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Патент USA US2057559

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Oct. 13, 1936.
J_ DE BACKER
2,057,559
MULTIPLE CLUTCH DEVICE
Filed May 6, 1935
4 Sheets-Sheet 1
0chl3, 1936.
J_ DE BACKER
2,057,559
MULTIPLE CLUTCH DEVICE
Filed May 6, 1935
4 Sheets-Sheet 2
I23. 2.
Inventor:
dam
E!
l
'
.
i
’
Oct. 13, 1936.
2,057,559
__|_ DE BACKER
MULTIPLE CLUTCH DEVICE
Filed May 6, 1935
4 Sheets-Sheet 3
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'
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29
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Oct. 13, 1936.
J, DE BACKER
1
2,057,559
MULTIPLE CLUTCH DEVICE
Filed May 6, 1935
4 Sheets-Sheet 4
aa' lee’
atented Oct. ‘is, 19316
' 2,057,559 '
STATES. PATENT‘ OFFICE
2,087,550 a
‘
.
swamps cw'ron nnvrca
Joseph de 1mm, coolant-men, Belgium
Application May 8, 1335, Serial No. 20,071
‘
.
In Belgium May 11, 1934
'
(
.
5 Claims. (Cl. 192-418)
The present invention relateato a multiple
clutch applicable to any kind of engine for suc
cessively driving a plurality of concentric shafts.
and composed of a ‘plurality of individual undis
5 tinct clutches‘ having a common release sleeve.
According to the invention, each of .the indi
vidual clutches comprises a drum in which are
positioned a driven plate, carried by one of the
concentric shafts, and a pressure‘ plate, and the
10 drums are, connected tov each other and are to
gether connected to the ?ywheel of the engine,
the pressure plate of each individual clutch be
ing connected to springs and to levers ‘by means
i of rods.
sequently, the accompanying drawings. illustrate
by way of example, a multiple clutch composed
oi.’v three individual clutches and designed for
driving three concentric shafts such as described
in United States Patent No. 1,814,297. vIn the 5
said patent, thev concentric shafts bear the same
‘ reference numbers i, I8 and 33'as in the accom
panying drawings. In these drawings-4
Fig. l is a view of the multiple clutch from the
cover side, the release sleeve being removed.
'10
Fig. 2 is a longitudinal section on the line 2-2
of Fig. 1.
~
Fig. 3 is a longitudinal section on the line 3-3
A common release sleeve acting upon ' up to the centre 0 of "Fig. 1 and displaced by 40° ‘
15 said levers is provided .with longitudinal cams
comprising slopes cut between successive pairs
from the section on the line 3-2.
15
r Fig. 4 is a longitudinal section on-the line 4-4
of transverse planes in such a way that the slopes.
of the cams corresponding to the levers of one
and the same individual clutch extend between
up to the centre 3 of Fig. l, and displaced by 80°
a lever.
for connecting therods to the pressure plates.
By this combination, a multiple clutch is ob
tained in which the release sleeve successively
modi?ed arrangements of the levers, the rocker"
from the section .on the line 2-2.
_
Fig. 5 is a front view of the release sleeve of
20 the same pair of transversal planes, so that the . the multiple clutch.
20
longitudinal cams can successively operate, or
Fig. 5a is a side elevation of the release sleeve
put out of action, the levers of the individual
of Fig
the multiple
6 illustrates
clutch;
the movement of the levers,
clutches, in order to disengage or engage suc
_ cessively the driven plates when the release sleeve the rocker levers and the cams of the release
25 is moved longitudinallyin one or the other di
sleeve.
_
.
25
‘ ‘motion, for instance, with the aid of a pedal or
Figs. '7 and ‘la-show, by way of example, means
'
30 disengages the concentric shafts from the fly
wheel of the engine without communicating fur
ther movement to the individual clutches already
disengaged while it disengages the following one,
and without being further subjected to the pres
35 sure of the springs of the individual clutches al
'
Figs. 8 and 9 show, by way of example, two .
levers and the cams of the release sleeve.
-
13 and the hollow shaft 33 form three concen
tric shafts. The shaft I carries, on splines. a
driven plate 2; the hollow shaft l9 carries;v on
splines, a driven plate 3 and the hollow shaft 33 35 ‘
ready-disengaged, and in which the release sleeve
carries, likewise on splines, a driven plate 4.
successively engages the concentric shafts with
the ?ywheel of the engine without communicat
ing any further .movement to the individual
40 clutches already engaged while it engages the
Pressure plates 5, 6 and 1 correspond tothe
driven plates 2,3 and 4 respectively. ‘The driv
following one, and without being subjected to
the pressure of the springs of the individual
clutches still to be engaged.
.
The’combination according ‘to the invention
45 makes it possible to construct, according to the
intended use, a multiple clutch which may be
composed of a variable number of distinct clutches
in accordance with the number of concentric
shafts to be successively driven.
50
'
The multiple clutch described in the present
speci?cation is particularly applicable to the
change-speed device forming the subject of the
United States Patent No. 1,814,297. In this
change-speed device, the concentric shafts to be
55 successively driven are three in number. Con
30
In the drawings, the shaft l, the hollow, shaft
en plate {and the pressure plate I! are 'posi—
tioned in a drum v8 which is connected to the 40
?ywheel ll of the engine; the driven plate 3
and the pressure plate 6 are positioned in a
drum 9 which is connected to the drum 3, and
the ‘driven plate 4 and the pressure plate ‘I are
positioned in a drum l0 which is connected to 45
the drum 9. The drums 8, 3 and iii are together
fixed to the ?ywheel II and are closed by a cover
Rods l3,‘ l4 and i5, each of which ‘being three
in number, are‘disposed'over the circumference
of the clutches, but outside the circumference
of the driven plates 2, 3 and 8.
The rods i3 are connected by suitable con
necting means to the pressure plate 5, and sim
ilarly, the rods it are connected to the pressure 55
.2
2,057,559
plate 6, and the rods I5 to the pressure plate ‘I.
The rods I3, I4 and I5 are arranged upon'thelr
respective pressure plates at spaces of 120° from
each other and, all taken together, they are dis
posed at spaces of 40° from each other irrespec
tive of the pressure plate to which they belong.
The means for connecting the rods I3, I4 and
I5 with the pressure plates 5, 6 and ‘I respec
tively may, for instance, consist of collars g with
which the rods I3, I4 and I5 are provided and
which engage in slots it formed in the circum
ference of the pressure plates 5, 6 and ‘I, as
shown in Figs. 7 and 7a, or they may consist of
any other suitable means.
a
The cams 28, 29 and 30 form between them
selves splines on the sleeve 24 and ?t in the cor
responding slots of the hub 25. In this way, the
sleeve 24 is prevented from rotating in the hub
25. A spring 21, located between the hub 25
and the sleeve 24, exerts the return pressure
upon said sleeve 24. The latter is‘ furthermore
provided with a release bearing 3I,- through the
medium of which a throw-out fork 32 can move
this sleeve in a longitudinal stroke. The fork 32 10
in turn can be operated by a clutch pedal or
lever (not shown) or by any, suitable operating '
systems, such as pneumatic, hydraulic, electrical,
depression systems or others.
The stroke of the sleeve 24 is in one direction
A clutch spring I6 is mounted upon each of
the rods I3, I4 and I5. The springs I6 bear . divided into three successive clutching periods
against the drum 9 and exert their pressure and, in the opposite direction, into three sim
_ upon the rods I3, I4 and I5, for‘instance, by ilar successive periods of disengagement, each
means of a washer 1' held in position by a pint. of which corresponds to one-third of the total
20 The springs I6 mounted upon the rods I3 thus stroke of the sleeve 24. The clutch pedal or
lever or any other operating system (not shown)
exert pressure upon the pressure-plate 5; like
which causes the sleeve 24 to move, will in turn
wise, the springs I6 of the rods I4 exert pres
sure upon the pressure plate 6 and the springs likewise assume three successive clutching posi
tions in one direction, and three successive po
I6 of the rods I5 exert pressure upon the pres
sitions of disengagement in the opposite direc
'
25 sure plate ‘I.
'
'
Levers I‘I, I8 and 29, each of which being three tion.
In Figs. 2, 3 and 4, the sleeve 24 is shown at the
in number, are disposed radially upon the cover
I2 and can oscillate upon the latter. Each lever end of its clutching stroke and the rocker-levers
I1 corresponds to a rod I3, each lever I8 to a 2I, 22 and 23 contact at their under ends with
rod
I4 and each lever 28 to a rod l5. The levers the annular portion 26 of the sleeve. All the
30
I1, I8 and 29 bear at their outer ends against
individual clutches are thus in the position of en
their respective rods I3, I4 and I5, for instance,
by means of an adjustable stop It mounted upon
gagement.
each of said rods. ‘
25 '
Rocker-levers 2|, 22, and 23, each of which
being three in number, are likewise disposed ra
dially upon the cover I2 and can rock upon ‘the
same. Each rocker-lever 2I corresponds to a
lever I‘I, each rockerilever 22 to a lever I8, and
40 each rocker-lever 23 to a lever 29.
45
The rocker
20
25
30
.
When the sleeve 24 is moved by the ?rst third
of its disengaging stroke, the earns 30 of the ~
sleeve cause the rocker-levers 23 to rock and the
latter cause the levers 26 to oscillate according
to‘the movement illustrated in Fig. 6. The levers
28 pull the rods I5 back and thelatter throw the
pressure plate ‘I out of clutching.
The driven '
plate 4 and the hollow shaft 33 are thus released. 40
The pressure exerted by the springs I6 of this
levers 2|, 22 and 23*_ bear at their upper ends
against the inner ends of the respective levers ‘ individual clutch upon‘the sleeve 24, through the
medium of the rods I5, the levers 20 and the
I‘I, I8 and '26.
rockerélevers .23, which, pressure was acting
A hub 25 is provided on the cover l2 and com
prises slots correspondingeach to a rocker-lever axially in the direction of the arrow 2 at the 45
moment of disengagement, is transformed, after
2I, 22 and 23.
'
'
'
A sleeve 24 is supported in the hub 25 and is
longitudinally movable but cannot rotate in the
hub 25.
The sleeve 24 is provided with an an
50 nular portion 26 and with longitudinal cams 28,
29 and 30, which are three in number‘ each.
The cams 28 comprise, towards the annular
' portion'26 of the sleeve 24, slopes which are cut
55
_
15
between transverse planes 11-1) and a'—b', the
plane a-b comprising the tops, and the plane
a'--b’ comprising the bases of the said slopes.
the de-clutching movement, into a radial pres
sure in the direction of the arrow 2' and is thus
practically inactive (Fig. 6) .
As the slopes of cams 29 and 28 extend be
'50
tween ,transverse planes situated behind. the
transverse planes of the slopes of the cams 36, the
sleeve 24 has not communicated any movement to
the individual clutches of the shafts I9 and I,
which have therefore remainded in engagement. 55
When the sleeve 24 is moved by a second third
Likewise, the cams 29 comprise, towards the an-. \ of its de-clutching stroke, the cams 29 of the
nular portion 26, slopes cut between a transverse
top plane 0-11 and a transverse base plane c‘
60 d', and the cams 39 comprise slopes out between
a transverse top plane e—f and a transverse
base plane e'—-f’. The plane P‘! of the tops
of the slopes‘ of cams 39 is situated before the
plane c'--d' of the bases of the slopes of cams
29, and likewise, the top plane c-d of the slopes
of earns 29 is situated before the base plane a'
b’ of the slopes of cams 28. The interspace be
tween the planes a—b and a'—b', the planes
c—d and c'—d’, and the planes c—! and e'—/'
70 is determinated by the ratio between the desired
height of the cams 28, 29 and 39 and the suit
able inclination of the slopes of said cams. Each
cam 28 corresponds to a‘ rocker-lever 2I, each
cam 29 to a rocker-lever 22 and each cam 36 to
a rocker-lever 23. '3
-
sleeve cause the rocker-levers 22 to rock and the
latter cause the levers I8 to oscillate, likewise as
illustrated in Fig. 6. The levers I8 pull the rods 60
I4 back and the latter throw the pressure plate 6
out 'of clutching. The driven plate 3 and the
hollow shaft I9 are thus released. The pressure
exerted by the springs I6 of this individual clutch
upon the sleeve 24 through the medium of the 65
rods I4, the levers I8 and the rocker-levers 22,
which pressure, at the moment of disengagement,
acted axially upon the sleeve ‘24 in the direction
of the arrow e is transformed, after the de-clutch
ing movement, into a radial pressure according 70
to the arrow 2', and is thus practically inactive
(Fig. 6). The cam 36 have slid during this
movement below the rocker-levers 23, and" the
sleeve '24 has not communicated any further
movement to the individual clutchof the hollow v75
3
‘ 2,057,559
shaft 33, so that this clutch remains disengaged trated ‘in the drawings, three groups of members,
, and the sleeve is not subjected to the pressure
' of its springs l6. 'As the slopes of cams 28 extend
between transverse planes behind the transverse
planes of the slopes of the cams 29, the sleeve 24
has not communicated any movement to the in‘
dividual clutch of the shaft I, which has remained
in engagement.
,
.
‘
When the sleeve 24 is moved bythe last third of
10 its de-clutching stroke, the cams 28 of this sleeve
15.
cause the rocker-levers 2| to rock, and the latter
‘cause the levers I’! to oscillate, again as illustrated
in Fig. 6. The levers I‘l pull the rods l3 back, and
the latter throw the- pressure plate 5 out of clutch-'
ing, The driven plate 2 and the shaft l are thus
released. The pressure exerted by the springs l6
of this individual clutch upon the sleeve 24
through the medium of the rods I3, the levers
l1 and the rocker-levers 2 I, which pressure, at the
moment of disengagement, acted axially in the
each group comprising a rod, a lever, a rocker
lever and a longitudinal cam, are provided for
each individual clutch and are disposed at spaces
of 120° with respect to each other; all taken to
gether, they are disposed at spaces of 40° from
each other for the whole of the three individual
clutches. It is obvious that any number, other
than, three, of such groups of corresponding mem
bers can be provided and that they can ;‘be ar~
ranged at suitable spaces of degrees with respect
to each other, both for each individual clutch and
for the whole of the multiple clutch, without de-'
parting from the scope of the present invention.
As has been stated in the characteristics of the 15
invention, the multiple clutch can be arranged
by the described mechanisms for driving more or
less than three concentric shafts, according to
the purpose for which the device is to be used.
For that purpose, each shaft comprises, as de
direction of the arrow z is likewise transformed - scribed, an individual clutch, and the individual
, into a radial pressure in the direction of the arrow clutches, the drums of which being connected to,
z’ after the disengagement and is thus practically
inactive (Fig. 6). The cams 30 and 29 have slid
25 during this movement of de-clutching, below the
respective rocker-levers 23 and 22 and the sleeve
24 has not communicated any further movement
to the individual clutches of shafts 33 and i9,
thus maintaining these clutches disengaged and
30 without being subjected to the pressure of their
springs Hi. The multiple clutch is now com
pletely disengaged.
I clutches, first of the shaft i, then of the hollow
‘ shaft l9 and ?nally of the hollow shaft 33, with
out the sleeve 24 communicating any further
40 movement to the individual clutches already en
55
60
and a rocker-lever, are arranged as has likewise
been described, and are disposed at suitable spaces
of degrees with respect to each other, both as re
’ga'rds each individual clutch, and as regards the 30
entity of the multiple clutch; the longitudinal
able number and are arranged at suitable spaces
of degrees with respect to each other and com
prise slopes cut between as many successive pairs 35
of transverse planes, as there are individual
clutches, so that the longitudinal cams corre
sponding to the rocker-levers of one and the same
individual clutch, comprise slopes extending be
40
tween the same pair of transverse planes.
Having‘ thus described my invention, what I
gaged, whilst engaging the following one, and
without the sleeve being subjected to the pressure
claim as new and desire to secure by Letters Pat
of the springs I6 of the individual clutch or .
ent is:
clutches still to be engaged.
50
?ywheel of the engine, are provided as many times
as there are shafts to be driven; the groups of
members, each group comprising a rod, a lever
cams of the release sleeve are provided in a suit
During the oppositely directed stroke of the
sleeve 24 in three similar successive periods of
35 clutching, the longitudinal cams of the sleeve 24
successively release the levers of the individual
45
each other and being connected together to the
\
-
-
>
_
1. In a multiple clutch device, in combination,
The multiple clutch can be carried into practice a plurality of individual clutches for driving a 45
with other arrangements of the levers, rocker
plurality of concentric shafts, each clutch com
levers and longitudinal cams on the release sleeve, prising a drum, a driven plate and a pressure plate
whilst still maintaining the use of the combina
positioned in the drum, the said drums connected
tion according to the present invention. By way to each other and together to the ?ywheel of the
of example, Fig. 8 represents a different disposi
engine, and the said driven plates each carried by 50
tion of the longitudinal cams of the release sleeve. 'one of the concentric shafts, a cover on the drums,
In this ?gure, the rocker-levers p replace the ' levers for each individual clutch disposed radially
rocker-levers 2|, 22 and 23, and the longitudinal upon the cover, springs for each individual clutch
cams q replace the cams 28,v 29 and 30. The bearing on the ?ywheel, rods for each individual
rocker-levers p are arranged like the rocker-levers clutch disposed over they circumference of the 55
2|, 22 and 23, but the cams q are reversedly ar
multiple clutch for connecting thelevers to their
ranged upon the sleeve 25, and consequently, the pressure plate and for exerting the pressure of the
directions 01’ the clutching and' de-clutching springs upon them, a common release sleeve com
strokes of the sleeve 24 are opposite to those in prising an annular portion and. longitudinal cams,
the arrangement according to Figs. 1 to 6.
the said longitudinal cams being provided, to 60
_ Fig. 9 represents, likewise by way of example, a
di?erent arrangement of the groups of members,
wards the annular portion, with slopes out be
tween successive pairs of transverse planes, the
slopes of the cams corresponding to the levers of
each group ‘comprising a lever, a rocker-lever and
a longitudinal cam. In this ?gure, the lever l one and the same individual clutch extending
65 which replaces a lever I1, I 8 or 20, oscillates about .between the same pair of transverse planes, for
its outer end and bears against a rod l3, l4 or id successively actuating or releasing the levers of
at an intermediate point. The longitudinal cams the individual clutches, when the sleeve is moved
m, which replace the cams 28,19 and 30, and the longitudinally in one or the other direction.
rocker-levers n which replace the rocker-levers
2. In a multiple clutch device,‘ in combination,
70 2|, 22 and 23 are likewise inversed. Consequently, a plurality of individual clutches for driving a 70
the directions of the de-clutching and clutching plurality of concentric shafts, each clutch com
strokes of ‘the sleeve 25 are again opposite to prising a drum, a driven plate and a pressure
those of the sleeve in the arrangement shown in plate positioned in the drum, the said drums con- ~
Figs. 1 to 6.
75
‘ i
.In the multiple clutch as described and illus
nected to each other and together to the flywheel
of - the engine, and the said driven plates each 75
2,057,559
plate positioned in the drum, the said drums con
nected to eachother and together to the ?ywheel
carried by one of the concentric shafts, a cover on
the drums, levers for each individual clutch dis
posed radially upon the cover, springs for each
individual clutch bearing on the ?ywheel, rods for
each individual clutch» disposed'over the circum
ference of the multiple clutch for connecting the
levers to their pressure plate and for exerting the
of the engine, and the said driven plates each
carried by one of the concentric shafts, a cover
on the drums, levers for each individual clutch
pressure of the springs upon them, a common re
for each individual clutch disposed over the ciré
lease sleeve comprising an‘annular portion and
cumference of the multiple clutch for connecting
the levers to their pressure plate and for exert 10
ing the pressure of the springs upon them, a com
10 longitudinal cams, the said longitudinal cams be
ing provided, towards the annular portion, with
slopes cut between successive‘ pairs of transverse
planes, the vslopes of the cams corresponding to
the levers of one and the same-individual clutch
15 extending between the same pair of transverse
planes, for successively ‘actuating the levers of the
individual clutches in order to disengage succes-.
sively the individual clutches, without communi
cating further movement to the levers of the indi
20 vidual clutches already disengaged while actuat
ing the levers of the following one.
3. In a multiple clutch device, in combination,
a plurality of individual clutches‘ for driving a
plurality of concentric shafts, each clutch com
25 prising a drum, a driven plate and a pressure plate
positioned in the drum, the said drums connected
to each other and together to the ?ywheel of the
engine, and the said driven plates“ each carried
by one of the concentric shafts, a cover on the
disposed radially'upon the cover, springs for 'each
individual clutch bearing on the ?ywheel, rods
mon release sleeve comprising an annular por
tion and longitudinal cams, the said longitudinal
oams' being provided, towards the annular por
tion, with slopes out between successive pairs of 15
transverse planes‘, the slopes of the cams corre
sponding to the levers of one ‘and the same indi;
vidual clutch extending between the same pair of
transverse planes, for successively releasing the
levers of the individual clutches in order to en
20
gage successively' theindividual clutches, with
out communicating further movement to the
levers of the individual clutches already engaged
while releasing the levers of the following one.
5. In a multiple clutch device, in combination, a 25
plurality of» individual clutches for driving a plu
rality of._concentric shafts, each clutch compris
ing a drum, a driven plate and a pressure plate
positioned in the drum, the said drums connected
drums, levers for each individual clutch disposed "to each other and together to the ?ywheel of the 30
radially upon the cover, springs for each individ
7 engine, and the said driven plates each carried
ual clutch bearing on the ?ywheel, rods for each -by one of the concentric shafts, a cover on the ,
individual clutch disposed over the circumference drums, levers for each individual clutch disposed
of the multiple clutch for connecting the levers
35 to their’pressure plate and for exerting the pres
sure of the springs upon them, a common release
radially upon the cover, springs for each indi
vidual clutch bearing on the ?ywheel, rods for
each individual clutch disposed over the circum
sleeve comprising an annular portion and longi ference of the multiple clutch for connecting the ‘
tudinal cams, the said longitudinal cams being levers to their pressure plate‘and for exerting the
provided, towards the annular portion, with slopes pressure of the springs upon them, a common re
out between successive pairs of transverse planes, lease sleeve comprising an annular portion and
the slopes of the cams corresponding to the levers longitudinal cams, the said longitudinal cams be:
of one and the same individual clutch extending ing provided, towards the annular portion, with
between the same pair of transverse planes for slopes out between successive pairs of transverse
successively actuating the levers of the individual planes, the slopes of the cams corresponding to
45 clutches in order to disengage successively the
individual clutches, without being subjected to
the levers of one and the same individual clutch 45
extending between the same pair of transverse ‘
4. In a multiple clutch device, in combination,
planes, for successively releasing the levers of the
individual clutches in order to engage successively
the individual clutches, without being subjected
60 a plurality of individual clutches for driving a
to the pressure of the springs of the individual
the pressure of the springs of the individual
clutches already disengaged.
plurality of concentric shafts, each clutch com
prising a drum, a driven plate and a pressure
clutches still to be engaged.
,7
JOSEPH DE BACKER.‘
50.
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