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Патент USA US2407322

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SeptylO, 1946.
I
K. MILLER
TWO-WAY
l2,407,319
CLUTCH
y
Filed oct. 144, 1942 '
32
31'
37
'
52
1
41B
63
’
v
2 sheets-sheet;
<
sept. 10, 1946.
K, MILLER
ì
2,407,319
TWO-WAY CLUTCH
Filed Oct. 14, 1942
2 Sheets-Sheet 2
2,407,319
Patented Sept. 10, 1946`
¿_"UNITED STATES PATENT OFFICE .
Kay Miller, Rockford, Ill., assignor to »The Atwood
»
A Vacuum Machine Company, Rockford, Ill., a
copartnership composed of Seth B; Atwood and
J ames> T. Atwood
Application octoberii,1942,`séria1No:i61,960
21 claims'. (c1. 19a-lis)
1
,
This invention relates to friction clutches and
is more~particularly concerned with a new and
i shaft extending rearwardly from the flywheel,
adapted for direct connection with the propeller
shaft orto )be extended into the front end- of
improved two-way clutch especially intended for
the gear box of a transmission, and' I3 is a quill
tank, truck, or the like,- although the invention el surrounding 'the shaft and serving as an auxiliary
driven member, -one of the members I2 and VI3
is suitable for other use_s.' ` '
use with a two-ratetransmission in a tractor,
being, for "example, for high ratio drive and the
other for low' ratio drive. The shaft I2 has the
usual' pilot'bearing I4 supporting the front end
thereof at the; center ofthe ñywheel. lThere are
two clutch disks-I5and I6, the disk I5 having
its center hub I‘I splined'on the front end of the
shaft I2'to transmit ydrive from the flywheel to
the shaft when the disk I5 is engaged, and the
disk- I6 having its hub I8- splined on the front
end- of the quill I3» t'o transmit drive from the
r’The principal object of my invention is to pro
v_icle a friction clutch of the kind mentioned, so
designed that a single spring means is usable to
apply vspring pressure to the pressure plate in
either direction and cooperates with a single
clutch actuating lever' means oscillatable in eitherv
direction from a neutral position by rollers car
ried on _a throw-out collar,
lA» salient feature ofthe present clutch lies in
the provision of a ring attached to the pressure
ñyWhee'l-lto thel quil1`when the disk I6 is-engaged;
~ plate for movement thereof to either of its two
--I9 designates'the usual pads or facings on the
engaged positions,' and two other rings mounted
onN opposite >sides of the first ring and urged
toward each other by the aforesaid single spring
-means, the aforesaid single clutch actuating lever
means beingy operative between these spring
pressed rings to transmit the pressure of the
20
clutch disks,` and a pressure plate 20 is disposed
between these disks, adapted when moved for
wardly to engage disk I5 with the driving face 2|
on the back of the Viiywheel and the companion
driving face 22 on the front of the’pressure plate.
The pressureplate is also movablel rearwardly for
springs tothe pressure plate in either direction,
according to the position of the throw-out collar. 25 engagement with disk I6 to causel engagement
thereof >with the driving face 23 on-the inner side
Another important feature of Vthis clutch con
of the back'plate II and the companion driving
sists in the provision of spaced rollers on the
faceï24’fon the backof the pressure plate. The
throw-_out collar, which in the neutral position
surfaces 2 I-24 are, of course, all accurately ma
of theyclutch actuatinglever engage flat surfaces
on the «lever to hold thesarne positively in a 30 chined on these cast parts =to insure smooth clutch
engagement.A The back plate is bolted to the ily
Wheel by means of its marginal flange portion 25,
neutral position, while allowing a certain amount
of free movement of the throw-out collar in the
neutral zone so as to avoid the disadvantages of
too sensitive, hair trigger, manual control, the
lever being bifurcated to provide diverging arms,
as indicated at 26.l - The pressure plate 20 has
` sliding driving connections with the back plate II
35
at~ circumferentially spaced points around the
periphery` thereof by means of studs 5 fixed on
thel back plate and having the flat side surfaces
thereof slidably engaging the fiat side surfaces
of notches 6 cut in the periphery of the pressure
or the other, according to the direction of move
nient of the throw-out collar.
40 plate. These studs 5 will, of course, transmit
drive tothe pressure plate in both of its engaged
.The invention is illustrated in the accompany
positions, and also turn the pressure plate with
ingdrawings, in which,
y
the iiywhel in the neutral position of said plate.
.f'Figurehv 1 is alongitudinal section through a
Pins '21 are slidably mounted in holes 28 provided
two-way >clutch made in accordance with my
in the pressure plate and registering holes 29 pro
vided in the back plate at circumferentially spaced
` nFig. 2 is a fragmentary view of the clutch of
points'.` Coiled 'compression springs> 30 and 3l
Figfl` partly in rear elevation and -partly in
one for engagement with one of the rollers and
the other for engagementrwith the other of said
rollers for oscillation of the lever in one direction
invention;Y
n
transverse section,
„
and
4
_
'
_
'
-
` are'ïheld‘? caged on each'of the pins 21 on op
corresponding parts throughout the views(
posite >sides of the pressure plate and tend to hold
the pressure plate in the neutral position illus
trated.' `That' is to say, the springs 30 act between
the pinslZ’I and the pressure plate tending to ,n
‘.¿R'eferringto Figs. 1 and 2, the reference nu
:neral -I0 designates the vflywheel of an engine
andi I I~theback plate thereon.v I2- is the driven
resistfmovement’of thev pressure plate toward
the clutch disk ¿I 5,»whereas the springs 3| acting
between the back Plate and the pressure plate
ffFig. 2a is a sectional detail on the line 2a--2a
of YFig. 2.
’
A
f" _The "same vreference numerals are applied to
2,407,319
3
4
tend to resist movement of the pressure plate
to-ward the clutch disk I6, and these opposing
springs are in balanced equilibrium when the
tubular guide 54 provided therefor rigid with and
projecting rearwardly from the back plate II.
The throw-out collar is reciprocable by means
of the anti-friction shifter ring 55, which is usu
The pressure plate 20 has studs 32 mounted on C1 ally provided with trunnions for cooperation
the rim portion thereof in circumferentially
with a yoke or other clutch operating means,
spaced relation,'and these studs are adjustably
not shown. lSp'aced rollers 56 >and 51 are rota
secured to the peripheral flange 33 >of a cupped
tive'ly mounted on the forward end of the throw
sheet metal thrust ring 34 by nuts 35 threaded on
out collar to cooperate with the arms 46 and 41
said studs. Two other sheet metal rings 3'6 and 104 'of the clutch actuating levers 42, respectively,
31 are disposed on opposite sides of the radially
to oscillate the levers in a clockwise direction in
inner portion of the ring 34 and are urged toward
the ‘forward movement of the throw-out collar
pressure plate is in the neutral position.
one another by a single series of coiled compres
land in a counterclockwise direction in the rear
sion springs 33 disposed in circumferentially
spaced relation with respect tothe ring 36, be
. wardmovernent thereof.
Forward movement of
the ycollar 53 is limited by engagement of the
tween the ring 36 and a retaining ring 39. Pins
internal »annular ñange 58 on the collar with
46 slidable in registering holes 4I in the rings 34,
36, and 31 extend through the springs 38> and
thro-ugh holes in the retainer ring 39 and holdthe
parts together with the springs 38 caged under 20
the central hub portion 59 of the back plate.
Reanvard movement of the collar 53 is limited
by engagement of the sleeve with a stop ring 60
a predetermined compression, known as a “pre
secured on the rear end of the tubular guide 54.
load” pressure, so that when the pressure plate
The springs 38 can, therefore„be subjected only
to a predetermined degree of compression. Each
is held engaged under additional compression of
the springs 36, the clutch is engaged under-a de
of the levers 42 is formed so that the arms l46
and 41 extend inwardly in diverging relation.
sired increased spring pressure above »the _“pre 25 Flats 5l and 62 are provided in the crotch por
load” pressure. A single kseries of clutch actuat
tion of the lever between- the arms 46 and 41
ing- _levers 42 Vis `provided in accordance with my
for engagement with the rollers 56 and 51 in
invention operating between the rings 36. and'31
the'neutral position of the lever, whereby posi
to moverthe pressure plate 26 selectively in either
tively to hold the lever in neutral position While
direction and hold it engaged under pressure of
the springs38. The levers '42are disposed in cir
cumferentially spaced _relation relative to the back
30 permitting a certain amount of free movement
plate I I, each being mounted between ay pair of
lugs 43 cast integral with the back plate, the
63, between the flats 6I and 62 forv clearance
purposes, the roller 51 rbeing received in this cut
lugs carrying Ña cross-pin‘44 for pivotal support
. out portion when the throw-out collar is moved
of the throw-out collar 53 in the neutral zone.
The crotch portion is cut away, as indicated at
of the ,lever 42. Each of the levers‘42 has three
forward for engagement of the clutch disk I6,
arms, 45, 46, and 41., The arm 45 is forked and
and the roller 56 being received in this cut-out
hasY a roller 48 rotatably mounted therein on a
portion when the throw-out collar 53 is moved
cross-pin 43, the roller being _received‘in arcuate
to the rear for engagement of the clutch disk
recesses 55 and 5I struck radially in the inner 40 I5.
marginal edge portions of the rings 36 and 31.,
In operation, the clutch is used in conjunction
respectively. The-ring 34 is out away, as indi
usually with a two-rate transmission. The shaft
cated at 52, for reception of the arm 45 and roller
I2 may be connected either- directly through a
46, so that the'lever 42 is free to oscillate in either
universal joint with the propeller shaft of the
direction withrespect tothe ring 34 for actuation
of the clutch. When the lever 4:2 Vis oscillated
in a clockwise direction fromfthe position shown
in Fig. l, the initial movement causes movement
or the pressure platee!) and the three rings> 34,
¿_ tractor, truck, tank, or Yother vehicle, or extended
into the front end of the gear box of a change
speed transmission providing any desired num
ber of speeds for forward and reverse drive. .The
quill I3 for the low ratio drive has a reduction
36, and 31 as a unitary assembly until the clutch
gearing connection with the- shaft I2, and when
disk I6 is packed >between the surfacesu23 and
24, after which the further movement of the
the disk I5 on the shaftv I2 is engaged, the
quill I3 and disk I6 are driven idly through
said reduction gearing connection. On the other
lever42` causes movementY of thering 31 away
from the ring 34, thereby compressing the springs
38 and transmitting this increased spring ypres
hand, when the clutch disk I6 is engaged Vfor
the low ratio drive, the disk -I5 and shaft |12
trough the ring 34 to the pressure plate "
sure
so as to hold the clutch
I6 engaged under
ingl connection mentioned.
heavy spring pressure. When- the lever 42 is
of the throw-out collar 53 by means of a manu
oscillated in a counterclockwise direction from
the position shown in Fig,Y l, the pressure plate
causes engagement of the disk I6 in the manner
26 is moved toward the clutchv disk I5, and
after the .clutch disk is packed between the sur
faces 2l and 22, the ring 3,6 in the further move
ment of the lever 42 is moved away from the
ring 34, thereby compressing the springs 38 so
that increased spring pressure is transmitted
are driven idly by reason of the reduction gear
Forward movement
ally operable clutch pedal or lever (not shown)
previously described. When the throw-out collar
is -moved rearwardly, the disk I5 is engaged in
the manner previously described. The springs
38 in addition to providing resilient engagement
so that close adjustment of the clutch is not
required provide substantially constant pressure
and, accordingly, non-slipping engagement re
through the ring 34 to the pressure plate to keep
the clutch disk I5 engagedY under .heavy spring
pressure. The rings 36 and 31 are both stamped
to channel-shaped cross-section, as indicated,
and the same is true ofv the retainer ring 39,
whereby to reinforce these rings'and make for
maximum' strength and Vrigidity with another
wiserelatively light sheet metal construction.
tral position shown in Fig. l, the springs 30 and
3! keep the pressure plate 20 in a mid-position
H_A ._throwfout Lcollar„.53 , is. reciprocableonv a
leversl in ,neutralpcâìtìon „So that there isunq
gardless of the usual wear on the clutch facings
I5. When the throw-out collar 53 is in the neu
out ofr engagementwith both disks, while -the
rollers 56 and 51 by engagement with the iiats
6I and 62 on the levers 42 positively hold said
6
5
selectively toeither ring` and through the springs
and `support :to îthe pressure plate,- wherebyj to
engage theclutch ’resilientlyin either direction.
likelihood of accidental engagement ofthe-clutch.
¿-On the ,other hand, -when 4the clutch isjen
.gaged, using Yeither-ofthe disks l5 or I6, itis
Alocked up in such condition -by the levers 42
;.under pressure of the springs 31, thus insuring
positive engagement of the clutch.
v ,
'4. A clutch mechanism comprising, in combina
tion, clutch vdisks vconnected .to separate rotary
parts, a'pressure plate shiftable todriving en
Y
gagement selectively with either clutch disk,„_a
It is believed the foregoing description convey
ay good understandinggof theobjects and advan
tages of my invention. „The appended claims
have been drawn to cover all legitimate modi
ñcations and adaptations.
.VIclaimr
.
'
t
,
`
'
support Aconnected in ñxed spaced ,relation to
and turning with the pressure plate, .a pairiof
rings mounted on opposite sides'of the support
in concentric relation with the> pressure plate and
guided on thesupport forlimited axial movement
with respect theretofa plurality of springs in
circumferentially spaced relation tosaid rings
iholding thesame normally in engagement vwith
the»y opposite .sides of said support, and positive
>acting oscillatable clutch actuatingglevers extend
ing between said rings totransmit pressurelse.
.
_
f v1. In a clutch.mechanism,.the vcombination of
clutch disks connected to; separate rotary parts,
a pressure plate shiftable todriving engagement
selectively with either clutch disk, ya support con
nected in ñxed spaced relation to .and turning
with the pressure plate„a pairfof rings mounted
Vlectively to either ring and through the ksprings
onopposite sides of the support in concentric re
lation with the pressure ¿plate and guided on 20 and support to the pressure plate, whereby to
engage the vclutch resiliently in either direction,
`the, support for limited axial movement ywithre
each of said clutch actuating levers> havingtwo
spect thereto, a plurality of ¿springs in circum
arms --extending inwardly in diverging relation,
_ferentially spaced relation to said rings holding i
-the same normally in engagement with'the op
the clutch mechanism including a throw-out col
posite sides of said support, and positive acting 25 lar having two rollers mounted thereon in longi
tudinallyspaced relation with respect thereto, the
means for moving the pressure plate in either
forward roller being arranged for rolling engage.
.direction to engage either clutch disk, said means
rnent with one arm and the rearward roller being
extending between said rings to transmit pres
arranged for rolling engagement lwith the other
sure `s_electivelyto .either ring and through the
springs and support -to the pressure plate, where 30 arm to oscillate >the lever in the reciprocatory
by to engage the clutch resiliently in either di
rection. ,
movement of thethrow-out collar. v
«„ «2, In a clutch mechanism, the combination. of
clutch disks connected toseparate rotary~ parts,
va. pressure platefshiftable to. driving engagement
selectively with either clutch disk, a support con
_
Y,
v r
5; A clutch mechanism comprising, incombi
'
nation, clutch disks _connected` to _ separate I.rotary
parts, a'pressure plate shiftable to driving en.
35
gagenïient-> selectively with _eitherclutch disk, >a
support connected in liixed spaced relation to and
nected in fixed spaced relation to and turning with
the pressure plate, a plurality ofrguide pins slid
turning with the pressure plate, a pair of rings
mounted on opposite sides of the support in con
ably mounted in openingsprovided in the sup
centric relation with the pressure plate and guid
of rings mounted on said pins on oppositev sides
lof said support in concentric relation to the pres
with respect thereto, a plurality of springs incir
' port in circumferentially spaced relation, a pair 40 ed on the ysupport for limited axial movement
cumferentially spaced relation to said rings hold
,sure plate _and guided by said pins for >limited A
axial` movement with respect to the support, a
ing. the same normally in engagement with the
opposite sides of said support, and positive-acting
plurality of springs in circumferentially spaced
relation to ,said rings retained by said ‘pins in
compressed condition holding the rings normally
tween said rings to transmit pressure selectively
oscillatable clutch actuating levers extending be;
Zport, and positive acting means for moving the
to either ring and through the springs and sup
port to the pressure plate, whereby to engage the
clutch resiliently in either direction, each offsaid
V
one arm and the rearward roller being arranged
in` engagement with opposite sides of said sup
pressure plate in either direction to engage either 50 clutch actuating levers having two arms extend
ing .inwardly in diverging relation, the clutch
clutch disk, said means extending between said
mechanism including a throw-out collar having
'rings to transmit pressure selectively to either
two rollers mounted thereon in longitudinally
ring and through the springs and support to the
spaced relation with respect thereto, the forward
pressure plate, whereby to engage the clutch re
roller being arranged> for rollingengagement with
siliently in either direction.
3. In a clutch mechanism, the combination of
for rolling engagement ,with the other arm toros
cillate the lever in the reciprocatory movement
>a pressure plate shiftable to driving engagement
of the throw-out collar, and said lever having hat
_selectively with either clutch disk, a support con
nected in ñxed spaced relation to „ and turning 60 lands thereon _between said arms which are sub
stantially parallel to the axis of rotation of the
»with the pressure plate, two rings disposed on
flywheel in the neutral-position of the lever, said
`opposite sides of said support in concentric re
lands having engagement with the rollers inthe
lation to said pressure plate, Va spring retainer
Íclutch disks connected‘ito separate rotary parts,
ring-in spaced concentric relation to one of said
neutral position of the lever to maintain the le
,with the ring on the opposite side of said sup
port, a plurality of springs in circumferentially
zone.AV
6. A clutch mechanism
v
comprising, in combi
¿extending between .said `rings t0 transmit ,pressure
_mounted .on Opposite,Sidesl Qf. thgsìipportsinßcn:
lrings, l.pins in circumferentially spaced relation 6.5 ver in neutral position while permitting a prede
termined amount of movement of the throw-out
«to said rings and supportslidably mounted on the
_collar independently _of_ the ,lever in the neutral
support and interconnecting the retainer ring
spaced-relation to Vsaid rings and held compressed l7.0 nation, clutch disks connected to separate rotary
parts, a pressure plate shiftable to driving-en
between the retainer ringand the adjacent-ring
gagement selectivelyl with either clutch disk», a
_on the same side ofthe’support, and positive act
support connected in ñxed spaeedrelation to Vand
ing k*means for moving the pressure plate in either
turning with the pressure plate, a pair of .rings
direction to 4engageeither clutch disk, said means
2,407,319
7
8
centric relation with the pressure plate and guid
ed on the support for limited axial movement
`means oscillatably mounted on the back> plate
and extending between said rings to transmit
with respect thereto, a plurality of springs in cir
pressure selectively to either ring and through
cumferentially spaced relation to 'said rings hold
lthe' springs and support t0 the pressure plate,
ing the same normally in engagement with the
opposite sides of said support, and positive acting
whereby to engage Vthe clutch resiliently in either
direction.
‘oscillatable clutchactuating levers extending be
9. In a clutch mechanism, the combination
tween said rings to transmit pressure selectively
with a flywheel constituting the driving element
to either- ring and through the springs and sup
and a back plate in ñxed axially spaced relation
port to the pressure plate, whereby to engage the 10 to the flywheel and turning therewith, of two
clutch resiliently in either directiorneach of said
separate and independent clutch disks between
the flywheel and back plate constituting the driv
clutch actuating levers having two arms extend
ing inwardly in diverging relation, the clutch
' en elements, a pressure plate shiftable to driv
mechanism including a throw-out collar having
means thereon for engagement with either of
said arms to oscillate the lever selectively in either
direction in the reciprocatory movement of the
collar, and said lever having flat lands thereon
between said arms which are substantially paral
lel to the axis of rotation of the ilywheel in the 20
ing engagement selectively with either clutch disk,
spring means for normally holding the pressure
plate in a neutral position out of driving en
gagement with ‘either of said disks, a support
disposed behind the back plate and connected in
fixed spaced relation to and turning with the
pressure plate, a plurality of guide pins slidably
neutral position of the lever, said lands having
mounted in openings provided in the support in
engagement with the means on the collar in the
circumferentially spaced relation, a pair of rings
neutral position of the lever to maintain the 1e
mounted on said pins on oppositelsides of said
ver in neutral position while permitting a pre
support in concentric relation to the pressure
determined amount of movement of the throw
plate and guided by said pins for limited axial
out collar independently of the lever in the neu
movement with respect to the support, a plural
tral zone.
ity of springs in'4 circumferentially spaced rela
7. In a clutch mechanism, the combination
tion to said rings retained by said- pins in com
with a flywheel constituting the driving element
pressed condition holding the rings normally in
and a back plate in ñxed axially spaced relation 30 engagement with opposite sides of said support,
to the ilywheel and turning therewith of two
and' clutch actuating lever means oscillatably
separate and independent clutch disks between
mounted on the back plate and extending be
the ilywheel and back plate constituting the driv
tween said rings to transmit pressure selectively
en elements, a pressure plate shiftable t0 driv
to either ring and through the springs and sup
ing engagement selectively with either clutchdisk,
port to the pressure plate, whereby t0 engage
spring means for normally holding the pressure
the clutch resiliently in either direction.
plate in a neutral position out of driving en
10. In a clutch mechanism, the combination
gagement with either of said disks, a support
with ailywheel constituting the driving element
connected in ñxed spaced relation to and turn
and a back plate in iixed axially spaced relation
ing with the pressure plate, a pair of rings mount 40 to the ilywheel and turning therewith, of two
ed on opposite sides of the support in concen
separate and independent clutch disks between
tric relation with the pressure plate and guided
the flywheel and back plate constituting the driv
on the support for limited axial movement with
>en elements, a pressure plate shiftable to driv
respect thereto, a plurality of springs in circum
ing engagement selectively with either clutch
ferentially spaced relation to said rings holding
disk, `spring means for normally holding the pres
the same normally in engagement with the op
sure plate in a neutral position out of driving
engagement with either of said disks, a support
positelsides 'of said support, and positive acting
means for moving the pressure plate in either
direction to engage either clutch disk, said means
disposed behind the back plate and connected
in iixed spaced relation to and turning with the
extending between said rings to transmit pres
pressure plate, two rings disposed on opposite
-sure >selectively to either ring and through the
springs and support to the pressure plate, where
by tov engage the clutch resiliently in either di
sldes of said support in concentric relation to said
pressure plate, a spring retainer ring in spaced
concentric relation to one of said rings, pins
'rection.
in circumferentially spaced relation to said rings
8. -In a clutch mechanism, the combination with 55 and support slidably mounted on the support and
a ñywheel constituting the driving element vand
interconnecting the retainer ring with the ring
a back plate in fixed axially spaced relation to
on the opposite side of said support, a plurality
the flywheel and turning therewith, of two sep
of springs in circumferentially spaced relation
arate and independent clutch disks between the
to said rings and held compressed between the
flywheel and back plate constituting the driven 60 retainer ring and the adjacent ring on the same
elements, a pressure plate shiftable to driving
side of the support, and clutch actuating lever
engagement selectively with either clutch disk,
means oscillatably mounted on the back plate
spring means for normally holding the pressure
and extending between said rings to transmit
plate in a neutral position'out of driving engage
pressure selectively to either ring and through
ment with either of said disks, a support dis
the springs and -support to the pressure plate,
posed behind the back plate and connected in
whereby to engage the clutch resiliently in either
ñxed spaced relation to and turning with the
direction.
pressure plate, a pair of rings mounted on oppo
11. In a friction clutch comprising a'pressure
site sides of the support in concentric relation
plate for holding the clutch engaged, clutch ac
with the pressure plate and guided on the sup 70 tuating mechanism comprising a support con
port for limited axial movement with respect
nected in fixed spaced relation to and turning with
thereto, a plurality of springs in circumferen
the pressure plate, a pair of rings mounted on
tially spaced relation to said rings holding 'the
opposite -sides of the support in concentric rela
same normally in engagement with the opposite
tion to the pressure plate and guided on the sup'
>sides of said support, and clutch actuating lever 75 port for limited axial movement with respect
2,407,319'
2,9
,
T10
thereto, -a plurality of springs «in'circumferential
ly spaced'relation'f to said rings «holding thelsa'me
normally in engagement with theI oppositesides
of said support, andv positive actingmeans for
ward roller being arranged for rolling engage
moving the pressure plate vto engage the clutch,
_said means extending between said rings to trans
15. In a friction clutch comprising a pressure
plate for holding the clutch engaged, clutch ac
tuating mechanism comprising a support con
mit pressure to one of >said rings and through
the springs and support >to the pressure plate,
whereby to engage the clutch resiliently. ' ' ,
-- A
ï 12. In a friction clutch comprising a pressure
plate lfor holding the clutch engaged, clutch ac
tuating "mechanism comprising a support con
ment with the other arm to oscillate -the lever in
the reciprocatory movement of the throw-out col
lar.
Y
nected in fixed'spaced relation to and turning
with the pressure plate, a pair ofvrings mounted
on opposite sides of the support in concentric
relation to the pressure plate and guided on the
support for limited axial movement with respect
nected in fixed spaced relation to and turning
thereto, a plurality of springs in circumferential
with the' pressure plate, a plurality of guide 'pins
slidably mounted in openings provided in the sup'
, ly spaced relation-to said rings holding the same
port'in circumferentiallyï spaced relation, »af-pair
of rings mounted 'on said pins on opposite sides'
ofthe support in concentrie relation to the pres
sure plate and guided by said pins for limited
axial' movement with respect -to the support, a
plurality o'f 'springs »in circumferentially spaced
relation -vto "said rings retained by said pins inV
compressed condition-holding the >rings normal
ly in engagementwith the opposite sides of'said
support, and positive acting means for moving
the -pressure plate- 'to engage the clutch, said
means extending'v between said ringsto transmit
pressure to «one of said rings vand through the
springs and support to'thev pressure plata-,where
normally inlengagement with ‘the opposite sides of
said support, and positive acting oscillatable'clutch
actuating'l'evers extending between said rings' to'
transmit pressure to 'one of said rings and through'A
the springs and support to the pressure plate,
4 whereby to engage the clutch resiliently, each of
said clutch actuating levers having two arms ex
tending inwardly' in diverging relation," the clutchy
actuating 'mechanism 'including a throw-out col
lar having two'rollers mounted thereon V»in longi
tudinally spaced relation with respect thereto,
the forward roller being arranged for rolling en
gagement with one-arm and the' rearward roller
being arranged for rolling engagement with thev
other arm to oscillatethe'lever in the reciproca
tory movement of the‘throw-out collar, and-said>
30
by to engage the clutch resiliently.
'
lever having flat lands thereon between- saidarms
f 13. Ina, friction clutchyapressure plate fory
holding- the clutch engaged,l clutch >actuating
mechanismk comprising a' support connected -iny
fixed spaced relation to and turning with the
pressure plate, a pair of rings mounted >on `op
posite ysides of the support in concentric relation
to the pressure plate, a spring retainer ring'in
spaced concentric relation to one of said rings,
pins in circumferentially spaced relation-'to said
which are substantially parallel to the axisïcf'
rotation of the flywheel in' _the neutralpos'itio'n
of the lever, said lands having engagement with
the rollers in the neutral position of the'lever to.
maintain the'lever in neutral position' while per
mitting a predetermined amount of movementof
the 'throw-out collar~ independently or the'v reverA
i'n the neutral zone.
v
.
.
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‘ 16. In a friction clutch comprising a pressurerings and support slidably mounted on the sup
plate-for 4l‘iolding the clutch engaged, clutchiac-I
port and interconnecting the retainer ring with
tuating mechanism comprising a support còn'
the ring on the opposite side of said support,
nected in fixed spaced relation'to and turning
a plurality of springs in circumferentially spaced
with the pressure plate, a pair of rings mounted
relation to said rings and held compressed be
tween the retainer ring and the adjacent ring on 45 on opposite sides of the support in concentric
relation to the pressure plate and guided on the
the same side of the support, and positive acting
support for limited axial movement with respect
means for moving the pressure plate to engage
thereto, a plurality of springs in circumferential
the clutch, said means extending between said
ly spaced relation to said rings holding the same
rings to transmit pressure to one of said ringsy
and through the springs and support to the pres 50 normally in engagement with the opposite sides of
said support, and positive acting oscillatable clutch
sure plate, whereby to engage the clutch resil
actuating levers extending between said rings to
iently.
transmit pressure to one of said rings and through
14. In a friction clutch comprising a pressure
the springs and support to the pressure plate,
plate for holding the clutch engaged, clutch ac
tuating mechanism comprising a support con
nected in fixed spaced relation to and turning
with the pressure plate, a pair of rings mounted
on opposite sides of the support in concentric
relation to the pressure plate and guided on the
support for limited axial movement with respect
thereto, a plurality of Vsprings in circumferential
ly spaced relation to said rings holding the same
normally in engagement with the opposite sides of
said support, and positive acting oscillatable clutch
actuating levers extending between said rings to
transmit pressure to one of said rings and through
the springs and supportA to the pressure plate,
whereby to engage the clutch resiliently, each of
said clutch actuating levers having two arms
extending inwardly in diverging relation, the
clutch actuating mechanism including a throw
out collar having two rollers mounted thereon
' whereby to engage the clutch resiliently, each of
said clutch actuating levers having two arms ex
tending inwardly in diverging relation, the clutch
actuating mechanism including a throw-out col
lar having means thereon for engagement with
either of said arms to 'oscillate the lever selec
tively in either direction in the reciprocatory
movement of the collar, and said lever having
fiat lands thereon between said arms which are
substantially parallel to the axis of rotation of
' the flywheel in the neutral position of the le
ver, said lands having engagement with the means
on the collar in the neutral position of the le
ver to maintain the lever in neutral position While
permitting a predetermined amount of move
ment of the throw-out collarV independently of ,
the lever in the neutral zone.
17. In a clutch mechanism, the combination of
clutch disks connected to separate rotary parts,
in longitudinally spaced relation with respect
a pressure plate shiftable to driving engagement
thereto, the forward roller being arranged for
rolling engagement with one arm and the rear 75 selectively with either clutch disk, a thrust ring
2,407,319
11
12
operatively connected with said pressure plate to
directions, _and positive acting means rfor mov
ing one of said spring pressed rings relative to
the other spring pressed ring and thrust ring
move the same in either direction to engage either
disk, a pair of spring pressed rings engaging said
thrust ring to apply spring pressure thereto for
resilient engagement of the clutch'in either di
rection, spring means active on said pair of rings
urging the same in opposite directions, and posi
tive acting means for moving either of said spring
pressed rings relative to the other spring pressed
ring and thrust ring against the action of said
spring means to move the pressure plate in either
direction to engage either clutch disk resiliently
under increased spring pressure.
18. In a clutch mechanism, the combination of
clutch disks connected to separate rotary parts,
a pressure plate shiftable to‘driving engagement
selectively with either clutch disk, spring means
for normally holding the pressure plate in a neu»
tral position out of driving engagement with either
of said disks, a thrust ring operatively connected 20
with said pressure plate to move the same in
against the action of'said spring means to move
the pressure plate to engage thefclutch under in
creased spring pressure.
2'0. In a clutch mechanism, the combination of
clutch disks connected to separate rotary parts,
a pressure plate shiftable to driving engagement
selectively with either clutch disk, a thrust ring
operatively connected with said pressure plate to
move the same in either direction to engage either
disk, a pair of spring pressed rings engaging said
thrust ringto apply spring pressure-thereto for
resilient engagement of the clutch in either di
rection, springV meansl active on said pair of rings
urging the same in opposite directions, a throw
out member reciprocablerelative to the clutch,
and lever means operatively connecting said
throw-out member and said spring pressed rings
to move either spring pressed ring relative to
either direction to engage either disk, e pair _oi
the other spring pressed ring and thrust ring to
spring pressed rings engaging said thrust ring
to apply spring pressure thereto for resilient en
move the pressure plate in either direction t0
engage the clutch resiliently and lockit in either
gagement of the clutch in either direction, spring 25
engaged position.
means active on said pair of rings urging the
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>21. In a friction clutch comprising av pressure
same in opposite directions, and positive acting
plate for holding the clutch engaged, 4clutch ac
means for moving either of said spring pressed
tuating mechanism comprising a thrust ring op
eratively connected with said» pressure plate to
rings relative to` the other spring pressed ring
and thrust ring against the actionvof said spring 30 move the same to engage the clutch, a pair of
spring pressed rings engaging said thrustring to
means to move the pressure plate in either di~
apply spring pressure thereto for resilient en
rection to engage either clutch disk resiliently
under increased spring pressure.- ,
19. In a friction clutch comprising a pressure
plate for holding the clutch engaged, clutch ac- --
tuating mechanism comprising a thrust ring op
eratively connected With'said pressure plate to
move the same to engage the clutch, a pair of
spring pressed rings engaging said thrust ring
to apply spring pressure thereto for resilient en 40
gagement of the clutch, springs means‘active on
said pair of rings urging the same in `opposite
gagement of the clutch, spring means active on
said pair of rings urging. the same in opposite
directions, a throw-out member reciprocable re1
ative to said clutch, and lever means operatively
connecting said throw-out member and said
spring pressed rings so as to permit engagement
of the clutch resiliently and lock the clutch in
engaged position. _
,
KAY MILLER.
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