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Патент USA US2408442

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Oct. l, 1946.
Filed Oct. 2,- 1944
Patented Oct. 1, 1946l
Harold Nutt, Chicago, Ill., assignor to Borg-War.
ner Corporation, Chicago, Ill., a corporation of y
Application October 2, 1944, Serial No. 556,710
5 Claims.
(Cl. 192-107)
The present invention relates to friction
clutches of the type Yused in motor vehicles and
it has particular reference to a clutch plate cush
n 2
allel to eachother. The straight margin at one
side of the body which extends toward the neck
is provided with an oblique portion extending in
ion arrangement for carrying the friction rings
ward to the recess to accommodate and lie sub
stantially parallel to the straight side edge of the
>adjacent cushion member.
the driving and driven elements of a clutch.
Additional objects, aims, and advantages of the
It is one of the principal objects of this in
invention contemplated herein will be apparent to
vention to simplify they construction of a friction
persons skilled in the art after the construction
clutch cushion arrangement such as contemplated
herein, and to improve the eñiciency, operation, 10 and operation of the friction clutch cushion ar
rangement is understood from the within de
and dependability of such arrangement.
scription. It is preferred to accomplish the nu
It is also a principal object of this invention
that are pressed toward each other for coupling `
merous objects of this invention and to practice _
to provide a cushion element with an elongated
the same in substantially the manner hereinafter
foot for attachment to the supporting disc so
that the foot extends along a greater peripheral 15 fully described and more particularly as pointed
out in the claims. Reference is made to the
portion of the disc than has heretofore been pos
sible with prior arrangements. This permits the
accompanying drawing that forms a part hereof,
attaching means or rivets to be widely spaced
from each other, and also the use of a cushion
Fig. 1 is a transverse section of portions of
a friction clutch showing the instrumentalities
member having considerable radial length upon
a relatively small diameter mounting, thus re
ducing to a minimum the shearing movement on
of the 4present improvement thereon, the View
being taken on the plane of line I-I of Fig. 2;
the attaching rivets or other means.
Fig. 2 is a fragmentary face View or plan show
ing the arrangement of the cushion members on
A further principal object hereof is to provide
the cushion members with attaching feet that
overlap the feet of the adjacent or proximate
members, thereby reducing the total number of
. the clutch plate improvement viewed on the
rivets and the operations required toV anchor all
of the cushions on'the disc which is d'ue to the
fact that the overlappedfeet portions will re
quire only one rivetV at each overlapped region.
Another object resides in providing a novel
foot portion upon a cushion, such foot portion
on agiven cushion being longer than the periph'
eral space upon the mounting disc between the
cushion at‘the sides of the given disc.
Stillanother object hereof is to provide the
attaching feet of the cushions with laterally off
set toe portions thereby to accommodate such
toes to their- overlapping arrangement when in
mounted on the disc.
~ A still further object is to provide a clutch
plane ,of line 2-2‘of Fig. 1;
Fig.‘3 is a sectional View on line 3-3 of Fig.
2; and
Fig; 4 is a sectional View on line 4-4 of Fig. 2.>
The drawing is to be understood as being more
or less of a schematic character for the purpose
of; disclosing a typical or preferred form of the
improvement contemplated herein. In the draw
ing like reference characters identify the same
Yparts in the different views.
Inthe embodiment of the present invention
shown in the drawing, the clutch plate assembly
comprises a hub I0 splined to a rotatable shaft
and having aY radially projecting ñange II to
whichk an annular mounting plate or disc I2 is
anchored by‘bolts or rivets I3. VA series of rela
tively light-weight cushion'members I4, prefer
ably of` yieldable material such as sheet metal,
are‘secured by means of rivets I5 to the margin
having a flat radial region preferably adjacent ' = of the mounting plate.~
A cushion member comprises a plate of gen~
one edge and a bowed region of greater extent
verally rectangular shape that has ar flat region
than the flat region, a narrow neck at the flat
I6 Vextending in a radial direction from its an
region of the wing, and an elongated foot ex
chored edge. The remaining portion of the
tending lateral to the neck for anchoring the
cushion plate is bowed as at I1 to provide a
cushion member on the mounting plate, there
freely disposed wing element of concavo-convex
being an elongated relatively narrow recess be
tween the foot and the bowed region of the wing.
The cushion members are adapted to carry the
In the present arrangement the outer or periph
friction creating members I8 and I9 of ring-like
eral margin of the cushion has a segmental con
tour and the'side margins are straight and par 55 form that are mounted upon opposite sides of
`plate cushion member of .generally rectangular
shape that comprises a body portion or wing
the cushion members. As seen in Fig, 1 the fric
tion member' I8 is secured to the flat region I6
of the cushion member by rivets 2U that are
arranged in a substantially radial row, and the
friction member I9 is secured to the bowed body
portion Il by rivets 2| that are arranged in a
plane approximately parallel with the plane of
rivets 2i). By reason of the arrangement de
scribed, the cushion member carries the ring I8
of the feet so that they have overlapped end
portions which are connected to the mounting
disc by one rivet and a single riveting opera
While I have described my invention in con
nection with one specific embodiment thereof, it
is to be understood that this is by way. of illus
tration and not by way of limitation and the
scope of my invention is deñned solely by the ap
pended «claims which should be construed as
broadly as the prior art will permit.
on one side and the ring I9 upon its opposite side,
with the bowed portion Il of the cushion tend-v
ing to urge the rings away from each other vso
I claim:
that the friction creating rings will yieldingly re
1. A friction clutch plate cushion element of
ysubstantially rectangular shape that comprises
spond to lateral pressure exerted against them.
The friction ring i8 lies close to the radial sur 15 a wing »portionv having a ñat radial region adja
face of a fiywheel or other driving element 22
cent a side edge and a bowed region of greater
and the ring I9 is adapted tov be yieldably moved' v -extent than the flat region, the side edges of
in the direction of the flywheel when the pres- „` said wing having parallel portions and one of
said edges having an inwardly extending oblique
sure plate or other driving element 23 of the
clutch moves longitudinally of the shaft. Thus 20 portion; a narrow neck portion forming a con
the clutch plate assembly lconstitutes the inter
tinuation of the flat win-g region; an elongated
foot portion extending lateral .to said lneck por
mediate or driven elements of the friction clutch.
tion for eiîecting anchorage of the cushion ele
As will be seen in Fig. 2, the cushion member
I4 has a generally rectangular contour 'with par
ment on a support; and an oiîset region at an
allel side edges 24 and 25 that are approximate
end of said foot portion.
ly raidally disposed, and the outer margin 25 is
2. A friction clutch plate cushion element as
deñned in claim 1 wherein the offset portion of
an arc that is struck from a radius at the axis. of
the foot comprises a toe at the end of the foot
remote to the neck and positioned beyond the
The inner or mounting portion of the cushion
lis formed with an elongated arcuate foot 2T con 30 adjacent end of the oblique edge portion of said
nected to the wing portion by a neck 28. The
side edge 25, as it approaches the foot portion, or
3. A friction clutch plate comprising a mount
about midway its length, is formed with an
ing disc; cushion elements arranged in annular
oblique portion 25a so that this latter portion of
array on the peripheral region of said disc, said
the edge extends inwardly of the wing and ter
cushion elements each embodying aowing por
minates at the recess 29 that is formed in the
tion having a fiat radial region adjacent one edge
cushion member to provide the neck 28. Prefer
and a bowed region of greater extent than said
ably the neck has a width that is coextensive
flat region, the side edges of said win-g having
with the width of the radial iiat region IE upon
parallel portions and one of said side edges hav
the cushion member.
40 ing an inwardly extending oblique portion; a
The elongated arcuate foot 27 is mounted in
narrow neck portion forming a continuation of
overlying relation to the margin of the mounting
said flat radial wing region; an elongated foot
disc I2 and it is anchored to the disc by rivets I5
portion extending lateral to said neck portion in
that pass through spaced aligned holes in the
overlying relation to the peripheral region of
foot and the disc. The toe of the foot is offset as 45 said disc; an oiiset region at an end of said foot
clearly shown at 3l to permit the toe of a cushion
portion overlapping the foot portion of an adja
member to be overlapped with the heel portion
cent cushion element; anchoring means passed
of the proximate cushion member with the re
through said disc and the overlapping regions of
spective holes in register so that a single rivet l5
the cushion elements; and friction facin-gs on 0p
is employed to anchor these overlapped portions 50 vposite sides of said cushion elements,'one of said
of two cushions to the mounting disc. When
facings secured to the ilat radial regions of said
mounted in this manner, it will be seen the
cushion elements, and the other of said facings
oblique portion 25a at the left-hand edge `of a
secured to the bowed regions of `said'cushion ele'
cushion will lie close to and `in substantially par
allel relation to the straight left-hand edge >2_4
4. A friction‘clutch plate as defined in claim 3
of the next cushion. This arrangement dispo-ses
wherein the offset region of the foot comprises a
the outer corner regions 32 and 33 of adjacent
toe at the end of the foot remote to the neck and
positioned beyond the adjacent end of the oblique
cushions in close relation to each other. Also,
it will be apparent that the superñcial varea of
edge portion of said wing.
the series of cushions Ais materially increased 60
5. A friction clutch plate as deiined in claim 3
over such areas as are provided in `prior struc
wherein the bowed region of the wing is spaced
tures, and this is accomplished without sacri
radially outward from the periphery of the disc;
_ ñcing the strength or dependability of the cush
and the oiiset region of the foot comprises an
ion members. Furthermore, the main body por
apertured toe at the end of the foot remote to the
tions or free wings of the assembled cushions lie
neck and beyond the adjacent end of the >oblique
close to each other, and a dependable and more
.edge portion of .said wing.
rigid mounting is eiïected due to the elongation
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