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Патент USA US2263721

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Nov. 25, 1941.
A. c. DE LORME
2,263,721
MATERIAL HANDLING APPARATUS
Filed Dec. 30, 1938
‘
2 Sheets-Sheet l
'
a'rarr
ssou
/
INVENTOR
BY
AC. DE LORME
ATTORNEY
,
NOV. 25, 1941.
A_ Q [)5 LQRME
2,263,721
MATERIAL HANDLING APPARATUS
Filed Dec. so, 1938
2 Sheets-Sheet 2
/6/
/62
WNW!
'73 '74
INVENTOR
A.
DE LORME
A TTOR/VE'Y
Patented Nov. 25, 1941
2,263,721
UNITED STATES PATENT OFFICE
2,263,721
HANDLING APPARATUS
Alfred C. De Lorme, Maplewood, N. 1., minor to '
Western Electric Company, Incorporated, New
York, N. Y., a corporation of New York
Application December so, 1938, Serial No. 248,438
16 Claims. (01. 271-25)
This invention relates to material handling
apparatus, and more particularly to an apparatus
for feeding stock to a material working machine.
The output of numerous material working ma
chines, such as forming machines, various kinds
of presses, etc., is frequently dependent upon the
means provided to feed stock to the machines.
to show nor describe in detail the minute struc
tures of such machines. The important factor
to be considered is the advancement of material
20 to the machine during each cycle of operation
of the cross head IS.
The embodiment of the apparatus shown in
Figs. 1 and 2 feeding the material to the ma
If the stock can be fed with accuracy to such ma
chine consists of a support 2! formed with an
chines between the intervals of operation on the
upper surface grooved longitudinally at 24 for
stock at greater speeds the machines may also 10 the reception of a tongue portion 25 of a slide
operate at greater speeds, producing ‘more parts
or material feeding element 23. The element 23
in a given time and reducing the cost of produc
is made hollow, at 28, for the passage of the
ing such parts.
.
material 20 therethrough and in the forward
An object of the invention is to provide a
portion of the passageway a gripping member 30
simple, efficient and practical apparatus operable 15 is disposed. The’ form of the gripping member
in synchronism with a material working machine
may vary, depending upon the shape of the ma
to feed material thereto.
terial being advanced. In the present embodi
With this and other objects in view, one em
ment the material is in the form of a ?at ribbon.
bodiment of the invention comprises a recipro
Therefore, the gripping member has a ?at upper
cable slide element movable toward and away 20 surface cooperating with a ?at surface of the
from a material working machine and operatively
element 23 to grip the material when the grip
associated therewith to feed predetermined
ping member is moved upwardly. Means for
lengths of stock to the machine, the ‘stock being
secured to the element during the feeding move
ment thereof and held against movement during
the return movement of the element.
Other objects and advantages will be apparent
from the following detailed description when
taken in conjunction with the accompanying
drawings, wherein
Fig. 1 is a front elevational view of one. em
bodiment of the invention shown in combination
with one type of material working machine;
Fig. 2 is an enlarged fragmentary elevational
actuating the gripping member consists of a
lever 3i pivoted at 32 to the element and ex
tending through an inverted U-shaped yoke 33,
the ends of the yoke being ?xed to the gripping
member while the sides thereof are slidable ver
tically between guideways 34. The free end of
the lever 3! is operatively connected, at 35, to a
solenoid core 36, the latter being actuable
through the control of a solenoid 31.
Electrically operated means in the form of
solenoids l0 and 4| have their cores 42 and 43,
respectively, directly connected to the element 23
view, partially in section, of the embodiment of
through rods 43 to cause respective movement
the invention shown in Fig. 1;
of the element toward and away from the ma
_ ,
Fig. 3 is a diagram illustrating the sequence
chine. The solenoids " and 4| are mounted
of operation of the apparatus and the machine;
upon the ends of the support 2|. Adjustable set
Fig. 4 is a front elevational view of another
screws 45 and 46 mounted in vertical portions of
embodiment of the invention; and
40 the support 2| vary the distance of movement
Fig. 5 is an enlarged fragmentary front ele
of the element toward or away from the machine
vational view of the embodiment shown in Fig. 4.
and vary the total distance that‘the element may
Referring now to the drawings, attention is
be moved.
directed first to Figs. 1 to 3 inclusive, wherein
Electrically controlled means is also provided
the apparatus is shown in combination with one 45 to hold the material against movement when it
type of material working machine, namely a
has been advanced, thus holding it against dis
punch press. The punch press shown in Fig. 1
placement during operation on the material by
may be of the conventional type having a base It
the machine and during the return of the feeding
supporting an anvil and die (not shown). Up
element 23. This means consists of a gripping
right portions II and I2 supported by the base 50 member 48 similar in contour to the gripping
have bearings at their upper ends for rotatably
member 30, with the ?at upper surface associ
supporting‘ a crank l3. ,Connected to the crank
ated with a flat surface 49 of the support 2| to
is a connecting rod ll to cause reciprocation of
grip the material 20 therebetween. The grip;
a cross head I5 relative to the die during rota
ping member 48 also has an inverted substan
tion of the crank. It is not believed necessary
tially U-shaped portion 50 integral therewith and
2
9,203,721
slidable in guideways 5| of the support ii. A
55 remains closed until after completion of the
central vertically extending portion 53 of the
portion 5| is connected to a core 54 of a sole
noid 55. The solenoids 31, 4|, 4| and 55 for con
trolling the operation of the apparatus are ener
cycle of operation, that is, until the cross head
completes its downward stroke and has passed a
suilicient distance upwardly to free the material.
Shortly after the closing of the circuit to the
gized in predetermined timed relation with the
operation of the machine through a plurality of
switches indicated generally at 50 and mounted
for rotation upon or with the crank I3. The
to hold it against movement, the circuit to- the
solenoid 31, through the leads 'II and ‘I2, the
contacts ‘I3 and ‘I4, the brushes ‘I5 and ‘I6, and
solenoid 55 to cause a gripping of the material
switches 5|! are shown in pairs, three pairs of 10 the leads TI and ‘I8, is opened, allowing the grip
ping member 30, the lever 3| and the core 36 to
which are illustrated in the present embodiment,
move downwardly by gravity, freeing the material
and alternate switches of each pair are elec
therefrom and conditioning the element for its
trically connected to the leads SI and 52 of a
return movement to the right. Shortly after
main circuit to supply electrical energy to the
the opening of the circuit to the solenoid 31,
solenoids. Brushes 64 are positioned in suitable
as indicated in Fig. 3, the circuit to the solenoid
stationary supports to engage the switch seg
4i, through the leads 65 and 66, their respective
ments on the crank during rotation thereof.
brushes, and the associated switches, is closed to
Solenoids 40 and H control the movement of the
energize the solenoid and cause movement of the
element and as these solenoids will be energized
for equal intervals of time they are, in the pres 20 element 23 to the right, which movement is~
limited by the position of the set screw 46, thus
ent embodiment, controlled through the same
positioning the element to again grip the mate
set of sequence switches. It will, therefore, be
rial to feed another length thereof to the ma
observed by viewing Fig. 1, that lead wires 55
chine. As illustrated in Fig. 3, the circuit to the
and 55 extend from the solenoid II to the top
solenoid 4| remains closed for the greater portion
pair of brushes positioned to engage the ?rst
of the downward travelof‘the cross head I5 and
pair (from the right) of switches. Lead wires 61
just prior to the completion‘uof its downward
and 68 extend from the solenoid 40 to the lower
pair of brushes positioned to engage this pair
movement the circuit to the solenoid 4| is opened'." '
of switches. Lead wires 69 and ‘Ill extend from
the solenoid 55 to the ?rst set of brushes (from
the left) to electrically engage the adjacent pair
of brushes.
Lead wires ‘II and ‘I2 extend from the center
pair of brushes to contact strips ‘I3 and ‘I4, re
Immediately following the opening of the circuit
to the solenoid 4|, the circuit to the solenoid 31
is closed, causing the gripping member 30 to again
spectively, carried by the support 2| and posi
tioned to be engaged by brushes ‘I5 and ‘I6, re
spectively, carried by the element 23. Leads TI
and ‘I8 connect the brushes ‘I5 and 16, respec
tively, to the solenoid 31. The contact strips ‘I3
grip the material to condition the element 23 ‘to
again advance a predetermined length of the
material to the machine. This completes one
cycle of operation of the apparatus and the ma
chine. It is apparent that the apparatus may be
readily and accurately adjusted through the ad
justment of the set screws 45 and 46 to vary the
amount of the material fed to the machine. It
and ‘I4 and the brushes ‘I5 and ‘I6 are merely 40 will be further understood that the connection
of the switches for operation directly with the
schematic illustrations of how the circuit for
the solenoid 31 may be completed and other suit
able means may be provided if so desired.
Upon considering the operation of the embodi
ment of the invention illustrated in Figs. 1 and 2,
attention is ?rst directed to Fig. 3 which indi
cates, by a circle, the cycle of rotation of the ma
chine and, of course, the cycle of rotation of the
crank and the portion thereof‘ carrying the
switches 60. ,After the cross head I5 of the ma
chine has completed its operation upon the ma
terial and moved a sufficient distance to be free of
the material the switches controlling the circuit
through the leads 59 and ‘III to the solenoid 55
crank, or the operating shaft of the machine,
makes possible the operation of the machine at
variable speeds or at greatly increased speeds
without the necessity of adjusting the apparatus,
and regardless of the speed of operation of the
machine the apparatus will accurately feed de
sired variable lengths of material to the machine.
The embodiment of the invention shown in
Figs. 4 and 5 illustrates an apparatus for accom
plishing the same result and, for the purpose of
illustration, is associated with the same type of
material working machine. As the machine
shown in Fig. 4 is the same as that shown in
are moved free of their brushes to open the cir 55 Fig. 1, it is not believed necessary to repeat the
description thereof, as the application of the
cuit to deenergize the solenoid and allow the
same reference numerals to the drawings of both
gripping member 48 to drop by gravity, freeing
machines and the application of the same de
its grip on the material. Shortly after this oc
scriptive matter to both machines is believed
curs, as is indicated in Fig. 3, the switches con
trolling the circuit to the solenoid 40 will com 60 su?icient. This embodiment of the apparatus
consists of a support I2I substantially identical
plete a circuit through the leads 67 and 68 and
in structure to the support 2| in Figs. 1 and 2,
the brushes associated therewith to energize the
slidably supporting a material feeding element
solenoid, and as a result thereof cause movement
I23 through an associated groove I24 and tongue
to the left of the element 23 advancing the mate
rial a predetermined distance limited by the set 65 I25, to allow movement of the element relative
to the support toward and away from the ma
screw 45. The circuit to the solenoid 40 remains
chine. A gripping member I30 disposed in a
closed until the crank approaches the top of its
passageway I28 of the element I23, has an in
cycle, as indicated in Fig. 3, at which time the cir
verted U-shaped yoke I33 slidable in guideways
cuit is opened. Immediately following the open
ing of the circuit to the solenoid 40 the circuit 70 I34 and resting upon a lever I3I. The lever I3I
is pivoted, at I32, and has its free end operatively
to the stationary gripping means, namely the
connected at I35 to a solenoid core I36, the latter
gripping member 48 and its solenoid 55, is com
being actuable through the control of a solenoid
pleted, energizing the solenoid and causing a
I3'I.
gripping of the material between the member 48
and the surface 43. This circuit to the solenoid 75 Disposed in vertical portions at each end of the
2,288,721
support I2I are adjustable set screws I45 and I45,
their purpose being to serve as stops for the
element I23 and to control the distance of move
ment of the element which may be varied by
varying‘ the distance between the heads ofthe
set screwsand by other means hereinafter de
scribed. A stationary gripping member I48, slid
3
netic ?elds to be set up in the rotor circuit of
the receiver which produce a torque in the last
mentioned circuit to again establish equilibrium.
As electrical units of-this type are well known
commercially it is not believed necessary to fur
ther illustrate or to delve further into their
‘structure.
ably mounted in one of the vertical portions of
Due to the fact that the transmitter is directly
the support .and cooperating with a stationary
by the crank I3 and is variable in speed
surface I49 thereof, has an integral yoke I50 10 driven
with the crank, should any variation in speed
slidable in guideways -I5I and connected, at I53,
to a core I54 of a solenoid I55.
exist, the receiver I94 will operate in synchro
nism with the crank. The receiver I94 drives
The mechanism thus far described in this em
a gear I91, which in turn drives a gear I90. Both
bodiment of the invention is identical to that
the bearing for the shaft supporting the gear
shown in Figs. 1 ‘and 2 and in av like manner 15 I98 and the base of the receiver I94 are mounted
the solenoids I31 and I55 are controlled through
upon the'support I2I. A connecting pin 200,
switches, indicated generally at I60, mounted
mounted
upon an internally threaded block MI
upon or rotatable with the crank I3. ‘As illus
and slidable in guideways 202 mounted upon the
trated in Fig. 4, the switches are in pairs and the
gear I98, is adjustable relative to the axis of
switches of each pair are connected one to a lead 20 the gear by an adjusting screw 203, threadedly
I6I and the other to a lead I62 of a main circuit,
extending through the block and held against
to supply- electrical energy to the solenoids.
longitudinal movement to vary the distance of
Brushes I64 are positioned in suitable stationary ‘
movement of the element I23, as will‘herein
supports to engage their respective switches I60
after'be described.
to complete circuits to the solenoids at desired '
The connecting pin 200 supports one end of
intervals during rotation of the crank. .Leads
a link 205, the other end being connected to a
I69 and I10 connect the inner set of brushes I64
rocker arm 206 pivotally supported by a suitable
to the solenoid I55. Leads "I and I12 connect
bracket at 201. Also supported at position 201
the outer set of brushes I64 to contact strips I13
for movement about the same axis as that of the
and I14, respectively, which have associated 30 rocker arm is a lever 208 extending downwardly
brushes I15 and I16, respectively, movable with
between spaced lugs 209 integral with the rocker
the element and respectively connected to the
arm, the purpose of ‘the lugs being to limit the
leads I11 and I18 which complete the circuit to
movement of the lever relative to the rocker
the’ solenoid I31.
'arm. A link 2I0 operatively connects the lower
The gripping members I30 and I48 are actu
end of the lever 208 to the element I23.
_
ated and controlled in the same manner as the
Referring now to the operation of this em
gripping members 30 and 48 are controlled. The
bodiment of the invention, a similar cycle of
difference in construction between the two em- ~
operation takes place, particularly for the ener
bodiments of the invention therefor lies in the
gization of the solenoids I31 and I55, as that
means for imparting movement to the material 40 illustrated in Fig. 3. The operation of the trans
moving elements, Broadly, the mechanism for
mitter I90 and the receiver I94 are continuous.
controlling the movement of the element I23
yet due to the dwell in operation at the end of
consists of an electrical transmitter I90 having
each half cycle created by the relative movement
a ?eld circuit supplied with'a suitable source of ‘
electrical energy through lines I9I and directly
connected to the crank\ I3 through gears I92 and
I93, an electrical receiver I94 being controlled
by the transmitter and operatively associated with
of the rocker arm 206 and the lever 208 like move
r ments are imparted to the element I 23 as are
imparted to the element 23 through the ener
gization of the solenoids 40 and H .
By viewing Figs. 3 and 4 it will be observed
means to cause reciprocable movement of the
that the element I23 is at a position approaching
element. The electrical transmitter I90 and re 50 the set screw I45 or its forward feeding position
ceiver I94 may be electrical units of any suitable
advancing the material 20 to the machine. This
type wherein one is ‘mechanically actuated and
movement of the element is caused by energiza
conditioned to'cause like actuation of the other
through remote control. One type of unit suit
tion of the receiver controlled by the transmitter
to rotate the gear I99 clockwise, causing move
able for this purpose is commercially known as 55 ment to the left of link 205 and clockwise move
a Selsyn motor. With the use of two motors of
ment of the rocker arm 206 to impart ‘a like
this type, one mechanically driven by the crank
movement to the lever 208 through the engaging
I3 and the other positioned to actuate the ele
lug 209. In this manner the element I23 is
ment I23, the element may be moved in timed
moved to the left through the link 2I0. This
relation with the cross head I5 to feed the ma 60 movement is continued until the connecting pin
terial at de?nite intervals to the machine. In
200 passes beyond dead center. When the con
this embodiment of the invention the field cir
necting pin reaches dead center the solenoid I55
cuits of both the ‘transmitter I 90 and the re
is energized and immediately thereafter the sole
ceiver are connected electrically to the same
noid I 31 is deenergized, freeing the gripping
supply lines I 9I . The three~phase winding of 65 member I30 from the material and causing the
each rotor circuit of the transmitter and receiver
gripping member I48 to hold the material against
are so connected, through conductors I95, that
movement during the return of the element and
the rotor circuit of the receiver is constantly
operation on the material. The dwell in the
active to balance any induced voltage created
movement ‘of the element which takes place from
by the rotor circuit of the transmitter and cre 70 the time the connecting pin 200 reaches dead
ate a state of equilibrium. It will, therefore, be
center and until it moves a sufficient distance
understood that, as the rotor circuit of the trans
to move the rocker arm 206 to move the lug 209,
mitter I90 is rotated by the crank, the induced
at the left, into engagement with the lever 208,
voltage in the windings will change, disturbing
and thus begin movement of the element to the
the state of equilibrium, causing opposing mag 75 right. This movement of the element to the right
4
2,283,721
continues until the connecting pin :00 reaches
each cycle of operation of the machine, of a
material feeding element, a transmitting unit
actuated by the member and variable with varia
tions in the speed of movement of the member
to transmit varying electrical forces, a receiving
unit operatively connected to the element and
dead center at the right of its axis, at which
time the solenoid I3] is energized, and imme
diately thereafter the solenoid I55 is deenergized,
conditioning the, apparatus for a movement to‘
the left to advance another length of material
2|! to the machine.
'
.
‘The length ‘of the material advanced to the
machine may be varied by varying the distance
of movement of the element. This is brought
’
I controlled by the electrical forces from the trans
mitting unit to cause actuation of the ‘element
in timed relation with the machine to feed ma
terial thereto, and means to vary the distance
about by varying the positions of the set screws
I45 and I46 from each other and by varying
the position of the connecting pin 200 relative
to the axis of the gear I98 through the adjust
of movement of the element to vary the amount a
of material fed to the machine.
5. The combination with a material working
machine including a member movable during each
cycle of operation of the machine, of a material
feeding element, a transmitting unit actuated by
the member and variable with variations in the
ment of the screw 203.
In both embodiments of the invention variable
lengths of the material may be fed to the ma
chine by an element controlled directly by the
machine and in this manner may operate at vari
able speeds with variations in the speeds of oper
ation of the machine.
The embodiments of the invention herein dis
closed are illustrative only and may be widely
modified and departed from in many ways with
‘speed of movement- of the member to transmit
varying electrical forces, and a receiving unit
operatively connected to the element and con
trolled by the electrical forces from the trans
mitting unit to cause actuation of_the element
in timed relation with the machine to feed ma
out departing from the spirit and scope of the
invention as p0inted out in and limited only by
the appended claims.
terial thereto, and at intermittent intervals.
conditioned when energized to respectively move
ment of the element toward the machine.
6. The combination with a material working
machine including a member movable during
' What is claimed is:
each cycle of operation of the machine, of a ma
1. The combination with a material working
terial feeding element, an electrical energy trans
machine including a member movable during 30 mitting unit actuated by the member,‘ an elec
trical energy receiving unit operatively connected
each cycle of operation of the machine, of a
material feeding element movable toward-and
to the element and controlled by the transmitting
away from the machine, a gripping element to
unit to cause actuation of the element in timed
secure material to the material feeding element,
relation with the machine to feed material there
an electrical unit conditioned when energized to 35 to, and means controlled by the member to se
actuate the gripping element, electrical units
cure the material to the element during move
the feeding element toward and away from the
machine, and electrical circuits for the units con
trolled by the member to cause energization of
the units in predetermined sequence during each
cycle of operation of the machine to feed the
material thereto.
2. The combination with a material working
machine including a member movable during
each cycle of operation of the machine, of a ma
terial feeding element movable toward and away
from the machine, a gripping element to secure
material to the material feeding element, a sta
tionary gripping element to hold the material
against movement, electrical units conditioned
when energized to actuate the gripping elements,
respectively, electrical units conditioned when
energized to respectively move the feeding ele
ment toward and away from the machine, and
electrical circuits for the units controlled by the
member to cause energization of the units in pre
determined sequence during each cycle of opera
tion of the machine to feed the material thereto
and to hold the material against movement dur
ing movement of the feeding element away from
the machine.
3. The combination with a material working
machine including a member movable during
each cycle of operation of the machine, of a
material feeding element, a transmitting unit
actuated by the member and variable with var
iations in the speed of movement of the member
to transmit varying electrical forces, and a re
ceiving unit operatively connected to the element
and controlled by the electrical forces from the
transmitting unit to cause actuation of the ele
ment in timed relation with the machine to feed
material thereto.
4. The combination with a material working
,
machine including a member movable during 7
7. The combination with a material working,
machine including a_member movable during
Mv
each cycle of operation of the machine, of a
material feeding element, a transmitting unit
actuated by the member and variable with var
iations in the speed of movement of the mem
ber to transmit varying electrical forces, a re
ceiving unit operatively connected to the element
and controlled by the electrical forces from the
transmitting unit to cause actuation of the ele
ment in timed relation with the machine to feed
material thereto, and means controlled by the
member to hold the material against movement.
8. The combination with a material working
machine including a member movable during
each cycle of operation of the machine, of a car
riage mounted for reciprocal movement toward
and away from the machine, electrically oper
ated means controlled by the member to cause
reciprocal movement of the carriage, an actua
ble material gripping element movable with the
carriage, an electrical unit for actuating the
gripping element, means controlled by the mem
ber to cause energization of the electrical unit
during certain intervals of movement of the car
riage to advance material to the machine be
tween each cycle of operation thereof, and means
to vary the extent of movement of the carriage
to vary the amount of material advanced to the
machine.
9. The combination with a material working
machine including a member movable during
70 each cycle of operation of the machine, of a
carriage mounted for reciprocal movement to
ward and away from the machine, a transmit
ting unit rotated by the member at variable
speeds with variations in the speed of move
ment of the member to transmit varying elec~
2,268,721
trical forces, a receiving unit caused to ro
tate by the said electrical forces and at like
speeds with the transmitting unit, and means
operatively connecting the receiving unit to the
5
noid operatively connected to the holding ele
ment, and’means controlled by the member to
carriage to cause movement of the latter by the
cause energization of the last mentioned sole
noid to cause actuation of the holding element
to hold the material against movement dur
former.
ing the return movement of the carriage. ‘
V
‘
10. The combination with a material working
14. The combination with a material working
machine including a member movable during
machine including a member movable during
each cycle of operation of the machine, of a
each cycle of operation of the machine, of a
carriage mounted for reciprocal movement to 10 carriage mounted for reciprocal feeding and re
turn movements toward and away from the ma
ward and away from the machine, a transmit
ting unit rotated by the member at variable
chine, electrically operated means controlled by
speeds with variations in the speed of movement
the member to cause reciprocal movements of
of the member to transmit varying electrical
the carriage toward and away from the ma
forces, a‘ receiving unit caused to rotate by the 15 chine and allqw rest intervals between each
said electrical forces and at like speeds with
movement of the carriage, a solenoid movable
the transmitting unit, means operatively con
with the carriage, an actuable gripping element
necting the receiving unit to the carriage to
movable with the carriage and operatively con
cause movement of the carriage toward and away
nected to the solenoid, means controlled by the
from the machine, and means to cause a ma
terial to move with the carriage toward the ma
20 member to cause energization of the solenoid to
actuate the gripping element to feed the mate
rial to the machine between each cycle of oper
11. The combination with a material working
ation thereof, an actuable holding element, a
solenoid operatively connected to the holding
machine including a member movable during
each cycle of operation of the machine, of a 25 element, and means controlled by the member
carriage mounted for reciprocal movement to
to cause energization of the last mentioned sole
noid to cause actuation of the holding element
ward and away from the machine, a transmit
to hold the material against movement during
ting unit rotated by the member at variable
the return movement of the carriage.
speeds with variations in the speed of move
15. The combination with a material working
ment of the member to transmit varying elec 30
machine including a member supporting switches
trical forces, a receiving unit caused to rotateby
and movable during each cycle of operation of
the said electrical forces and at like speeds with
the machine, of a carriage mounted for recipro
the transmitting unit, means operatively con
necting the receiving unit to the carriage to
cal feeding and return movements toward and
cause movement of the carriage toward and away 35 away from the machine, electrical units to re
spectively move the carriage toward and away
a from the machine, and electromagnetic means
from the machine when energized, an electrical
controlled by the member to hold a material for
unit, when energized, to cause movement of a
movement with the carriage toward the ma
material with the carriage toward the machine,
chine.
12. The combination with a material working 40 and electrical circuits for the units controlled by
the switches tov cause energization of the units
machine including a member movable during each
cycle of operation of the machine, of a carriage ' in predetermined sequence during each cycle of
operation of the machine to reciprocate the car
mounted for reciprocal movement toward and
riage and cause feeding of the material to the
away from the machine, a transmitting unit ro
tated by the member at variable speeds with vari 45 machine between the operating cycles of the
machine.
ations in the speed of movement of the member
16. The combination with a material working
to transmit varying electrical forces, a receiv
machine including a member supporting switches
ing unit caused to rotate by the said electrical
and movable during each cycleof operation of
forces and at like speeds with the transmitting
unit, and means operatively connecting the re 50 the machine, of a carriage mounted for recipro- .
cal feedingand return movements toward and
ceiving unit to the carriage to cause movement
away from the machine, electrical units to re
of the carriage toward and away from the ma
spectively move the carriage toward and away
chine and allow rest intervals between each
from the machine when energized, an electrical
interval of movement of the carriage.
unit, when energized, to cause movement of a
13. The combination with a material working
material with the carriage toward the machine,
machine including a member movable during
an electrical unit, when energized, to cause hold
each cycle of operation of the machine, of a
ing of the material against movement, and elec
carriage mounted for reciprocal feeding and re
trical circuits for the units controlled by the
turn movements toward and away from the ma
chine, electrically operated means controlled by 60 switches to cause energization of the units in
predetermined sequence during each cycle of
the member to cause reciprocal movement of
operation of the machine to move the carriage
the carriage, a solenoid movable with the car
toward the machine, to cause the material to
riage, an actuable gripping element movable
move with the carriage toward the machine, to
with the carriage and operatively connected to
the solenoid, means controlled by the member to 65 cause return movement of the carriage away
from the machine free of the material and cause
cause energization of the solenoid to actuate
holding of the material against movement dur
the gripping element- to feed the material to
ing the return movement of the carriage.
the machine between each cycle of operation
ALFRED C. DE DORME.
thereof, an actuable holding element, a sole
chine.
‘
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