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April 29, 1947.
\H. c. SATTERTHWAITE
2,419,660
HONE
Filed Jan. 17, 1945
2 Sheets-Sheet 1
INVENTOR.
_ April 29, 19477.
2,419,660 .
H. C. SATTERTHWAITE
HONE
Filed Jan. 17, 1945
2 Sheets-Sheet 2
.liuIv?l
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nu
‘.T§
. ‘ .
I .
l/Io.IEVIA
2,419,650
Patented Apr. 29, 1947
UNITED STATES PATENT OFFICE
2,419,660
HONE
Harry G. Satterthwaite, Detroit, Mich.
Application January 17?, 1945, Serial No. 573,149
13 Claims. (01. 51-4843)
1
2
.
This invention relates to hones employed for
removing material by an abrading action from
the surfaces of cylindrical bores.
Objects of the invention include the provision
The present invention particularly relates to that
class of hones adapted for operating upon rela
provision of a hone including a novel form of
connection between the abrading elements and
and particularly when not operatively engaged in
tively small bores, and for this reason it is not
possible to include the relatively intricate mecha
nism that it is possible to employin hones de
of a novel form of hone including a tapered
signed to operate upon relatively large bores as,
mandrel and abrading elements mounted there
for instance, the bores of engine cylinders or the
on, the abrading elements being shiftable lon
like. Hones of the type to which the present in
gitudinally with respect to the mandrel so as to
vention is related must therefore be relatively
vary the effective diameter of the hone, and in
which a novel form of connection is provided be 10 simple in construction, but at the same time, in
order to be commercial they must be constructed
tween the vmandrel and the abrading element
to e?iciently operate with a minimum of trouble.
serving to maintain the abrading elements in
One of the main problems in connection with
position under the effects of centrifugal force
the type of hone herein under consideration is
during operation; the provision of a hone hav
ing a novel form of mechanism for effecting rel 15 the means employed for holding the abrading
elements to the mandrel so that they will'not be-v
ative movement between the abrading elements
come disconnected during rotation of the hone,
and the mandrel longitudinally of the latter; the
a bore to be finished thereby.
The hone of the
means directly connected thereto for imparting 20 present invention has been particularly designed
with this feature in mind, as well as to provide
relative longitudinal movement between the
a simple and economical means and mechanism
abrading elements and the supporting mandrel;
for adjusting the hone to compensate for wear
and the provision of a novel form of abrading
of the abrading elements thereof.
element for a hone of the character described.
Referring now to the accompanying drawings,
The above being among the objects of the pres 25
and
particularly to the construction illustrated
ent invention, the same consists in certain novel
in Figs. 1 to 8 inclusive, it will be noted that the
features of construction and combinations of
hone in question comprises a mandrel indicated
parts to be hereinafter described with reference
generally at In having a generally cylindrical rear
to the accompanying drawings, and then claimed,
end
portion l2 and an outer or forward, tapered
having the above and other objects in view.
30
portion indicated generally at l4. Preferably the
In the accompanying drawings, which illus
mandrel I0 is formed from a cylindrical piece of
trate suitable embodiments of the present inven
stock and the end portion l4 formed by ma
tion and in which like numerals refer to like parts
chining away opposite sides thereof to provide
throughout the several different views,
of oppositely disposed, fiat faces l6 which,
Fig. 1 is a fragmentary, partially broken, par 35 aaspair
perhaps best brought out in Fig. 4, in section,
tially side elevational View of honing apparatus
are arranged in parallel chordlike relation, and
embodying the present invention; 7
each extends from one side of the mandrel to
Fig. 2 is an enlarged, partially broken, par
but short of the opposite side thereof where it
tially sectioned, side elevational view of the hone
is bounded by an outwardly eXtending wall [8
40
shown in Fig. 1;
which extends out through the otherwise cylin
Fig. 3 is an end elevational view of the hone
drical surface of the mandrel. Each face I6 is,
shown in the preceding ?gures taken in the di
of course, disposed longitudinally at the same
rection of the arrows 3—3 of Fig. 2;
angle to the axis of the mandrel Ill to obtain
Fig. 4 is an enlarged, transverse, sectional view
45 the wedge-like character of the end l4 shown.
taken on the line 4-4 of Fig. 2;
It will be observed that the walls iii are each po
Fig. 5 is an enlarged, fragmentary, sectional
sitioned at the trailing edge of their correspond
view taken axially through the outer end of the
ing surfaces It with respect to the direction of
mandrel and the abrading elements thereon as
rotation of the mandrel, indicated in Figs. 3 and
on the line 5-5 of Fig. 4;
4 by the arrows ‘2E3. The walls [8 are not‘per
Fig. 6 is an enlarged, fragmentary, transverse, 50 pendicular to the planes of the corresponding
sectional view taken on the line 6-4:‘ of Fig. 2;
walls IE but are inclined so that their outer ends
Fig. 7 is an enlarged, transverse, sectional View
overlie the junction with their corresponding
taken on the line ‘l--'l of Fig. 2;
'
wall, and, while they may be either ?at or curved,
Fig, 8 is an enlarged end view of the mandrel
they are preferably curved as illustrated, but, in
taken looking in the direction of the arrows 8-8
of Fig.2; and
'
'
Fig. 9 is a fragmentary side elevational view
illustrating the application of the present inven
tion to a hone having abrading elements arranged
in tandem or multiples.
either case, so as to provide a more or less hook
like engagement with respect to the co-operat
ing abrading elements to be received thereby.
It is the surfaces It which taper toward one
60 another in extending from the portion l2 toward
2,419,660
3
4
the outer end of the mandrel so as to provide the
forward end of each corresponding backing mem
ber 26 is provided with a tongue 36 which is bent
wedge for adjusting the effective diameter of the
abrading elements, the height of the walls [8
above their respective co-operating walls or sur
faces l5, therefore, being of a minimum height
with a minimum amount of hook at the rear end
into ?at, contacting engagement with such in
clined face ofthe corresponding notch 34. Pref
erably the notches 34 are of greater axial depth
than the thickness of the tongue 36 so that the
of the surfaces l5 and being of a maximum height Y . - backing members 26 lie in axially spaced relation
and, therefore, provided with a maximum amount
of overlie or hook with respect to the line of‘ "
rearwardly of the forward or outer end face of
the abrasive elements, this feature permitting the
junction between them and the corresponding 10 abrasive elements to be passed axially into con
surfaces It at their axially outer ends. The dis
tact with the blind end of a bore, or against the
tance from the line of junction of each surface I8
shoulder inv a bore, of a workpiece being operated
with its corresponding surface it from a plane ,
upon.
including the axis of the mandrel and perpen
The backing member 26 may be formed from
dicular to the surfaces it remains constant over 15 sheet metal or may be die-cast from suitable
the length of the portion M so that each pair
metal or other material suitable for the purpose.
of surfaces it and It may be formed by a prop
In any event, the ?anges 28 and 39 are prefer
erly contoured milling cutter by one pass of the
ably so spaced that, when applied to the mandrel,v
same over the length of the portion l4.
the ?ange 3!! is pressed in a direction to urge the
Also as best brought out in Fig. 4, a slot 22 is 20 flange 28 thereof against the corresponding sur
provided in the portion M and extending down
face l8 of the mandrel and hold it ?rmly in con
wardly from each surface IE on that side of the
tact therewith. At the same time, because of
center thereof opposite the wall 18, and each slot
the angularity of the ?ange 3B and of its asso
22 is inclined outwardly away from the center of
ciated groove 22, this causes a tension to be set
its corresponding surface [5 in extending down 25 up between the flange and the groove tending to
wardly therefrom. The slots 22 open onto their
pull the opposite side of the corresponding abra
corresponding surfaces It at a constant distance
sive member 24 downwardly intop?at contacting
from the line of junction of such surface and the
relationship with respect to the surface l6. Be
‘co-operating wall it and extend from the rear
cause of the hooklike characteristics of the sur
or inner end of the portion 5% to a point close 30 face it! and the described angularity of the slots
to, but inwardly spaced from, the outer end of
the portion l4 as best brought out in Fig. 5. This
last feature is so that the slot 22 will not cut the
22 and the co-operating ?anges 3B, eachabrading
member 2A is firmly held to the mandrel so as to
resist the centrifugal force to which it is sub
end of the mandrel into separated parts but will
jected during rotation of the hone, particularly
leave it tied together.
35 when the hone is not actively engaged in the bore.
An abrasive or abrading member, indicated gen
Furthermore, and particularly where the ?ange
erally at 24, is received by each co-operating pair
or tongue 39 of each abrading member 24 is so
spaced with respect to the corresponding ?ange
of surfaces It and iii, the inner surfaces of each
abrading member being formed to a shape and
28 thereof as to be placed under a tension tend
contour complementary to the surfaces 56 and 18 40 ing to urge the ?ange 28 against the correspond
so as to have substantially surface engagement
ing surface l8 of the mandrel, each abrasive mem
ber 24 is constantly urged into ?rm contacting
therewith. The radially outer surfaces of each
member 24 are formed as part of a cylindrical
relationship with respect to the corresponding
surface, the longitudinally extending lines of
surfaces I6 and iii of the bone. This last feature
which are parallel to the axis of the hone, and 45: has the additional advantage of eliminating any
when the abrading members 24 are adjusted to
space between the abrading member and the man
the proper axial position on the outer or wedge
drel into which particles of abrasive worn from
portion l4, such outer surfaces of the abrading
the abrasive elements 32 in service may ?nd their
members are concentric with the axis of the hone.
Each abrasive or abrading member 24 com
prises preferably a metal backing member 28
way, thus not only possibly interfering with the
proper operation of the hone, but through their
abrading action fostering early destruction of
the hone. The ?anges 30 may be readily bent
to obtain the above-described tension if not orig
inally in a position resulting in this effect.
adapted to lie in ?at, contacting relationship with
the corresponding surface It and provided with
an upstanding ?ange along one edge, the outer
face of which is complementary to the corre 55
It will be observed from the arrows 2t illus
trated in Figs. 3 and 4 and which illustrate the
sponding surface N3 of the mandrel and which
lies thereagainst. Intermediate its ends, each
normal direction of rotation of the hone, that
backing member 25 is provided with a down
the surfaces It act to take the primary driving
wardly and outwardly struck tongue 30 arranged
force between them and the mandrel l0 necessary
at substantially the same angle with respect to 60 to rotate the abrading members 24 in a bore, and
the surface is as the groove 22 and is received
that the resistance to turning the abrading mem
within‘ the corresponding such groove. Each
bers 24 in a bore reacting through the surfaces
abrading member 24 further includes an abrasive
is act in a direction tending to pull the abrading
element 32 which is ?xed to its corresponding
members downwardly against the corresponding
backing member 26 by any suitable or conven 65 surfaces I16. This effect supplements the action
tional means, as for instance, by suitable cement
of the ?anges 3B acting in the same direction.
or the like.
As an added means for securing each abrasive
It will be understood from the above that in
practice the abrading members 24 are mounted
element 32 to its corresponding backing member
against relative axial movement on the mandrel
26, and particularly to hold it against movement 70 ID, that the mandrel is rotated and relative re
axially of the hone in an outward direction, the
ciprocation is effected between the work and the
outer end of each abrasive element 32, as best
hone while the abrasive members 24 are received
brought out in Fig. 5, is provided with a notch
within a bore to be operated on thereby. Under
34, the radially inner face of which is inclined
such conditions, it will be appreciated that the
rearwardly from its radially inner edge, and the
abrading members 211 are positioned axially of
2,419,660
5
6
with respect to the surface of the bars 42 as
shOWn so that the downwardly bent portions 50
their combined effective diameter is substantially
serve in the nature of ratchet teeth locking each
that of the bore being operated upon, and that as
bar 42 to its corresponding abrading member 32
the abrasive elements 32 wear because of contact
against movement in either axial direction. This
with the work, the abrading members 24 are
gives a construction, which securely and rigidly
shifted longitudinally on the end 14 to increase
locks each abrading member 32 to its correspond
the effective combined diameter thereof and thus
ing bar -42 and yet provides one which permits
compensate for such wear. , In accordance with
relatively ready removal of the bars 42 from the
the broader aspects of the present invention, any
suitable means may be. provided for shifting the 10 abrasive members when replacement of the abra
sive members because of wear becomes necessary,
position of the abrading members 24 axially out
and permits ready securement of the bars to the
of the mandrel I0. However, in accordance with
new wear members where thus substituted for
a more limited phase of the present invention, a
the old. It might be noted at this point that pref
novel form of means'is provided for this purpose
erably the extensions 44 of the backing member
15
and will now be described.
'
26 are formed to present outwardly projecting
The mandrel I0 is provided with a pair of dia
longitudinally extending ribs or beads ‘52 on either
metrically opposite grooves 40 formedftherein in
side of the hole formed in each backing member
parallel relation to the axis thereof and the bot
by provision of the corresponding strap 46, there
tom surfaces of which are parallel to the aXis
by to reinforce and rigidify the portion 44 over
of the mandrel. As best brought out in Fig. 2' 20
the length of such hole.
the wedgelike'. end l4 of the mandrel It so that
the grooves 40 may extend from a point substan
tially midway the length of the cylindrical por
tion l2 of the mandrel to some suitable point
intermediate the length of the tapered portion
l4 thereof. Each groove vllll is so positioned an
gularly of the mandrel that it lies centrally of one
of the surfaces It on the tapered end of the man
drel. While the grooves 40 may be of any suit
It will be appreciated that the bars 42 may, in
the broader aspects of the invention, be connected
to any suitable form of actuating or control
25 means for controlling the relative position there
of axiallyv of the mandrel l0.
However, the
_ means provided in accordance with the present
invention is preferable and is brought out in
Fig. 2. As indicated in Fig. 2 the rear or cylin
able cross-sectional con?guration, preferably they
drical portion I2 of the mandrel I0 is axially slid
are of rectangular cross-sectional con?guration 30 ably received within a sleeve member 60, and
as best brought out in Fig. 7 and in such case in
the forward end of such sleeve member BI] is
each thereof is received a preferably rectangular
provided with a diametrically disposed slot 62 ex
ly sectioned bar 42.?
tending completely across the same. The slot ‘62
As best brought out in Figs. 2an'd 5, and par
is of a cross-sectional size and con?guration sub
' ticularly the latter view, the central ?at portion
stantially equal to that of the bar members 42,
of each backing member 26 is extended axially
and the rear ends of the bar members 42 are
rearwardly beyond the end of the corresponding
bent radially outwardly as at 64, and the end
abrasive element 32, as indicated at 44, and each
64 of each bar member 42 is received in that end
portion 44 in line with the corresponding groove
of the slot 62 in the corresponding side of the
40 is formed to provide an integral downwardly 40 centerof the mandrel. A cupshaped cap mem
projecting U-shaped strap'lportion 46 which ?ts,
or at least is slidably received, within such cor
_ responding groove 40. A similar strap 48 is pref
erably formed in the baseof each backingmem~
ber 26 within the length of the corresponding
abrasive element 32 as brought out in Fig. 5 in
particular. The straps ~46 and48 are preferably
formed by transversely slitting the backing mem
ber over its central portion over a width corre
ber 66 having an end wall which is apertured to
receive'the end l2 of the mandrel is threaded on
the forward end of the sleeve 60 as indicated in
Fig. 2 so that its end wall con?nes the outwardly
turned ends 64 of the bars 42 against relative
axial movement with respect to the sleeve 60, but
at the same time permits radial movement of
the ends 64 in the grooves 62. It will be appre
‘ ciated that this last feature is necessary, inas
sponding with the desired width of the strap and 50 much as the bar members 42 move radially with
at points spaced axially of the backing member
respect to the axis of the mandrel as the abrading
corresponding to the desired width of§the_strap,
members 24 are shifted. axially of the wedge l4
and then drawing thepart within the split down
of the mandrel. Thus, by the construction de
wardly to form such strap.
'
.
scribed, if the mandrel Illv is shifted axially with
The forward ends of the bars 42 have their, 55 respect to the sleeve 60, relative axial movement
outer surfaces tapered into complementary angu
is caused between the abrading members 24 and
larity to that of the inner faces of the abrading
the mandrel which relative movement a?ects
members 24 and are received against the under
either relative expansion or contraction of the
faces‘of the corresponding backing members 26
abrading members 24, as may be desired.
and are projected through the two corresponding 60
In order to enable control of the relative axial
straps 46 and 48 thereof until they are snugly
shifting movement of the‘ mandrel with respect
received therein and against the under-face of
to the sleeve 60 to be had and provide a means
they corresponding backing member 26, in which
for rotating-the hone, the sleeve 60, as brought
position they are ?xed to the corresponding back
out in Fig. 1, is in turn received in a sleeve Til.
ing member 26. Preferably, and in accordance 65
The
sleeve 10 isshouldered as at 1-2, and the
with a more limited phase of the present inven
sleeve 60 is received against such shoulder and
tion, in order to lock each bar 42 to its correspond
securely clamped thereagainst by means of a set'
ing backing member 26, each bar 42 in line ‘with
screw such as 14 disposed at an angle to the axis
the forward andrearward edge of the opening
provided therein by the formation of the strap 70 of the mandrel and the sleeve 60 in a direction
such that upon tightening the set screw‘ '14, it not‘
46 is inwardly notched, as brought out in Fig. 5,
only locks the sleeves 60 and 10 together against
and the metal of the corresponding extension
relative rotation, but urges the sleeve 60 against
44 at the corresponding'edge of such opening'is
the shoulder 12. v
, 1
driven down into such notch as indicatedat v50.
The notches are preferably angularly disposed 75 In order to restrain the mandrel 10 against
254193.60‘
7
relative rotation with respect to the sleeves 60,
and ‘N1, the bore of the sleeve 60 is provided-with
a longitudinally extending keywayv ‘l6, and the
mandrel H] is provided with a key 18 secured
against movement therein and slidably received
within the keyway ‘25.
‘Where it is desired to
rotate the home, then, of coursetthe sleeve ‘IE1
is mounted for rotation, as by means of a mem
8
reciprocation will not; causei relative-expansion
andcontraction of the hone. It will be appreci
ated thatby rocking the lever I02 about its pivot
pin I06 the relativeaxialposition of the mandrel
50 with respect to the abrading elements 24 will
be effected, thereby to effect anincrease or a de
crease of the effective diameter of the hone, de
pending upon the direction of reciprocation.
In honing long holes it is generally not advis
ber'Hl and suitably driven, and where it is desired
not only to rotate the hone, but also to recipro 10. able to attempt to use a short hone, particularly
cate it axially, then the sleeve 10 is not only
where the hone is to be utilized in straightening
mounted for rotation in, but for axial reciproca
up thebore. At the same time, it is impractical
tion with, the member 19 as well. Any suitable
in such case to makethe abrasive members such
or conventional means may be provided for ro~
as 24 of relatively great length, particularly for
tating the sleeve ‘l9 and/or axially reciprocating is small bores, for in such case the angularity of
the member 19.
»
the wedge-shaped end of the mandrel is neces
It is ordinarily undesirable to make the man
sarily so small that the effective life of an abra~_
drel H} of such length that it will project through
sive member is so short as to beimpractical. The
the length of the sleeve TE and its co-operating
practical way to provide a long hone in such cases
parts, ‘and in such case in order to enable rela 20 is to provide one with a plurality of pairs of hon
tive axial movement of the mandrel H1 and the
ing members arranged in tandem thereon. A
sleeve, 6!! to be controlled, it is necessary to pro
novel means of connecting such abrading mem
vide an axial extension on the rear end of ‘the
bers for simultaneous expansive and/or contrac
mandrel it. While this maybe accomplished in
tive movement is provided in accordance with a
any suitable or conventional manner, in the pres-r 25 further phase of the present invention and is
shown in Fig. 9.
' .
'
ent case the rear end of the mandrel, as best
brought out in Fig. 2, is annularly grooved as at
Referring to Fig. 9 it will ‘be noted that the
80 and is provided‘with a head 82 rearwardly
mandrel there shown up to a point indicated at
beyond such groove. This head $2, as best
H0 is identical to the mandrel heretofore de
brought out in Fig. 8, is originally circular in 30 scribed,_and corresponding features thereof are
indicated by the same numerals, except that such
section and concentric with the axis of the man
drel it, and its opposite sides are ?attened off
numerals bear a prime mark, This portion of
as at 84. A concentric extension 86, as brought
the mandrel, therefore, does not require to bevv
redescribed. The mandrel H1’ is axially extended
out in Fig. l, is provided for, the mandrel H] and
ispreferably of the same diameter as shown. On 35 beyond the end of the mandrel In as previously
its' forward end, it is provided with a so-called
described to such extent as is necessary to‘ ac
“locking nose” 88; which comprises a, cup-shaped
commodate the desired additional numbers of
pairs of 'abrading members. It will, be ‘appreci
member ?tting over the same and ?xed against
ated that it may be extended to ‘receive one ad
relative movement to it, as by means of a pin
89 or other suitable means. The bottom or end 40 ditional pair of abrading members, two addi
wall of the locking nose 88 is centrally provided
with an opening there-through of the same con
tour as the head 82, or optionally with a cross-slot
90 of slightly greater width than the width across
the flats 85 of the head 82 so as to be capable
of receiving the head 82 therethrough. This
slotted bottom wall of the nosepiece 88 is of sub
tional pairs of abrading members or any desired
number of pairs of abrading members. In Fig. 9
it is shown as extended su?iciently to accommog‘
date two additional pairs of abrading members
in tandem with the ?rst or inner set ofabrading
' members. Accordingly it is-shownras being pro
vided on each side thereof corresponding with
each of the inclined surfaces I6’ with additional
inclined surfaces Mia and lGb in axially spaced,
through the hole orslot 98, and then turned, 50 relation with respect to each other and to'the
surface “5', and it will be understood that each
through 90°, for instance, thereby to lock the
stantially the same thickness as the width of the
slot 80, so that the head 82 may be projected
of the surfaces I61; and I617 are bounded at one
mandrel lG'to the extension 85 for equal axial
side thereof by surfaces corresponding to‘ the
movement. Means, as, for instance, a key 92
surfaces l8 ?rst described and each is provided
?xed in the extension 85, working in a’ keyway
94 in the sleeve member '70, serves to releasably 55 with grooves therein corresponding with the
grooves 22 previouslydescribed.v
secure the mandrel i0 and extension 86 against
The abrading elements 24’ which are received
relative rotation in service, and, therefore, in
axially connected relation.
on the surfaces I6’ may be identical to the abrad
While any suitable means may be provided for
ing elements 24 ?rst described and connected to
e?’ecting relative reciprocation between the man 60 the bars 42' in identically the same manner'as
drel l0 and sleeve TB in order to control the ef
?rst described, with the exception only that the
fective diameter of the operative end of the hone,
forward end of the backing member 26' therefor
one form of such mechanism is shown more or
is extended as at H2 and inclined ‘radially out
less diagrammatically and isas follows. The rear
wardly and formed with a transverse bifurcated
65
end of the extension 86 is provided with an an~
or yoked eye “4 at its free end. The mandrel
nularly grooved collar I95} ?xed thereto. The bi
10' between the siu'faces l6’ and Him is suitably
furcated end of a lever I02 bridges the opposite
cut away to accommodate the end H2 and eye
sides of the collar I 90, and each arm on such
I I4, and it, is similarly cut away betweenthe sur~
bifurcated end is provided with an inwardly pro
faces 16a and l6b. The backing member 26a
jecting pin HM which is received within the groove 70 for each of the next outward abrading members
of the collar IUD. The lever W2 is pivoted at I06
24a, may be identical to the backing member 26,
to a suitable part held in axially ?xed relation
previously described, except that it is not formed
with respect to the sleeve 19, as, for instance,
with the straps such as 46 and 48 for reception of
the member '19, this being necessary so that in
event the wholeassembly is reciprocated, such
a bar member such as 42, and its rear end is
formed toprovide an eye for reception between
2,419,630
abrading member received in the corresponding
the opposite arms of the bifurcated eye H4 and
i is connected thereto by means of-apin 116, thus
said groove.
~V
'
a
r
-
I
2. In a honing device, in combination, a man
serving to interconnect, the abrading elements
: 24' and 24a for simultaneous axial movement
with respect to the mandrel ID’.
The backing members 26a in turn are each
provided with a forward extension [12a identical
to the extension H2 of the backing members
7 drel vhaving a ‘pair of ?at surfaces arranged on
to the abrasive members ?rst described and be
?rst-mentioned surface, said mandrel being pro
vided with a ‘longitudinally extending groove
therein in association with each of the ?rst-men
tioned surfaces, each said groove opening onto
the
corresponding first-mentioned surface in par
15
allelism to the line of junction of said corre
sponding ?rst-mentioned surface and the corre
sponding of said second-mentioned surfaces and
extending from its point of opening onto said
'7 opposite sides of the-longitudinal axis thereof and
bothequally inclined to said axis in the same
"direction to form a wedge, a wall bounding the
angularly corresponding edge of each of said sur- ‘
facesandproviding a surface overhanging the
26'. The abrasive members 24b which are re
ceived upon the surfaces 16b may be identical 10 line of junction between it and the corresponding
‘received on the mandrel in the identical manner,
with the exception that like the backing members
26a, they are devoid of any loops such as 46 and
48 in the ?rst-described construction and their.
rear ends are extended and provided with eyes
co-operating with the forward bifurcated eyes
“4a of the corresponding backing members 26a
and secured thereto by corresponding pins “6b.
The forward ends of the backing members 261) for 20 corresponding ?rst-mentioned surface at an_in
,clination to such surface away from the corre
the abrading members 2412 are not extended as
sponding second-mentioned surface, an abrading
in the case of the backing members 26a, but may
member having surfaces complementary to each
be formed in the identical manner to the for
co-operatingv ?rst and second-mentioned sur
ward ends of the backing members 2'6‘?rst de
faces and receiving in complementary relation
' scribed.
with
respect thereto, and a projection on ‘each
It will be appreciated from the above that from
said-abrading member received in the corre
the construction illustrated in Fig. 9, the mandrel
sponding said groove, said projections being resil
is provided with a series of inclined or wedgelike
ient and bearing against that face of the corre-,
‘portions arranged in tandem to each other and
sponding said groove opposite the corresponding
each of the same angularity, and that the
30
abrasive members are applied to each of the
wedgelike portions in substantially the same
manner as the abrasive members ?rst described
second-mentioned surfaces whereby to resiliently
urge said abrading membersagainst both said co
operating surfaces.
I
>
_
3. In a honing device, in combination, a man
and are therefore mounted thereon against radial
movement under the influence of centrifugal 35 drel having a pair of ?at surfaces arranged on
opposite sides of the longitudinal axis thereof and
force, but may be shifted longitudinally thereof to
both equally inclined to said axis in the same
vary the effective diameter thereof. Further
direction to form a wedge, a wall bounding the
more, it; will be appreciated that in view of the
angularly corresponding edge of I each of said
fact that all of the pairs of abrasive members are
secured together for equal and simultaneous 40 surfaces transversely curved on its innerside to
provide a curved surface extending into ove_r—_
movement axially of the hone, the effective diam
eter of all pairs of abrasive members may becon
trolled in identically the same manner asin the
construction ?rst described. It may also be
hanging relation with respect to the julmion be
tween ‘it and the corresponding ?rst-mentioned
surface, said mandrel being provided with alon
gitudinally extending-groove therein in associa
noted that the additional abrasive membersmay 45 tion with each of the ?rst-mentionedv surfaces,
be removed from the mandrel for the purpose of
each said groove opening onto the corresponding
replacement or repair by simply driving out the
?rst-mentioned surface in parallelism to the line
pins I I6 and ll?a which thereby disconnects the
of junction of said corresponding ?rst-mentioned
abrasive members from one another.
,
surface and the corresponding of said second-7
Having thus described my invention,.what I 50 mentioned surfaces and extending from its point
claim by Letters Patent is:
‘
of opening onto said corresponding ?rst-men
1. In a honing device, in combination, a man
tioned surface at an inclination to such surface
drel having a pair of ?at surfaces arranged on
away from the corresponding second-mentioned
opposite sides of the longitudinal axis thereof and
surface, an fabrading member having surfaces
55
both equally inclined, to said axis in the same
complementary to each co-operating ?rst and
direction to form a wedge, a wall bounding the
second-mentioned surfaces and receiving in com
angularly corresponding edge of eachof said
surfaces and providing a surface overhanging the
line of junction between it and the corresponding
?rst-mentioned surface, said mandrel being pro 60
vided with a longitudinally extending . groove
plementary relation with respect thereto, and a
projection on each said abrading member received
in the corresponding said groove.
"
‘
.4. “In a. honing device, in combination, a man;
drel having‘ a ‘pair of flat surfaces arranged-on
opposite 'sides of the longitudinal axis thereof and
both equally inclined to the axis in the same
therein in association with each of the ?rst-men
tioned surfaces, each said groove opening onto
the corresponding ?rst-mentioned surface in
' general direction to form a wedge, an abrading
parallelism to the line of junction Of said corre 65 member received on eachof-said surfaces, said
sponding ?rst-mentioned surface and the corre
mandrel provided with a groove in opposite sides
sponding of said second-mentioned surfaces and
thereof in, alignment with said surfaces and each
extending from its point of opening onto said
extending into intersecting relationship with re
corresponding. ?rst-mentioned surface at an
spect to the corresponding of said surfaces, each
inclination to such surface away from the corre 70
sponding second-mentioned surface, an abrading _
member having surfaces complementary to each
co-operating ?rst and second-mentioned surfaces
of said abrading members being provided onv its
inner surface with a loop projecting into the cor
responding of said grooves, and a rod receivedv
in each of ‘said grooves projecting into the loop
and receiving in complementary relation with
respectthereto, and a projection on each said 75 of then'corresponding abrading member and'see.
2,419,660
11
'cured against relative longitudinal movement
with respect thereto.
I
V
i "
,5
5. In, av honing device, in combination'a man
drel having v"a pair of flat surfaces arranged on
opposite sides of the longitudinal axis thereof
and both equally inclined to the axis in the same
‘general direction to form a wedge, an abrading
‘member received on each of 'said surfaces, said
12
device, a sleeve member nonrotatably but axi
ally slidably receiving the opposite end of said
mandrel therein, means interconnecting 'said
abrading members vand said sleeve for maintain
ing said abrading members at a ?xed distance
with respect to said sleeve, the last-mentioned
end of said mandrel having a noncircular head
formed thereon, and an extension for said man
» mandrel provided with a groove in opposite sides
drel comprising a member axially shiftable there
» thereof inialignment with said surfaces and each 10 with havinglan opening in one end thereof of a
extending into intersecting relationship with
respect to the corresponding of said surfaces,
'each of said abrading members being provided
contour to slidab-ly receive said head therein and
a shoulder axially inwardly of said opening co
operating Withsaid head upon relative, turning
on its inner surface with a loop projecting into
movement between said mandrel and said exten
‘the corresponding of said grooves, a rod received 15 sion after said head has been received in ‘said
in each of saidgrooves projecting into the loop
opening operable to releasably lock said mandrel
of ‘the’ corresponding abrading member, each of
against withdrawal'from said extension.
said rods having-a recess therein, and portions
9. In a honing device, in combination, a man
offsaid loops- being ‘displaced into said recesses
drel having a tapered end portion, abrading ele
whereby to lock said abrading member against 20 ments received on said tapered‘ end portion and
"relative longitudinal movement with respect to
adapted ‘for relative movement longitudinally
said rods.
7
therefor'to control the effective diameter of said
6. In a honing device, inv combination, a man
device, a sleeve member nonrotatably but axially
'drel having-a pair of ?at surfaces arranged on
slidably receiving the opposite end of said man
opposite sides of the longitudinal axis thereof and
drel therein, means interconnecting said abrad
both equally inclined to the axislin the same gen
ing members and said sleeve for maintaining said
eral direction to form a wedge, an abrading mem
abrading members ‘at a ?xed distance with re
ber- received On each‘of said surfaces, said man
spect to said sleeve, the last~mentioned end of
drel provided with a groove in opposite sides
said ‘mandrel having va noncircular head con
thereof in alignment with’ said surfaces "and each 30 nected thereto by a neck portion of less cross
extending into intersecting relationship with re
sectional area than said head, a mandrel exten
spect to the corresponding of said surfaces, each
sion comprising a bar axially aligned with said
of said abrading members being provided on its
mandrel, a cupshaped member ?xed to that end
vinner surface with a loop projecting’ into the cor
of said bar opposed to said mandrel and arranged
responding-of said grooves and having an open
with its end wall'in spaced relation with respect
ing above said loop, a rod received in each of
to thecorresponding end of said extension, said
said'grooves each projectinginto the loop of the
end wall having an opening therein of a con
corresponding abrading member, each of said
tour to receive said head therethrough and being
rods having a notch therein in approximate align
of a thickness substantially equivalent to the
nient with thé axially forward edge-of said open 40 length of said neck, said head being inserted
ing "and a notch therein in approximate 'align
through vsaid opening and relatively turned with
merit-with‘ the axially rearward edge of said open
respect to its entering position'w'nereby to lock
ing; and the material of said loops at said'edges
said head against relative axial movement to said
of said’ openings- being displaced-into the corre
cupshaped member.
'
responding said notches whereby to look said 45
10. Ina honing device, in combination, a man
abrading members to their'corresponding said
drel‘having a tapered end portion,~abrading ele
rods.
'
i
'
iIjn'a honing‘device, in combination, a man
ments received on said tapered end portion and
adjustable longitudinally of said mandrel thereon
drel having a pair of ?at surfaces arranged'on
whereby to vary the e?ective diameter of said
opposite ‘sides of the longitudinal axis thereof 50 honing device, a sleeve axially‘ slidably receiving
andfboth equally inclined to the axis in the same
the opposite end of said mandrelutherein, means
general direction to form a Wedge, an abrading
co~operating between said mandrel andrsleeve
member’received‘on each of said surfaces, said
maintaining, the vsame against relative rotation
mandrel provided with a groove in opposite sides
with respect to each, other, means operativel'y con
thereof in alignment with said surfaces ‘and each 55 necting said abrading elements and'said sleeve
extending into intersecting relationship with re
maintaining ‘said abrading elements at ‘a con
spect to the corresponding of said surfaces, each‘
stant distance from said sleeve, a rotatable mem
of'said abrading members comprising an abrad
ber having a bore therein provided with a shoul
ing element and a metal backing member there
der, said sleeve being relatively closely received
for projecting rearwardly therebeyond, the rear 60 in said last-mentioned member, and means co
wardly'lprojecting portion of each of said back
operating between said last-mentioned member
ingjmembers being provided on its inner surface
and said sleeve serving to simultaneously main
with a loop projecting into the corresponding of
tain said sleeve against relative rotation with
‘said- "grooves and an opening therein abovejsaid
respect to said last-mentioned member and in
loop, longitudinally extending ribs formed ineach 65 abutting relationship with respect to said shoul
rearwardly projecting portion of said backing
der.
.
members on each side of said opening therein, and
11., In a honing device, in combination, a man
means locking each of said abrading members to
drel having a tapered end portion, abrading ele
its'corresponding said rod against relative axial
ments received on said tapered end portion and
movement with respect thereto.
70 adjustable longitudinally of said mandrel thereon
> 8. In a honing device, in combination, a man
drel having a tapered end portion, abrading ele
ments received on said tapered end portion and
adapted for relative movement longitudinally
whereby to vary the effective diameter, of said
honing device, a sleeve axially sli‘d'ably receiving
the opposite end- of said’ mandrel therein, means
co-operati-ng between said mandrel and sleeve
thereof to control the'eifective diameter of said 75 maintaining the same against relative rotation
2,419,660
13
with respect to each other, means operatively
connecting said abrading elements and said sleeve
maintaining said abrading elements at a con
stant distance from said sleeve, a rotatable mem
ber having a bore therein provided with a shoul
14
of the next adjacent abrading member located
axially rearwardly therefrom on the same side
of said mandrel, whereby to interconnect all of
said abrading members on the same side of said
mandrel for equal movement axially of said man
drel.
der, said sleeve being relatively closely received
in said last-mentioned member, means col-‘oper
13. In a honing device, in combination, a man
drel having a plurality of axially spaced pairs of
ating between said last-mentioned member and
flat surfaces arranged on opposite sides of the
said sleeve serving to simultaneously maintain
axis thereof with both surfaces of
said sleeve against relative rotation with respect 10 longitudinal
each of said pairs equally inclined to the axis
to said last-mentioned member and in abutting
of said mandrel in the same direction to form a
relationship with respect to said shoulder, a man
wedge, an abrading member received on each
drel extension received by said last-mentioned
of said surfaces, each of said abrading members
member in concentric relation with respect to
comprising an abrasive element and backing
said mandrel, the opposed ends of said exten 15 member secured thereto, the backing member of
sion and said mandrel being formed for axial
each of said abrading members positioned ax
locking relation with respect to each other when
ially rearwardly of the outermost pair of said
in one relative position of angular relation with
abrading members extending forwardly of its
respect to each other and axially disengageable
corresponding abrasive elements and the backing
from each other when in another angular posi 20 member of each of said abrading members out
tion with respect to each other, and means co
wardly of the axially inner pair of said abrad
operating between said extension and saidlast
ing members being provided with an extension
mentioned member releasably maintaining said
projecting forwardly of the corresponding of
extension in the ?rst-mentioned angular posi
said abrading elements, said extensions termi
tion.
12. In a honing device, in combination, a man
25 nating in eyes, and pin means passing through
the eyes of each rearward extension and through
drel having a plurality of axially spaced pairs of
the eye of the forward extension of the next
?at surfaces arranged on opposite sides of the
adjacent abrading member located axially rear
longitudinal axis thereof with both surfaces of
therefrom on the same side of said man
each Of said pairs equally inclined to the axis 30 wardly
drel whereby to interconnect all of said abrad
of said mandrel in the same direction to form
ing members on the same side of said mandrel
a wedge, an abrading member received on each
for equal movement axially of said mandrel.
of said surfaces, each of said abrading members
HARRY C. SATTERTHWAITE.
comprising an abrasive element and backing
member secured thereto, the backing member of 35
REFERENCES CITED
each of said abrading members positioned axially
rearwardly of the outermost pair of said abrading
members extending forwardly of its correspond
ing abrasive elements and the backing member
of each of said abrading members outwardly of 40
the axially inner pair of said abrading members
being provided with an extension projecting for
wardly of the corresponding of said abrading ele
ments, said extensions terminating in eyes, and
means releasably interconnecting each said rear
ward extension and the said forward extension
The following references are of record in the
file of this patent:
UNITED STATES PATENTS
Number
2,354,890
2,336,043
Name
Date
Staples __________ __ Aug. 1, 1944
Staples ___________ __ Dec. 7, 1943
2,349,994
Snader _____- ____ __ May 30, 1944
2,349,995
Archer __________ __ May 30, 1944
2,350,969
Sunnen ___________ __ June 6, 1944 '
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