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Патент USA US2109420

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Feb. '22, 1938.
o. GUERNSEY
2,109,420
CLUTCH CONTROL APPARATUS
Filed July 16, _19z2 '
2 Sheets-Sheet 1
"Feb. ‘22, 1938.
c_. o. GUERNSEY
2,109,420
CLUTCH CONTROL APPARATUS
Filed July 16, 1952 _' ‘
Eye
15
10
11'
2 Sheets-Sheet 2
Patented Feb. 22, 1938
2,109,420
units
PATENT OFFICE
2,109,420
4
CLUTCH CONTROL APPARATUS A,
Charles 0. Guernsey, Yeadon, Pa.
Application July 16, 1932, Serial No. 622,948
23 Claims.
This invention relates to clutch control ap
paratus, and more particularly to means for
automatically controlling the rate of engage
ment of the elements of power-operated clutches
5 by the acceleration or deceleration of one of the
elements.
An important object of the invention is the
provision of apparatus of this character so ar
ranged that the clutch operation is rendered sub
10 stantially entirely automatic, thereby enabling
the same to be properly controlled by unskilled
operators.
A further, and more speci?c, object of the
invention is the provision of means employing
15 the inertia forces generatable as the result of
speed changes in the elements of the clutch for
controlling the operation of automatic clutches,
thereby adapting the clutch for use in the pres
ent day motor vehicle.
These and other objects I attain by the con
struction shown in the accompanying drawings
wherein, for the purpose of illustration, I have
shown a preferred embodiment of my invention
and wherein:
Fig. l is a sectional view partially diagram
matic, showing a clutch control constructed in
accordance with my invention applied to a power
operated clutch;
.
Fig. 2 is a vertical sectional view showing the
clutch control as applied to a centrifugal clutch;
and
Fig. 3 is a section on line 3-—3 of Fig. 2 illus
trating a characteristic spring arrangement for
controlling the inertia element.
Referring now more particularly to Fig. 1 of the
drawings, the numeral l0 generally designates
the driving, and H the driven element of a
clutch, the latter being mounted upon and held
against rotation with relation to a shaft l2 to
40 be driven as, for example, the propeller shaft
of an automobile.
The clutch may be of any
usual or ordinary construction in its general
~ arrangement, being at present shown as includ
ing in the driving element relatively stationary
4-3 and movable plates [3 and I4 adapted to clamp
upon the driven element II and as further in
cluding a housing plate l5 between which and
the movable plate of the driving element are
disposed springs It for urging the movable ele
ment into clamping engagement. This housing
has directed therethrough pins I‘! having heads
[8 operated upon by levers l9 pivoted against
the walls of housing l5 and having associated
therewith the usual anti-rattling springs 20.
In accordance with my invention, as illustrated
(Cl. 192—.01)
in Fig. 1, I provide upon shaft I2 a spline 2|
upon which are mounted collars 22 and 23 hav
ing arranged therebetween a two-part sleeve and
nut generally designated at 24. The collar 22
engages the inner ends of levers 19 through the 5
intermediary of an anti-friction bearing 25. The
other collar 23 is limited in its separation from'
the collar 22 through shoulders 26 and this col
lar operatively engages, through a thrust bear
ing 21, against a rocker arm 28 forming part of 10
an operating train hereinafter more particularly
described. The sleeve and nut 24 comprises an
inner section 29 longitudinally slidable upon the
spline and exteriorly threaded for co-operation
with the outer section 30, which outer section
bears a spaced and relatively heavy rim 3|
constituting an inertia weight. Inertia weight
3| is yieldably held against rotation with relation
to shaft l2 by means of springs, the invention
in the present illustration including two oppo- 20
sitely spirally coiled springs 32 as more clearly
shown in Fig. 3 where a typical inertia weight
construction is illustrated. These springs have
their outer ends outturned and inserted in sock
ets 32a. in the rim 3| and their inner ends an
5
chored in an anchor member 32b stationary with
relation to the driven shaft.
~
In Fig. 1 the apparatus has been illustrated as
the clutch of an internal combustion engine and
the lever arm 28 as actuated through a dia- 30
phragm 33 under direct control of the accelera
tor pedal 34 controlling the speed of the engine.
Any suitable means for energizing the actuator
may be employed, the apparatus at present illus
trated being a connection 35 of the ‘diaphragm M
cylinder with the intake manifold of the engine, 5.
which connection includes a valve 36 operated
by the accelerator pedal. When the accelerator
pedal is elevated to reduce the speed of opera
tion of the engine, a port 361) in valve 36 is 40
brought into alignment with ports in the valve
casing, thereby drawing diaphragm 33 to the
right, due to subatmospheric pressure being de
veloped in the connection to the engine intake
manifold, and moving collar 23 upon the spline
5
2|. Through extensible mechanism 24 this move
ment is imparted to collar 22' and from this
collar to the ?ngers I SLthereby disengaging the
sections of the driving element of the clutch from
the driven element.
.
50
When the speed of operation of the engine is
increased, the vacuum connection is discontinued
and air admitted through port 36a, with the I
result that the springs l6 may act to reengage
the sections of the clutch. If at'this time the 55
2
2,109,420
relative speeds of the driving and driven elements
rate of engagement of the elements by said en
are not identical, or nearly so, the inertia weight
will be displaced with relation to shaft l2 against
the action of springs 32. As a result the sections
of sleeve 24 are relatively rotated and, accord
gaging means.
3. In a clutch control, the combination with
ingly, the sleeve 24 is elongated, increasing the
distance between the collars 22 and 23. Since
collar 23 is positively limited in its movement,
collar 22 is forced into engagement with levers
10 I9, thereby disengaging the sections of the driv
a clutch including driving and driven elements,
means to engage said elements, and a shaft to
which the driven element is secured, of a pair
of abutments on said shaft one of which is mov
able on the shaft and operatively engages the
clutch to effect disengagement of the driving and
driven elements upon separation of the abut 10
ing element ID from the driven element II. The ments, and means to separate said abutments
temporary engagement of the clutch elements responsive to variations in the speed of one of
will, of course, tend to correct the variation in the elements for controlling the rate of engage
speeds and when the clutch is released, springs ment of the elements by said engaging means.
15 32 will again act to restore weight 3| to its nor
4. In a clutch control, the combination with
mal position, thereby permitting the clutch sec
a clutch including driving and driven elements,
tions to again engage. Thus, by a series of en
means to engage said elements, and a shaft to
gagements, the speeds of the driving and driven which the driven element is secured, of a pair
elements are made identical, after which the _ of abutments on said shaft one of which is mov
20 clutch remains in continuous engagement,
able on the shaft and operatively engages the 20
In the form shown in Fig. 2, the invention is clutch to effect disengagement of the driving
illustrated as applied to a centrifugal clutch in and driven elements upon separation of the abut
which the driving clutch element ID has its sta
ments, and inertia-operated means to separate
tionary and moving plates [3 and i4 normally said abutments responsive to variations in the
25 held apart by springs 31. The housing plate 38
of this clutch mounts spring-pressed plungers
39 acting upon the tails of bell crank levers 40
which are pivoted at 4| to the movable plate of
the driving element of the clutch and which
30 have their outer ends formed as weights 42 act~
ing when the clutch attains _a predetermined
speed to apply pressure to the movable plate l4
and cause the engagement of the clutch elements.
The cover plate 38 forms a pivotal support for
levers 43 acting upon-the movable plate through
pins 44, the inner ends of these levers engaging
a movable collar 22a corresponding in function
and position to the collar 22 of the structure of
Fig. l. The extensible mechanism 24a and its
associated parts is, likewise, constructed simi
larly to the structure of Fig. 1, but for the collar
23 a stationary collar 23a is substituted and
clamped upon the shaft l2a rearwardly of the
spline 2| a. It will be obvious that with a struc
ture of this character, when the driving element
of the clutch attains a predetermined speed the
clutch weights 42 will act to engage the sections
of the clutch and so to drive shaft l2a. In this
structure, as in the previous: structure, any dif
50 ference in the speeds of the shaft Ma and of
the driving element of the clutch at the time
of such engagement will result in a movement of
the inertia weight elongating the extensible
mechanism 24a and moving collar 22a to the
left so that the levers 43 are operated to dis;
engage the clutch sections.
Since the structures illustrated are, obviously,
capable of considerable modi?cation without‘de
parting from the spirit of my invention, I do not
60 wish to be understood as limiting myself thereto
except as hereinafter claimed.
I claim:
'
1. In a clutch control, the combination with
a clutch including driving and driven elements,
speed of one of the elements.
means to engage said elements, and a shaft to
which the driven element is secured, of a pair
of abutments on said shaft one of which is mov 30
able on the shaft and operatively engages the
clutch to effect disengagement of the driving and
driven elements upon separation of > the abut
ments, an extensible mechanism between said
abutments, and means responsive to variations
in the speed of one of the elements for extend~
ing said extensible mechanism.
6. In a clutch control, the combination with a
clutch including driving and driven elements,
means to engage said elements, and a shaft to 40
which the driven element is secured, of a pair of
abutments on said shaft one of which is mov
able on the shaft and operatively engages the
clutch to effect disengagement of the driving and
driven elements upon separation of the abut
ments, an extensible mechanism between said
abutments, and inertia-operated means respon
sive to variations in the speed of one of the ele
ments for extending said extensible mechanism.
7. In a clutch control, the combination with 50
a clutch including driving and driven elements,
means to engage said elements, and a shaft to
which the driven element is secured, of a pair of
abutments on said shaft, said abutments being,
held against relative rotation and being longitu 55
dinally movable upon the shaft, one of said abut
ments operatively engaging the clutch to effect
disengagement of the driving and driven ele
ments upon separation of said abutments, an
extensible mechanism between the abutments, 60
power-operated means to move the other of the
abutments and inertia-operated means for elon
gating said extensible mechanism.
8. In a clutch control and in combination with
termined speed of the driving element, of means
responsive to variations in the speed of one of
the elements for controlling the rate of engage
ment of the elements by said engaging means.
a clutch including driving and driven elements,
centrifugally-operated means for connecting said
elements at a predetermined speed of the driving
element and inertia-operated means for control
ling the rate of such engagement.
2. In a clutch control, the combination with
a clutch including driving and driven elements,
a clutch including driving and driven elements,
and means to engage said elements at a prede
means to engage said elements at a predeter
termined speed of the driving element, of inertia
mined speed of the driving element, a shaft
driven by the driven element, an extensible mech
and means to engage said elements at a prede
operated means responsive to variations in the
75 speed of one of the elements for controlling the
25
5. In a clutch control, the combination with
a clutch including driving and driven elements,
9. In a clutch control and in combination with
7.0
anism surrounding said shaft, inertia-operated 75
3
2,109,420
means for extending said mechanism, and means
for disconnecting the-clutch upon extension of
said mechanism.
10. In a clutch control, the combination with
a clutch including driving and driven elements,
‘means to engage said elements at a predeter
mined speed of the driving element and a shaft
to which the driven element is secured, of a pair
of abutments on said shaft, one of which is mov
10 able on the shaft and operatively engages the
ments, an extensible mechanism between said -
abutments, and inertia-operated means respon
sive to variations in the speed of one of the ele
ments for extending said extensible mechanism,
the means to engage said elements comprising
power-operated means for shifting the other of
said abutments upon the shaft.
15. In a.clutch control, the combination with
a clutch including driving and driven elements,
means to engage said elements, and a shaft to 10
clutch to e?ect disengagement of the driving and ‘which the driven element is secured, of a pair
driven elements upon separation of the abut
‘of abutments on said shaft one of which is mov
ments, an extensible mechanism between said able on- the shaft and operatively engages the
abutments, comprising a two-part sleeve one of clutch to effect disengagement of the driving and
15 said parts being splined to said shaft, the other of ' driven elements upon separation of the abut 15
the parts having threaded engagement with the ments, and inertia-operated means to separate
?rst-named part andhaving a projecting ?ange said abutments responsive to variations in the
provided with a peripheral inertia weight and speed of one of the elements, the means to engage spring means to maintain said inertia weight in said elements comprising power-operated means
20 yieldably ?xed relation to the shaft.
for shifting the other of said abutments upon 20
11. In a clutch control, the combination ‘with
a clutch including driving and ‘driven elements,
means to engage said elements at a predeter
mined speed of the driving element, and a shaft
25 to which the driven element is secured, of a pair
of abutments on said shaft one of which is mov
able on the shaft and operatively engages the
clutch to e?ect disengagement of the driving and
driven elements upon separation of the abut
30 ments, an extensible mechanism between said
abutments, and means responsive to variations
in the speed of one of the elements for extend
ing said extensible mechanism, the other of said
35
abutments being ?xed upon the shaft.
12, In a clutch control, the combination with
a clutch including driving and driven elements,
means to engage said elements at a predeter
’ mined speed of the driving element and a shaft
to which the driven element is secured, of a pair
40 of abutments on said shaft, one of which is mov
able on the shaft and operatively engages the
clutch to ‘ e?ect disengagement of the driving
and driven elements upon separation of the abut
ments, and extensible mechanism between said
45 abutments, comprising a two-part sleeve one of
said parts being splined to said shaft, the other
of the parts having threaded engagement with
the ?rst-named part and having a projecting
?ange provided with a peripheral inertia weight
50 and spring means to maintain said inertia weight
in yieldably ?xed relation to the shaft,_the other
of said abutments being ?xed upon the shaft.
13. In a clutch control, the combination with a
clutch including driving and driven elements,
55 means to engage said elements at a predeter
the shaft.
'
‘
~
16. In a clutch control, the combination with
a clutch including driving and driven elements,
means to engage said elements, and a shaft to
which the driven element is secured, of a pair
of abutments on said shaft one of which is mov
able on the shaft and operatively engages the
clutch to effect disengagement of the driving and
driven elements, upon separation of the abut
ments, an extensible .mechanism between said 30
abutments, “and means responsive to variations in
the speed of one of the elements for extending
said extensible mechanism, the means to engage
said elements comprising power-operated means
for shifting the other of said abutments upon the 35
shaft.
.
’
17. In a clutch control, the combination of a
friction clutch having driving and driven ele
ments with power-operated means 'for engaging
and disengaging said elements, and inertia op
erated means acting directly on one of the ele
‘ments for controlling the rate of such engage
ment.‘
,
18. In a clutch control,'the combination of a
friction clutch having driving and driven ele 45
ments and means to engage said elements, with
means responsive to} a change in speed of one
of said elements and acting directly on one of
the elements for determining the rate of engage
ment of said elements.
,
19. In a clutch control and in combination with
50
a clutch including driving and driven elements,
centrifugally-operated means for connecting said
elements at a predetermined speed of the driving
element, and inertia-operated means acting
55
mined speed of the driving element, and a shaft directly on one of said elements for controlling
‘
to which the driven element is secured, of a pair the rate of such engagement,
20. In a clutch control and in combination
of abutments on said shaft one of which is mov
able on the shaft and operatively engages the vwith a clutch including driving and driven ele
60 clutch to effect disengagement of the driving and ments, means to engage said elements, a shaft 60
driven by the driven element, an extensible mech
driven elements upon separation of the abut
ments, an extensible mechanism between said anism surrounding said shaft, inertia-operated
means for extending said mechanism, and means
abutments, and inertia-operated means respon
for disconnecting the clutch upon extension of
sive to variations in the speed of one of the ele
65 ments for extending said extensible mechanism, _
the other of said abutments being ?xed upon the
shaft.
14. In a clutch control, the combination with a
said mechanism.
_
21. In a clutch control, the combination with a
65
clutch including driving and driven elements,
means to engage said elements and a shaft to
clutch including driving and driven "elements, which the driven element is secured, of a pair of
70 means to engage said elements, and a shaft to ' abutments on said shaft, one of which is movable 70
which the driven element is secured, of a pair on the shaft and operatively engages the clutch
to effect disengagement of the driving and driven
of abutments on said shaft one of which is mov
able on the shaft and operatively engages the elements upon separation .of the abutments, an
clutch to effect disengagement of the driving and extensible mechanism between said abutments,
comprising a two-part sleeve one of said parts 75
75 driven elements upon separation of the abut
4
2,109,420
being splined to said shaft, the other of the parts
having threaded engagement with the first
named part and having a projecting ?ange pro
vided with a peripheral inertia weight and spring
means to maintain said inertia weight in yieldably
?xed relation to the vshaft.
'
22. In a. clutch control, the combination with
a clutch including driving and driven elements,
means to engage said elements and a shaft to
10 which the driven element is secured, of a pair of
abutments on said shaft one of which is movable
on the shaft and operatively engages the clutch
to effect disengagement of the driving and driven
elements upon separation of the abutments, an
16 extensible mechanism between said abutments,
and means responsive to variations in the speed
of one of the elements for extending said ex
tensible mechanism, the other of said abutments
being ?xed upon‘ the shaft.
23. In a clutch control, the combination with a
clutch including driving and driven elements,
means to engage said elements and a shaft to
which the driven element is secured, of a pair of
abutments on said shaft one of which is movable
on the shaft and operatively engages the clutch
to effect disengagement of the driving and driven
elements upon separation of the abutments, an 10
extensible mechanism between said abutments,
and inertia-operated means responsive to varia
tions in the speed of one of the elements for ex
tending said extensible mechanism, the other of
said abutments being ?xed upon the shaft.
CHARLES O. GUERNSEY.
15
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