hammers 241 (Fig. 17), one
for each cylinder. This stencils the accepted
or any other desirable symbols for the purpose.
mark on the engine block opposite each cylinder
This stenciling operation will be described below. .
Or, he may at this time repeat the above 25 corresponding to the cylinder diameter encoun
tered at the sizing point.
cycle of operations but taking diameter meas
The stenciling operation is accomplished
urement in a plane at 90° from the plane of the
through the actuation by switch D of solenoid
‘measurements in the above-described cycle. This
valves V6 and V7. The valves Va and V7 are
is accomplished with the handle II I set at the
dotted-line position shown in Fig. 4. When han 30 three-way valves which either pass air or vent
it. When the switch D is closed, the requisite
dle III is shifted, bar I99 strikes an operator
circuit is closed from side 335 of line I43 via
bar 42 for switches L3, L4 and L5 (Fig. 4). Thus
in order to obtain a second series of diameter
wires 39I , closed switch D, wire 38I (closed safety
switch 399, to be described below) to valves V6
and V7 in parallel, thence to wire 333 back to
the side 33l of the line I93. It will be recalled
that each stencil motor is constantly following
the action of the respective brush I15, which is
switch Avis again temporarily depressed and
driven in proportion to the action of the respec
opened. The said lifting sequence of the platen
I3 above described is then repeated, except that 40 tive dial I33. This causes constant reposition
ing of the stencil discs I82, with the result that
now the auxiliary pointers 2| I and 2 I3 come into
readings in a plane at 90° from the plane of the
?rst cycle described, the handle III is shifted
from the solid-line position shown in Fig. 4 to the
dotted-line position, as stated. Push button
play, assuming their respective maximum and
minimum positions. This is because the clutch
coil 22'! and the coil 65 are at this time energized.
The switches L4 and L5 have closed to their
dotted-line positions and L3 has moved to its
‘dotted-line position (Fig. 20). The circuit then
reads as follows: starting with the side 335 of the
line I43, wires MI, 393, normally closed switch
A, wire 395, contacts 399 of relay R3 (when
closed), wires 3“, 325. 351, closed switch L4,
wire 313, coil 221. wire 369 and to the other side
33‘! of the line I43. A connection 379 from side
335 of the circuit I43 through closed switch L5
feeds coil 63, which is connected to wire 399
passing to the other side 33‘! of the line I43. Wire
319 also feeds through switch In (now at the
‘dotted-line position) through the coil 355 of the
a proper stencil I39 is always indexed into stencil
ing position. When valves V6 and V7 are opened,
air is admitted to the two balls 253 and. 259 at
the respective pressures of approximately 39
p. s. i. to the ball 253 and 50 p. s. i. to the ball
259. When the pressure above the large ball 253
reaches its full value, the total pressure over the‘
larger area exceeds the total pressure over the
smaller ball 259, although the higher unit pres
sure is applied to the smaller ball 259. Ball 253
then forces back the smaller ball 259 and the
former strikes the hammer 24'! below it and thus ,
the respective punch I89 is driven against the
pan rail 54. When the push button switch- D is
released (opened), the solenoid valves V6 and Vi
are deenergized, thus venting the air pressure
behind the balls. The ball 253 is instantly re
turned to its “cocked” position at the top of the
time-delay relay R1, thus holding the contacts
cylinder by its return spring 255.
of this relay closed. The time delay feature
It will be recalled that now the transmitters R
of relay R1 permits shift of handle I II from one
have their balls at the sizing point and it is neces
position to the other without having the relay
sary not only to withdraw these from the engine
R1 fall open and thus keeps the pointers I9I and
block but it is also desirable to take continued
I93 maintained in their last positions.
When coil 99 is deenergized, its armature pin 65 readings for taper. This will necessitate further
descent of the platen I3 to its lowermost position.
299 is engageable with all of the pointers I9I,
To do this the operator momentarily pushes the
I93, 2H and 2I3. When coil 66 is energized, the
normally closed button switch B. This breaks the
armature pin 299 clears the pointers I9! and I93,
which are left in their last positions, and re
circuit which was above described in connection
mains engageable only with the pointers 2H 70 with relay R2 and deenergizes the latter. This
and 2I3. It will be noted that the pointers 2H
and 2 I3, when handle I I I is in the solid-line posi
tion, do not have their magnetic clutches ener
gized. Therefore they float at zero position with
- the respective dial I33.
When the handle III is ‘7
in turn deenergizes the coil of valve V5. Fluid
then flows from the cylinder 9 to sump 5 via the
throttling check valve 269, and the platen I3
further descends. The pointers I9I, I93 and/or
2“, 2I3 continue to be actuated as above de
2,571,101
15
until the end of the cylinder is reached. Finally,
the balls 8Iof thetransmitters R enter the mas
ter rings 33. This'last action permits’ the op
erator to check the zero reference indications for
the several transmitters R.
In passing out of the engine cylinders into the
table ZI, the balls traverse a small gapwhich in
its effect on balls 8| might spoil the'taper read
ings. This is prevented as follows: By mechani
cally actuating an interruptor switch 383, the
power connection is broken to the inductance
bridge measuring circuit. This causes any dial
I33 to remain in its last position until the circuit
is reconnected. The detail for this is shown in
Fig. 1, wherein a cam 385 contacts the switch arm
381 of switch 383 and forces the switch open, only
at the moment when the balls 8| are traversing
the gap which is shown at G. The switch 383 is
mounted on the underside of the movable platen
I3 while the cam lug is mounted on‘a stationary
part of the bed 3. The switch opening needs only
to be momentary.
Since it is conceivable that someone might op
erate the stencil switch D when no engine block
is in position and cause damage to the stencils
16
'bolized andrecorded on the engine block itself
by operation of the stencil switch D.
In view of the above, it will beseen that the
scribed, giving :readings of .- any, increase in taper,
several objects of the invention are achieved and
other advantageous results attained.
As many changes, could be made in the above
constructions without departing from the scope
of the invention, it is intended that all matter
contained in the above description or shown in
10 the accompanying drawings shall be interpreted
as illustrative and not in a limiting-sense.
I claim:
_
1. A measuring instrument comprising means
for predeterminatelypositioning a- cylinder to be
15 internally measured, a movable-member, a meas
uring transmitter mountedon the movable mem
ber and having pressure-operatedgage members,
means for moving the movable member with the
transmitter to move the gage members of the lat
V20 ter into the cylinder without pressure on the gage
members, means operative automatically at a pre
determined position of the movable-member to
apply pressure to move said gage members into
measuring positions in the cylinder and operative
.25 automatically to retract said movable member
and the transmitter, means for substantially
by unnecessarily hammering them, the following
turning the measuring transmitter relatively to
the movable member and the cylinder, means for
stopping movement of the movable member and
transmitter and for again starting them toward
the cylinder in any turned position of the trans
mitter, and-means for vibrating’ the transmitter
through a limited angle in’ its turning direction
regardless of which of its substantially turned
the switch 389 will be closed. Thus when the en
gine block is not in position and the switch 389 3.5 positions it is in.
2. A measuring instrument comprising an in
opened, the stencil hammers cannot be operated.
spection table, said table having a master-sized
Both the switches 383 and 389 may be of the micro
opening therein, means for predeterminately po
variety in which very little movement of the op
sitioning a cylindric member to be internally
erating button is required to open or close them.
safety feature is provided: A switch 389 is placed
in wire-38I in series with the switch D. This
switch 389 is placed beneath a loose one of the :30
rollers 22, as shown in Figs. 2 and 23. The roller
is normally pushed up from the switch by a spring
39 I, but when loaded by means of the engine block
From the above it will be seen that by means 40 measured substantially coaxially with respect to
the opening, a .movable platen, a measuring
of the push button starting switch A the trans
mitters B may be driven upward through the cyl
inders in the block 27. They may be stopped at
will by operating the stop switch C. ‘Action may
be resumed at will by pressing the resume switch .
B. After reaching the top of the stroke they de
scend automatically. Stenciling is made to oc
cur by pressingr the switch D. These switches are
suitably marked for the given purposes, as indi
cated in Fig. 1.
It will also be seen that the starting operation
causes an initial lift of the transmitters R with
transmitter mounted on the platen and having
pressure-operated gage .members positioned in
said master opening when the platen is in one
position, means for moving. the platen ‘with the
transmitter to move the gage members of the
latter from said opening into the cylindric mem
berwithout pressure onthe gage members, and
means.operativeautomatically at a predeter
‘ mined elevation of the platen to apply pressure
to move said gage members into measuring posi
tions in the cylinder and automatically to cause
retraction of saidplaten and the transmitter.
3. A measuring instrument comprising an in
out a gaging operation, that is, without air pres
sure tending to expand the balls 8| into gaging
contact with the cylinder walls. When the top 55 spection table, said table having master-sized
openings therein, means for predeterminately
of the lift is reached, the downward action starts
positioning a. multi-cylinder member to be in
automatically as stated and at this time the gag
ternally measured with'its cylinders substan
ing balls 8! are automatically pushed into gaging
tially coaxial with the openings, a movable
contact with the cylinder walls for measuring
60 platen, a plurality of measuring transmitters
action during the downward travel. Downward
mounted on the platenand respectively having
action is automatically instigated by the action
pressure-operated gage members positioned re
of switch L1. Operation of the handle or lever
spectively in said master openings when the
II'I allows for a second measuring cycle to be
platen is in one position, means for moving‘the
brought about at 90° to the ?rst. Furthermore, 65 platen with the transmitters to move the gage
during a ?rst cycle taper is indicated by spread
members of the latter from said master openings
between the pointers Fill and I93. During this
into the respective cylinders without pressure on
operation the other pointers 2H and 2I3 follow
the gage members, and means operative auto
the dial without spread. Taper during a second
matically at a predetermined elevation of the
measuring cycle (at 90°) is indicated by spread 70 platen to apply pressure to move said gage mem
of the pointers 2H and 2I3 while the formerly
bers into measuring positions in the cylinders
spread pointers I9I and I93 remain apart. Dur
and to cause retraction of said platen and the
ing either cycle the dial I33 provides a continual
transmitters.
visual indication of the diameters encountered.
4. A measuring instrument comprising an in
7‘ Finally, the diameter at thesizing point is sym 75 spection table,~said table having a master-sized
17
2,671,161
Opening therein, means for predeterminately
positioning on one side of the table substantially
coaxially over the opening a cylindric member
to be internally measured, a movable platen on
the other side of the table, a measuring trans
mitter mounted on the platen and having a pres
sure-operated gage member positioned in said
master opening when the platen is in one posi
tion, means for moving the platen with the
18
to cause retraction of said platen and the trans-1
mitter, a visual indicator responsive to the action
of said gage member adapted continuously to
indicate diameters met with in the cylinder by
said gage member, visual means adapted to in
dicate maximum di?erences in diameters met
by the gage member during a given‘ traverse of
the gage member in the cylinder, a turret, a gang
of punches thereon respectively indexed accorde
transmitter to move the gage member of the
ing to said visual indicator, circuit means con
latter from said opening into the cylindric mem
necting said visual indicator and the turret
adapted to cause movement of the turret pro
portionally to that of the indicator whereby a
ber without pressure on the gage member, means
operative automatically at a predetermined ad
vance of the platen toward the table to apply
pressure to move said gage member into meas
uring positions in the cylinder and automatically
to cause retraction of said platen and the trans
mitter, a visual indicator responsive to the ac
proper punch to make a mark corresponding to
15 an indication is at any moment indexed into a
predetermined marking position, and means for
operating any punch that is in indexed position
to mark the cylindric member.
7. A measuring instrument comprising an in
tion of said gage member adapted continuously
to indicate diameters met with in the cylinder 20 spection table, said table having a master-sized
opening therein, means for predeterminately po
by said gage member, and visual means adapted
sitioning on one side of the table substantially
to indicate maximum differences in diameters
coaxially over the opening a cylindric member
met by the gage member during a given traverse
to be internally measured, a movable platen on
of the gage member in the cylinder.
5. A measuring instrument comprising an in 25 the other side of the table, a measuring trans
mitter mounted on the platen and having a pres
spection table, said table having a master-sized
sure-operated gage member positioned in said
opening therein, means for predeterminately
master opening when the platen is in one posi
positioning on one side of the table substan
tion, means for moving the platen with the trans
tially coaxially over the opening a cylindric
member to be internally measured, a movable 30 mitter to move the gage member of latter from
said opening "l'vinto the cylindric member with
platen on the other side of the table, a measur
out pressure on the gage member, means oper
ing transmitter mounted on the platen and hav
ative automatically at a predetermined advance
ing a pressure-operated gage member positioned
of the platen toward the table to apply pressure
in said master opening when the platen is in
one position, means for moving the platen with 35 to move said gage member into measuring posi
tions in the cylinder and automatically to cause
the transmitter to move the gage member of the
retraction of said platen and the transmitter, a
latter from said opening into the cylindric mem
visual
indicator responsive to the action of said
ber without pressure on the gage member, means
gage member adapted continuously to indicate
operative automatically at a predetermined ad
vance of the platen toward the table to apply 40 diameters met with in the cylinder by said gage
member, visual means adapted to indicate maxi
pressure to move said gage
ember into meas
mum differences in diameters met by the gage
uring positions in the cylinder and automatically
member during a given traverse of the .gage
to cause retraction of said platen and the trans
member in the cylinder, means for rotating the
mitter, a visual indicator responsive to the action
of said gage member adapted continuously to 45 transmitter on the platen for cylinder meas
urement in a 90° plane, additional visual means
indicate diameters met with in the cylinder by
adapted to indicate maximum differences in di
said gage member, visual means adapted to in
ameter, met with by the gage member in said 90°
dicate maximum diiferences in diameters met
plane
but without cancelling the ?rst-named in
by the gage member during a given traverse of
the gage member in the cylinder, means for ro
tating the transmitter on the platen for cylin
der measurement in a 90° plane and additional
visual means adapted to indicate maximum dif
50 dication of diameter differences, a turret, a gang
of punches thereon respectively indexed accord
ing to said visual indicator, circuit means con
necting said visual indicator and the turret
adapted to cause movement of the turret propor
ferences in diameters met with by the gage
tionally
to that of the indicator whereby a proper
member in said 90° plane but without cancelling 55
punch to make a mark corresponding to an indi
the ?rst-named indication of diameter dif
cation is at any moment indexed into a prede
ferences.
termined
marking position, and means for oper
6. A measuring instrument comprising an in
ating any punch that is in indexed position to
spection table, said table having a master-sized
opening therein, means for predeterminately 60 mark the cylindric member.
8. A measuring instrument comprising an in
positioning on one side of the table substantially
spection table, said table having a series of
coaxially over the opening a cylindric member
master-sized openings therein, means for pre
to be internally measured, a movable platen on
determinately positioning a multi-cylinder
the other side of the table, a measuring trans
mitter mounted on the platen and having a pres 65 member to be internally measured with its cylin
sure-operated gage member positioned in said
master opening when the platen is in one posi
tion, means for moving the platen with the
ders respectively substantially coaxial over the
respective openings, a movable platen, elongate
measurement transmitters mounted on the
platen and having pressure-operated gage mem
bers respectively positioned in said master open
ter from said opening into the cylindric member
ings when the platen is in a retracted position,
without pressure on the gage member, means op
one means for advancing the platen with all of
erative automatically at a predetermined ad
the transmitters simultaneously to move the gage
vance of the platen toward the table to apply
members of the latter from said openings into
pressure to move said gage member into meas
uring positions in the cylinder and automatically 75 the cylinders without pressure on the gage mem
transmitter to move the gage member of the lat
>
e 19‘
20v
mitters on the platen to 90° positions, and means"
for vibrating said common rotating means less‘
than 90° in either 90° position.
11. A measuring instrument comprising an' in
spection table, said table having a series of
master-sized openings therein, means for pre
determinately positioning a multi-cylinder mem
ber to be internally measured with its cylinders
respectively substantially coaxial over the re
bers, means operative automatically at a prede
termined advance of the platen to apply pressure
to move all of said gage members into measuring
positions in the cylinders and to cause retraction
of said platen and the transmitters, individual
indicators responsive respectively to the re
spective actions of said gage members in the
cylinders and being each adapted continuously
to indicate an individual diameter met with in a
cylinder by one of said gage members, and in 10 spective openings, a movable platen, elongate
measurement transmitters mounted on the plat
dividual visual means adapted to indicate maxi
en and having pressure-operated gage members
mum differences in diameters respectively met
respectively positioned in said master openings
with by the gage members during a given traverse
When the platen is in a retracted position, one
of the respective gage member in a cylinder.
9. A measuring instrument comprising an in 15' means for advancing the platen with all of the
transmitters simultaneously to move the gage
spection table, said table having a series of
members of the latter from said openings into
master-sized openings therein, means for pre
determinately positioning a multi-cylinder mem
the cylinders without pressure on the gage mem
bers, means operative automatically at a prede
ber to be internally measured with its cylinders
respectively substantially coaxial over the re 20 termined advance of the platen to apply pres
spective openings, a movable platen, elongate
sure to move all of said gage members into
measuring positions in the cylinders and to cause
measurement transmitters mounted on the
platen and having pressure-operated gage mem
retraction of said platen and the transmitters,
bers respectively positioned in said master open
ings when the platen is in a retracted position,
individual indicators responsive respectively to
‘ the respective actions of said gage members in
one means for advancing the platen with all of
the transmitters simultaneously to move the gage
members of the latter from said openings into
the cylinders without pressure on the gage mem
bers, means operative automatically at a prede
termined advance of the platen to apply pres
the cylinders and being each adapted continu
ously‘ to indicate an individual diameter met
with in a cylinder by one of said gage members,
individual visual means adapted to indicate
30 maximum differences in diameters respectively
sure to move all of said gage members into meas
met with by the gage members during a given
traverse of the respective gage member in a cyl
uring positions in the cylinders and to cause re
inder, common means for rotating all transmit
traction of said platen and the transmitters, in
ters on the platen to 90° positions, and addi
tional individual’ indicating means adapted to
indicate maximum differences in diameters re
spectively met with by the gage members in
dividual indicators responsive respectively to the .
respective actions of said gage members in the
cylinders and being each adapted continuously
to indicate an individual diameter met with in
another traverse when’ the transmitters are ro
a cylinder by one of said gage members, in
tated 90°, without cancelling the indications of
dividual visual means adapted to indicate maxi 40 the ?rst mentioned indications of maximum
mum di?erences in diameters respectively met
' differences.
0
with by the gage members during a given
12. A measuring instrument comprising an in
traverse of the respective gage member in a
spection table, said table having a series of
cylinder, and common means for rotating all
master-sized openings therein, means for pre
transmitters on the platen to 90° positions.
determinately positioning a multi-cylinder mem
10. A measuring instrument comprising an in 45 ber to be‘ internally measured with its cylinders
spection table, said table having a series of
respectively substantially coaxial over the re
master-sized openings therein, means for pre
spective openings, a movable platen, elongate
determinately positioning a multi-cylinder mem
measurement transmitters mounted on the plat
ber to be internally measured with its cylinders
en and having pressure-operated gage members
respectively substantially coaxial over the re
respectively positioned in said master openings
spective openings, a movable platen, elongate
when the platen' is in a retracted position, one
measurement transmitters mounted on the
means for‘advancing the platen with all of the
platen and having pressure-operated gage mem
transmitters simultaneously to move the gage
bers respectively positioned in said master open
members of the latter from said openings into
ings when the platen is in a retracted position,
the cylinders without pressure’ on the gage mem
one means for advancing the platen with all
bers, means operative automatically at a pre
of the transmitters simultaneously to move the
determined advance of the platen to apply pres
gage members of the latter from said openings
surev to move all of said gage‘ members into
into the cylinders without pressure on the gage
measuring positions in the cylinders and to cause
members, means operative automatically at a
retraction of said platen and the transmitters,
predetermined advance of the platen to apply
pressure to move all of said gage members into
individual indicators responsive respectively to
the respective actions of said gage members in
measuring positions in the cylinders and to cause
the cylinders and being each adapted continu
retraction of said platen and the transmitters, 65 ously 'to indicate an individual diameter met
individual indicators responsive respectively to
with in a cylinder by one of said gage members,
the respective actions of said gage members in
individual visual means adapted to indicate max
imum differences in diameters respectively met
the cylinders and being each adapted continu
with by the gage members during a given trav
ously to indicate an individual diameter met
with in a cylinder by one of said gage members, 70 erse of the respective gage member in a cylinder,
common means for rotating all transmitters on
individual visual means adapted. to indicate
the platen to 90° positions, additional individual
maximum differences in diameters respectively
indicating means adapted to indicate maximum
met with by the gage members during a given
traverse of the respective gage member in a cyl
differences in diameters respectively met with
inder, common means for rotating all trans
by the gage members in another traverse ‘when