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Патент USA US2126149

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Aug., 9? H93.
c. B. SPASE
ZÄZÜ’M@
CLUTCH
Filed June 12, 193'?
2 sheets-shea 2
ATTORNE S.
Patented Aug. 9, 1938
UNITED STATES PATENT OFFIQE
2,126,149
CLUTCH
Charles ß. Spase, Nedrow, N. Y., assignor to
W. C. Lipe Inc., Syracuse, N. Y., a corporationv
of New York
Application June 12, 1937, Serial No. 147,978
14 Claims.
This invention relates to friction clutches, such
as are used in motor vehicles, and it has for its
principal object a clutch lever and clutch spring
arrangement, which is particularly simple in con
5@ struction, and economical in manufacture.
More specifically, it has for its object a lever
construction and arrangement through which
the `force of the clutch spring is applied to the
pressure ring of the clutch to hold the clutch
lohlfengaged, whereby the levers are held assembled
' by means, as a floating ring, which presses against
the inner ends thereof, and has no connection
. with a throw-out sleeve or collar, and an arrange
ment of the clutch spring elements in the form
l5~iof leaf springs pressing on the ring on the side
opposite to that engaged by the levers. y
It further has for its object a. clutch in which
the spring is a discoidal plate or segments of a
(Cl. 192-68)
8 designates an annular series of clutch levers,
spaced apart around the clutch shaft 1, the levers
being unsecured or not pivoted but press at 9 and
il) on the back plate structure anden the pressure
ring, or fulcrumed at 9 on >theback plate and
pressing at Ill on the pressure ring, when the
clutch is engaged. The force is applied to the
inner ends of the levers. The outer» ends of the '
levers are located within a flange II on the rear
side of the pressure ring and are formed with
extensions or lugs reduced in width interlocking
in notches IZ in the flange II. The inner ends of
the levers are formed arcuate or with seats I3 in
which is seated a ring i4 preferably circular in
cross section, the ring connecting the levers t0
gether. This ring is not connected to the throw
oàlt sleeve or collar and is spaced from the clutch
s aft.
discoidal plate in contradistinction to coiled
In the clutches heretofore used, the inner ends
It further has for its object an arrangement of
of the clutch levers extend into a groove orchan
nel 'provided on the throw-out sleeve. In the
zorisprings.
the levers alternately with inwardly extending
spring arms or segments, and an arrangement of
said arms and levers relative to the floating> ring
against which the inner ends of the levers and the
arms or segments of the spring, press.
Other minor objects apear throughout the spec
iflcation.
The invention consists in the novel features
`and. in the combinations and constructions here
inafter set forth and claimed.
In describing this invention, reference is had to
the accompanying drawings in which like char
clutch of this application, the inner ends of the
levers coact with the ring I4 and are not inter
locked with the throw-out‘sleeve or collar.
The clutch spring consists of a discoidal spring
plate or segments of adiscoidal plate, the plate
or the segments thereof being secured atv their
outer margins or ends to the back plate structure
and being slotted to form inwardly extending
arms which press against the ring I4 in opposi
tion to the inner 'ends of the levers 8.
As here illustrated, 'the vdiscoidal spring is
formed in three segments I5, I 6 and I'I, which are
acters designate corresponding parts in all the , secured, as by rivets I8, or in any other manner,
35
views.
_
Figure l is a fragmentary longitudinal sectional
view of a clutch embodying this invention.
Figure 2 is a rear elevation, partly broken
away and partly inA section.
40
Y
I designates the driving element of the clutch,
which is usually the fly wheel of the engine of the
vehicle. 2 designates the pressure ring rotatable
with the fly wheel. 4 designates what is oom
monly called the back plate, this being secured to
45 i the fly wheel, as by screws 5.
6 designates the disk- or plate of the driven ele
ment, this being rotatable with and shiftable
axially ofthe clutch shaft 'l and having friction
faces onopposite sides of its outer margin for
50i coacting with the face of the‘fly wheel and with
the pressure ring 2.
,
The principal feature. of the invention lies in
the motion-.transmitting and multiplying levers
or sofcalled clutchlevers and the clutch spring
arrangement. .
at their outer margins, to the back plate struc
ture, the segments being formed with slots I9»
extending outwardly from the central portion
thereof providing spring arms 2i). The levers 8
extend inwardly obliquely through the slots I9
351 »
from the inner side of the spring disk or the seg~ 110il
ments thereof to the other side, through the slots
I9. The arms 2l] form in effect leaf springs, and
in order to obtain a sufficient spring effect, th‘e
spring disk or element may be laminated, as seen
in Figure 1. The inner ends of the spring arms
I9 are deflected inwardly at 2|, that is, the por
tions opposed to the seats I3 are deñected or in
clined inwardly to form wedge or cam surfacespressing on the ring I4 `and acting to center it
relatively to the axis of the clutch or the shaft 1. 50;
These inclined ends 2l constitute means for cen
tering the floating ring I4.
22 designates the throw-out sleeve or collar,
which is slidable axially of the shaft 1„ and
which, when operated, thrusts against the inner
2
2,126,149
ends of the levers 8 to disengage the clutch against
the action of the spring arms 2li. The throw-out
collar is operated in the usual manner by a yoke
or fork, not shown, on the shaft on which the
clutch pedal is mounted.
The pressure ring 2 is released or pulled out,
when the throw-out collar is operated, .by means
of leaf springs 25, in contradistinction to coil
springs, pressing at their ends against the outer
10 side of the back plate and being connected be
tween their ends to the pressure ring 2 by screws
26 extending through holes 2'! in the back plate.
Preferably, the pressure ring has projections ex
tending through said holes 2l into which the
screws 26 thread. By moving the throw-out
collar 22 inwardly, the springs 25 react and shift
rearwardly slightly.
In order to ventilate the clutch, the pressure
ring is provided with passages 28 therethrough
20 and the peripheral wall of the back plate formed
with outlet openings 2S and also with projections
3B in advance of the outlet openings 2S, with
respect to the direction of rotation, as indicated
by the arrow. The passages 28 are also inclined
25 in a tangential direction to facilitate the outward
passage of the air, when the clutch is rotating.
The projections 3Q on the back plate Ll, which
rotates as a unit with the ily wheel and with the
pressure ring 2, are located to create a vacuum,
30 and hence a draft through the passages 29 and
28 during the rotation of the parts, as a unit.
This clutch construction is particularly ad
vantageous in that the spring and clutch levers
are readily assembled and held in position with
35 out connection to a throw-out sleeve, and further
in that owing to the spring arrangement, the
thrust of the throw-out collar, when the collar is
actuated.
3. In a clutch, the combination with a driving
element, a pressure ring rotatable with the driv
ing element, a back plate, a driven element in
cluding a friction disk extending between the
driving element and the pressure ring, a clutch
shaft on which the disk is. mounted, and a throw
outl collar shiftable axially of the clutch shaft;
of clutch levers pressing on the pressure ring
and the back plate, leaf spring elements carried
by the back plate and extending inwardly toward
the inner ends of the levers, the throw-out collar
thrusting, when operated, against the inner ends
of the levers in one direction, a ring encircling the
shaft and spaced therefrom, and interposed be
tween the inner ends of the levers and the inner
ends of the spring elements, said spring elements
acting on the ring in opposition to the thrust of
the throw-out collar, when the collar is operated, 20
the inner ends of the spring elements being
formed with wedge faces coacting with the ring
to center the ring relatively to the axis of the
clutch.
4. In a clutch, the combination with a driving 25
element, a pressure ring rotatable with the driv
ing element, a back plate, a driven element in
cluding a friction disk extending between the
driving element and the pressure ring, a clutch
shaft on which the disk is mounted, and a
throw-out collar shiftable axially of the clutch
shaft; of clutch levers pressing on the pressure
ring and the back plate, leaf spring elements
carried by the back plate and extending inwardly
toward the inner ends of the levers, the throw 351'
out collar thrusting, when operated, against the
inner ends of the levers in one direction, a ring
spring takes up a minimum` of axial space and is
encircling the shaft and spaced therefrom, and
located away from the source of heat generated
interposed between the inner ends of the levers
in the clutch, when in use.
and the inner ends of the spring elements, said
What I claim is:
40
1. In a clutch, the combination with a driving ' spring elements acting on the ringl in opposition
to the thrust of the throw-out collar, when the
element, a pressure ring rotatable with the driv
collar is operated, said ring being held in posi
ing element, a back plate, a driven element in
cluding a friction disk extending between the tion by the pressure of the spring elements press
îdriving element and the pressure ring, a clutch ing the same against the inner ends 0f the levers, 45
and wedge means on one of said parts between
shaft on which the disk is. mounted, and a throw
out collar shiftable axially of the clutch shaft; lwhich the ring is compressed for centering the
of clutch levers, the levers slidably pressing 0n ring relatively to the axis of the clutch.
5. In a clutch, the combination with a driving
ythe pressure ring and the back plate, leaf spring
elements carried by the back plate and extending element, a pressure ring rotatable with the driv 503
inwardly toward the inner ends of the levers, the ing element, a back plate, a driven element in
throw-out collar thrusting, when operated, cluding a friction disk extending between the
driving element and the pressure ring, a clutch
against the inner ends of the levers in one direc
shaft on which the disk is mounted, and a throw
tion, a ring interposed between the inner ends
out collar shiftable axially of the clutch shaft; 55.
55 îof the levers and the inner ends of the spring
elements, said spring elements acting on the of clutch levers pressing on the pressure ring
ring in opposition to the thrust of the throw-out and the back plate, leaf spring elements secured
at one end to the back plate and extending in
collar, when the collar is actuated.
2. In Va clutch, the combination with a driving wardly and having arms extending obliquely
crosswise of the levers to the inner sides thereof,
60 ielement, a pressure ring rotatable with the driv
and a ring interposed between the inner ends of
ing element, a back plate, a driven element in
the arms and the inner ends of the levers and
cluding a friction disk extending between the
driving element and the pressure ring, a clutch said spring elements thrusting axially outwardly
against said ring, the throw-out collar thrusting,
shaft on which the disk is mounted, and a throw
when operated, in the opposite direction against
'out collar shiftable axially of the clutch shaft;
the inner ends of the levers.
of clutchV levers, the levers pressing on the pres
6. In a clutch, the combination with a driving
` sure ring and the back plate, leaf spring elements
carried by the back plate and extending inwardly element, a `pressure ring rotatable with the driv
toward the inner ends of the levers and arranged ing element, a back plate, a driven element in
cluding a friction disk extending between the 70
70 alternately with the levers, the throw-out collar
acting, when operated, against the inner ends driving element and the pressure ring, a clutch
shaft on which the disk is mounted, and a throw
of the levers in one direction, a ring interposed
between the inner ends of the levers and the out collar shiftable axially of the clutch shaft;
of clutch levers pressing on the pressure ring
inner ends of the spring elements, said spring ele
and the back plate, leaf spring means secured 75'
75 `~ments acting on the ring in opposition to the
si.,
2,126,149
to the back plate and `havingLarms extending in
wardly >toward the inner ends of the levers, said
arms alternating with the levers and extending
obliquely` crosswise thereof from the outer sides
5r: to the inner sides ofthe levers, and means against
whi'chthe inner ends of said arms `and the in
ner- ends of the levers `press in opposite directions,
the` arms 'tending to press the inner ends of the
` levers -a:«.`:‘ially outward, the throw-out collar press
lûíriing, `when operated, in the` opposite direction
against ftheinner ends of the levers.
a clutch, the combination with a driving
elern'entgïa pressure ring rotatable with the driv
ingïielement, aback plate,`a driven element in
läècluding a friction disk extending between the
drivirig‘element and the‘pressure ring, a clutch
shaft on which the disk is mounted, and a throw
out collar shiftable axially of the clutch shaft;
of clutch levers pressing on the pressure ring
20 and the back plate, leaf spring means secured
to the back plate and having arms extending
inwardly toward the inner ends of the levers, said
arms alternating with the levers and extending
obliquely crosswise thereof from the outer sides to
the inner sides of the levers, and a ring interposed
between the inner end_s of said arms and the
inner ends of the levers, the throw-out collar
pressing, when operated, againstthe inner ends
of the levers in opposition to said arms.
3G
8. In a clutch, the combination with a driving
element, a pressure ring rotatable with the driv
ing element, a back plate, a driven element in
cluding a friction :disk extending between the
driving element and the` pressure ring, a clutch
shaft on which the disk is mounted, and a throw
out collar shiftable laxially of the clutch shaft;
of clutch levers pressing on the pressure ring and
the back plate, leaf spring means secured to the
back plate and having arms extending inwardly
‘
'50
5
(30
Cf)-
»0
75
the axis
of ‘ the‘clutch.
~
A ‘
"
-
10. In a clutch, the combination with a driving
element, Va pressure ring rotatable with the driv
ing. element, aback plate, a driven element in
cluding a friction disk extending between the
driving element and the’pressure-ring, a clutch
shaftlon‘which thefdisk is mounted anda throw- l
`out collar shiftable axially ofthe clutch shaft;
of clutch levers slidably pressing'onthe pressure 10
ring andthe back plate, vclutch spring: means
comprising leafA springs secured at their outer
ends to the back plate structure and extending i
radially inwardly, the leaf Asprings alternating
with the levers, and the inner ends thereof being
in different' radial planes from the ‘inner ends of
theV levers, where-bythe inner ends of the levers
and springs are staggered with respect to each
other, and. means interposed between the inner
ends of the springs and the inner ends of the 20
levers vfor coupling the springs and levers to
gether, whereby shifting force applied by the
throw-out collar toA the levers in one direction is
applied to the springs, and the force of the springs
applied to the levers in the opposite direction
through said means.
-
‘
‘ 11. In a clutch, the combination with a driving
element, a pressure ring rotatable with the driv
ing element, a back plate, a driven element in
cluding a friction disk extending between the driv 30
ing element and the pressure ring, a clutch shaft
on which the disk is mounted and a throw-out
collar shiftable axially of the clutch shaft; of
clutch levers slidab-ly pressing on the pressure
ring and the back plate, clutch spring means 35
comprising leaf springs secured at their outer
ends to the back plate structure and extending
radially inwardly, the leaf springs alternating
ternating with the levers and extending obliquely
with the levers, and means interposed between
the inner ends of the springs and the inner ends 40
of the levers for` coupling the springs and levers
crosswise thereof from the outer sides to the inner
together, whereby shifting force applied by the
4,1; toward the inner ends of the levers, said arms al
4
to wedge the ring into concentric relation with
sides of the levers, a ring encircling the shaft . throw-out collar to the levers in one direction
and spaced therefrom, and interposed between is applied to the springs, and` the force of the
the inner ends of said arms and the inner ends springs applied to the levers in the o-pposite direc
of the levers, the throw-out collar pressing, when tion, said means including a ring common to the
operated, against the inner ends of the levers in inner ends of all the levers and the springs.
opposition to said arms, the inner ends of the
12. In a clutch, the combination with a driv-`
levers and the inner ends of said arms being ing element, a pressure ring rotatable with the
formed to provide a wedge seat for said` ring driving element, a back plate, a driven element
to center the' ring with the axis of the clutch.
including a `friction-disk extending between the
9. In a clutch, the combination with a driving
driving element and the pressure ring, a clutch
element, a pressure ring rotatable‘with the driv ì shaft on which the disk is mounted and a throw
ing element, a back plate, a driven element in
out collar shiftable axially of the clutch shaft; of
cluding a friction disk extending between the slidably mounted clutch levers slidably pressing 55
driving element and the pressure ring, a clutch on the pressure ring and the back plate, clutch
shaft on which the disk is mounted, and a throw
spring means comprising leaf springs secured at
out collar shiftable axially of the clutch shaft; their outer ends to the back plate structure and
of clutch levers pressing on the pressure ring and , extending radially inwardly, the leaf springs al
the back plate, leaf spring means secured to the ternating with the levers, and means interposed 60
back plate and having arms extending inwardly between the inner ends of the- springs and the
toward the inner ends of the levers, said arms inner ends of the levers for coupling the springs
alternating with 'the levers and extending ob
and levers together, whereby shifting force ap
liquely crosswise thereof from the outer sides to plied by the throw-out collar to the levers in one
the inner sides of the levers, a ring encircling the direction is applied to the springs, and the force of
65
shaft and spaced therefrom and interposed be
the springs applied to the levers in the opposite
tween the inner ends of said arms and the inner direction, the inner ends of the springs extending
ends of the levers, the throw-out collar pressing, obliquely crosswise of the levers to the inner sides
when operated, against the inner ends »of the thereof, and said means. including a ringl between
levers in opposition to said arms, the ring being the inner ends of the levers and the springs.
70
cylindrical in cross section, the inner ends of the
. 13. In a clutch, the combination with a driving
levers being formed with arcuate seats for the element, a pressure ring rotatable with the driv
ring on one side thereof and the inner ends of ing element, a back plate, a driven element in
said arms being provided with cam faces acting cluding a friction disk extending between the
on the ring in opposition to the seats and tending driving element and the pressure ring, ‘a clutch
75
4
2,126,149`
between the driving element and the pressure
shaft on which the disk is mounted and a throw
ring, clutch shaft on which the driven element
out collar shiftable axially of the clutch shaft;
is mounted and throw-out collar shiftable axially
of-slidably mounted clutch levers slidably press
ing` on the pressure ring and the back plate,` of the clutch shaft, the combination of an annu
lar series of clutch lever elements pressing on the
clutch spring means comprising leaf springs se
cured at their outer ends to the back plate struc
ture and extending radially inwardly, the leaf
pressure ring and the back plate, an annular
series of leaf spring elements pressing on the
springs alternating with the levers, and extend
ing obliquely crosswise of the levers at the inner
back plate and extending inwardly toward the
inner ends of the levers, and a ring located at the
inner ends of the lever and spring elements and 10
interlocked therewith, said lever and spring ele
10 ends of the levers and springs, and means at the
inner ends of the levers andthe springs and
coacting therewith to hold vthe slidably mounted
levers. from displacement and transferring the
15
axial force of the springs to the levers.
14. In a clutch including the usual driving ele
ment, pressure ring rotatable with the driving
element, back plate, driven element extending
ments pressing in opposite axial directions
against the ring, the throw-out collar coasting,
when actuated, to operate the levers against the
spring elements.
CHARLES B. SPASE.
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