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Патент USA US2096438

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Oct. 19, 1937.
E. A. ROCKWELL
.
2,096,438
AUTOMATICALLY CONTROLLED FREEWHEEL DEVICE
Filed Aug. 16, 1935-
2 Sheets-Sheet 1
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as 24
25
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21
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INVENTOR
F/yj
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Edward A?ockwel .
I
BY
Maw
ATTORNEY
Oct. 19, 1937.
2,096,438
E. A. ROCKWELL
AUTOMATICALLY CONTROLLED FREEWHEEL DEVICE
Filed Aug. 16, 1933
2 Sheets-Sheet 2
INVENTOR
BY Edward ARoc/rwell.
;
2
:
~ :
ATTORNEY
2,096,438
Patented ‘Oct. 19,- 1937
UNITED STATES PATIENT OFFICE
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Edward A. Rockwell, Chicago, Ill.) uiimr, by
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meme assignments, to General Auto Parts 001'
pora'tion, a corporation of Delaware
'
Application August 16, 1933, Serial No. 685,409
' 14 Claims.
(cl. 192-48)
My invention relates to free wheeling devices
which are adapted to be applied to automotive
_
‘vehicles of all kinds.
- ,
The object of my invention is to provide a
5 free wheeling device which is so arranged as to
provide for forward and reverse drive and which
sleeve .49. The rollers 23. are retained in place
by a ring 26 backed by a second split ring 21
expanded into an internal groove 28 in the cup
member I9. A clutch member 29 is loosely splined
to the sleeve 19.80 as to be slidable and to allow a 5
slight rotation thereon for the reasons pointed
is capable of free wheeling between the forward. out hereinafter. External teeth 39 on the mem
and rearward driving positions, but which is also ber 29 are adapted to engageinternal teeth 3| cut
capable of ‘being manually locked so as to elim
.10 inate the freewheeling action, which is capable
of positive actuation during the operation there
of. Further objects of my invention will. appear
from the detailed description of the same here
I
15
inafter.
-
While my invention is capable of embodiment
" ‘ in many di?erent forms, for the purpose of ii
lustration I have shown only two forms of the '
in the end of the cup member ii. A manually
shiftable arm 32, ?xed to a rod 33 slidable in a 10
cover member 34 of any desired type, has a lower
yoke portion 35 engaging a groove 39 in the clutch
member 29. A wedge 31 in a tapered recess of
theyoke 35, is retained therein and allowed a
limited sliding motion by a pin 38 in a slot 39 in 15
the yoke 35. A leaf spring 49, fastened to the
yoke 35, tends to urge the wedge 31 into frictional
engagement with the side of the groove 36. A
pair of driving pins 4| and, 42, ?xed in the clip
‘disk 25, are slidable in holes 44 through the 20
20 of the invention;
Fig. 2 is a detail section 'of the free wheeling clutch member 29. An eccentrically weighted
ring 45, having an enlongated hole 46, asshown in
mechanism taken on line 2-2 of Fig. 1;
Fig. 3 is a left side elevation showing details of Fig. 3, is loosely supported on the sleeve I9, the
the control mechanism partly in section taken on weighted side 41 being normally urged inward
same in the accompanying drawings, in which
Fig. 1 is a vertical section showing one form
25 line 3-3 of Fig. 1;
'
'
Fig. 4 is a development of the friction control
?nger;
J
Fig. 5 is a detail of the roller guide;
F18. 6 is a vertical section of an alternative
30 form of the invention; ‘
I
Fig. 'l is a left side elevation showing details
of the control mechanism of Fig. 6;
Fig. 8 illustrates the loosely splined relation
between the clutch member and its supporting
35 sleeve; and
Fig. 9 is a vertical section of the parts shown
in Fig. 4.
.
Referring to Fig. 1, I have provided a driving
shaft ill, supported on the usual bearings I I. An
40 extension [2 of the shaft i0 is supported in a
pilot bearing I: in a recess l4 of a driven shaft
[5. Formed integrally with the ‘driven shaft’ i5
is a cup-shaped. member 16 which constitutes
the outer or driven 'ring of the free wheel drive.
45 ‘An inner-or driving member l1, having tapered
. peripheral recesses i8 with?at intervening sure
faces, is‘splined to a sleeve I9 which in turn is
splined to the driving shaft ill. A ring 20, backed
-
by a bushing 2| fastened by a cotter pin 22
50 through the shaft l0, restrains the sleeve 19
from endwise motion on-the shaft to. Each ta
peredrecess I8 of the driving member l1 contains
by a leaf spring 49 ?xed at one end in the ring 25
45 the other end thereof resting in the hole 46.
A slot 49 in the ring 45 opposite the weighted
side 41, engages a pin’ 59 ?xed in theclip disk
25. ‘A tooth it on the inner surface of the ring
45, is adapted to ‘engage an edge 52 of one spline 3O
groove 53 of the sleeve I9 and thus act as a ful
crum. A split retainer ring. 53a, Fig.'_1, restrains
the weight ring 45 from moving sidew'ise on the
sleeve i9.
'
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The operation of this form of my invention is ‘'35
as follows: The driving shaft I0, being revolved
by the motor in a forward or clockwise direction,
as shown in Fig. 3, the driving member I‘! carries
the rollers 23 around. and with them the clip disk
25, as the parts l0, l9 and 29 are keyed together 40
and as the pins 4| and- 42 extend from the part
29 to the cage 25. The loose splined connection
between l9 and 29 permits this initial movement
of the ‘roller cage 25 notwithstanding the fact
that the cage is connected by the pins 4! and 45
42 to the part 29. Initially, before the swinging
of the weight 41, the splines on the clutch mem
ber 29 at the upper part of- Fig. 8 will ?oat be
tween the splines on the'sleeve l9. This is due
to the spring 48 initially holding the weight 41 in 50
its unswung position. For this purpose the
spring 48 is made relatively strong. The weight
a roller 23, guided by a spring clip 24, as shown
4‘l,.due to the centrifugal force, tends to swing
in Fig. 5. The clips 24 are riveted to a disk 25
relatively counter-clockwise on the tooth it as a
55 which is rotatably supported on the splined
fulcrum engaging the spline edge 52, the said 55
9,098,488
centrifugal force acting against the force of the
spring 48. This motion is transmitted through
the pin 50 to the clip disk 25, urging the rollers
22 into their forward drive tapers and causing a
5 positive. forward drive. This is possible, due to
the loosely splined relation of the parts 2! and ID.
_r,:exam_ple,_at that time the splines on the
'
29v at the upper part of Fig. 8
will approach towards the left the splines on the
.10 sleeve I9. Should the speed of the driven mem
ber l6 exceed that of the driving-member II,
ing the rollers into the forward driving tapers
thereof, said pockets being so arranged that free
wheeling will take place when the driven mem
ber over-runs the driving member, and means for
controlling the operation of the free wheeling de-_
vice, said means comprising cooperating'devices,
one of which is retardably connected to the driv- _
ing member and means for retarding the same -’
upon the reverse drive of the driving member so
as to throw the said rollers into reverse driving
position of the driven member,v said retarding
the unit will free wheel as the cup-shaped mem
means being adapted to overcome the force of
ber I8 will roll the rollers 23 on’ of their forward
driving tapers.
‘
said spring means.
when the shaft I0 is driven in the reverse
direction, the same centrifugal force on the
weighted ring 4'! causes the latter to act in the
same direction as before noted against the spring
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2. A free wheeling device comprising a driving
member, a driven member, a set of rollers adapted
to couple the driving member to the driven mem
ber,,one of said members having tapered pockets
for said rollers, said pockets being so arranged
48, thus tending to keep the rollers 22, shifted in ‘ that free wheeling will take place when the driven
20 the direction of the forward drive tapers and thus
preventing their engagement. To overcome this
tendency and give a reverse drive, the wedge I],
acted upon by friction in an upward direction, see
Fig. 4, slides up its taper and places an increased
25 frictional resistance on the clutch member 29.
This resistance causes the clutch member 29 to
shift back slightly in its loosely splined relation
to the sleeve l9, shifting the clip disk 25 through
the drive pins 4| and 42, overcoming the force
30 of the weight 41, and forcing the rollers 22 into
the reverse driving tapers, thus giving a reverse
drive.
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'
To sum up, the tendency of the weight 41 is to
hold the rollers in forward driving and free wheel 35 ing positions at all times. In reverse the wedging ‘
friction on the clutch member 29 overcomes the
weight 41 and shifts the rollers into reverse .drlv‘-'
ing position. The 10st motion between the mem
ber 29 and the sleeve is permits the necessary
40 relative rotation of such member 29 and the clip
member over-runs the _ driving member, and 20
means'for controllingv the operation of the free
wheeling device, said means comprising cooperat
ing devices adapted to move the'rollers into their
forward drive tapers on the forward drive, one of _
which is retardably connected to the driving mem 25
ber and means comprising a wedging friction de
vice brought into engaging action by the reverse
drive’ for retarding the same upon the reverse
drive of the driving member, vso as‘ to throw the
said rollers into reverse ‘driving-tapers,
30
'_ 3. A freewheeling devicecomprising a driv
ing member, a driven member, a set of rollers
adapted to couple the driving; member to the
driven member, one of said members having ta
pered pockets for said rollers, a centrifugalweight 35
adapted to force the rollers into the.‘ forward
driving tapers, said pockets being so arranged
that free wheeling will take place when the driven
member over-runs the driving member, and
means actuated by the rotationand superior to 40
disk 25 connected thereto with respect to the the force ofthe centrifugal weight at its full
shaft l0 and the sleeve l9, both in moving the speed for controlling the’ operation of the cen
rollers in their forward driving and reverse driv
ing positions.’ The spring 48 thus tends to hold
45 the weight 41 and the connected clip disk 25 in the
initial or intermediate'position.
.
trifugal weight.
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4. A'free'wheeling device comprising a driv
ing member-,a driven’ member, a set of rollers
adaptedto couple the driving member to the
driven member, one of said members having ta
To give a manual lockout, the clutch member
29 is slid by the shifter arm 32 until its external pered pockets for said rollers, a centrifugal weight
teeth 30 mesh with the internal teeth II in the a adapted "to force,_,the rollers into the forward
50 driven cup Hi.
driving tapers, said pockets being so arranged 50
The construction shown in Fig. 6'is identical - that free wheeling will take place when the driven
with that shown in Fig. 1, except that the member over-runs the driving ‘member, and
weighted ring 45 is replaced by curved springs 54 means for controlling the operation of the free
and 55, see Fig. ‘I, retained on pins 56 and 51 wheeling device, comprising means actuated by
55 ?xed in the clip disk 25a. Pins 58 and 59, also‘ the rotation to counteract the centrifugal force
?xed in the disk 25a, urge the springs 54 and 55 > of the centrifugal weight at its full speed.
against edges 60 and 6| of splined grooves 62 and
, 5. A free wheeling device comprising a driv
63, thus urging the disk 25a in a counter-clock
ing member, a driven member, a set of rollers
wise direction relative to the driver I‘! and nor
adapted to couple the driving member to the
60 mally holding the rollers in forward driving po
driven'member, one of said members having ta 60
sition. In reverse, the added frictional lag of the ' pered pockets forsaid rollers, a centrifugal weight
' clutch member 29, due to the wedge 21, see Fig. 4, fulcrumed on the periphery of the driving mem
overcomes the springs 54 and 55 and urges the ber, adapted to force the rollers into the forward
rollers 23 into the reverse driving tapers, in the driving tapers, said pockets being so arranged
65 manner previously described.
-,
While I have described my invention above in
detail I wish it to be understood that many
70
that free wheeling will take place when the driven
member over-runs the driving member, and
means superior to the force of the centrifugal
changes may be made therein without departing ' weight at its full speed’for controllingthe opera- ‘
from the spirit of the same.
,
tlon of the centrifugal weight.
I claim:
"
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6. A free wheeling devicev comprising a driving
1. A free wheeling device comprising a driving member, a driven member,'a set of rollers adapted 70'
member, a driven member, a set of rollers adapted to couple the driving member to the driven mem
to couple the driving member to the driven mem ber, one of said members having tapered pockets
ber, one of said members having tapered pockets forsaid rollers, 'a centrifugal weight fulcrumed
for said‘rollers, a spring means for normally forc
on the periphery of the drivingmember, adapted
3
‘to force the rollers into the forward driving ta
pers, said pockets being so arranged that free
wheeling will take place when the driven member
over-runs the driving member, and means for
controlling the operation of the free wheeling
for said rollers, a spring means normally forc
ing the rollers into the driving tapers, reacting
against a recess in the driving member, said pock
ets being so arranged that free wheeling will take
device, comprising means to counteract the cen
place when the driven member over-runs the
driving member, and means actuated by the re
trifugal force of the centrifugal weight at its full
speed.
verse drive for controlling the operation of the
free wheeling device, comprising means to coun
7. A free wheeling device comprising a driving
'10 member, a driven member, a set of rollers adapted
to couple the driving member to the driven mem
ber, one of said members having tapered pockets
, for said rollers, a centrifugal weight fulcrumed
in a splined recess of the driving member, adapted
15 to force the rollers into the forward driving ta
pers, said pockets being so arranged that free
wheeling will take place when the driven member
over-runs the driving member, and means for
controlling the operation of the centrifugal
20 weight.
8. A free wheeling device comprising a driving
member, a driven member, a set of rollers adapted
to couple the driving member to the driven mem
ber, one of said members having tapered pockets
25 for said rollers, a centrifugal weight fulcrumed
in a splined recess of the driving member, adapted
to force the rollers into the forward driving ta
pers, said pockets being so arranged that free
wheeling will take place when the driven mem
'30 ber over-runs the driving member, and means for
controlling the operation of the free wheeling
device, comprising means to counteract the effect
of the centrifugal weight.
9. A free wheeling device comprising a driving
35 member, a driven member, a set of rollers adapted
to couple the driving member to the driven mem
ber, one of said members having tapered pockets
for said rollers, a spring means normally forcing
the rollers into the driving tapers, said pockets
40 being so arranged that free wheeling will take
place when the driven member over-runs the
teract the effect of said spring means and so as
to lock the driving to the driven member on the 10
reverse drive.
12. A free wheeling device comprising a driving
member, a driven member, a set of rollers adapted
to couple the driving member to the driven mem
ber, one of said members having tapered pockets 15
for said rollers, a spring means normally forcing
the rollers into the driving tapers, reacting
against a spline recess in the driving member,
said pockets being so arranged that free wheel
ing will take place when the driven member over 20
runs the driving member, and means actuated by
the reverse drive for controlling the operation
of the free wheeling device, comprising means to
counteract the effect of said spring means and
so as to lock the driving to the driven member
on the reverse drive.
13. A free wheeling device comprising a driving
member, a driven member, a set of rollers adapted
to couple the driving member to the driven mem
ber, one of said members having tapered pockets 30
for said rollers, said pockets being so arranged
that free wheeling will take place when the
driven member over-runs the driving member, a
retainer ring for the rollers, a spring controlling
device for normally forcing the rollers into the
driving tapers, and means for throwing the free
wheeling device out of operation, said means
comprising a rotatable member coupled to the
retainer ring and a manual lock-out device having
a reverse-drive actuated friction retarding means 40
for retarding the rotatable member so as to there
driving member, and means for controlling the
operation of the free wheeling device, comprising
by overcome the action of said spring controlling
means to counteract the eifect of said spring
14. A free wheeling device comprising a driving
member, a driven member, a set of rollers adapted 45
to couple the driving member to the driven mem
ber, one of said members having tapered pockets
for said rollers, said pockets being so arranged
that free wheeling will take place when the driven
and so as to lock the driving to the driven
4.5 means
member on the reverse drive including a reverse
drive friction device.
10. A free wheeling device comprising a driving
member, a driven member, a set of rollers adapted
50 to couple the driving member to the driven mem
ber, one of said members having tapered pockets
for said rollers, a spring means normally forcing
therollers into the driving tapers, said pockets
being so arranged that free wheeling will take
55 place when the driven member over-runs the
driving member, and means for- controlling the
‘operation of the free wheeling device, comprising
device.
.
member over-runs the driving member, a retainer 50
ring for the rollers, a spring controlling device
for normally forcing the rollers into the driving
tapers, and means for throwing the free wheeling
device out of operation, said means comprising a
rotatable member splined to the driving member, 55
one of the members having a splined recess, the
rotatable member being coupled to the retainer
means to counteract the effect of said spring
ring and a manual lock-out device having a re
means on the reverse drivelincluding a reverse
verse-drive actuated friction means for retard
60 drive wedging friction device.
11. A free wheeling device comprising a driving
member, a driven member, a set of rollers adapted
to couple the driving member to the driven mem
ber, one of said members having tapered pockets
ing the rotatable member so as to thereby over 60
come the action of said spring controlling device,
said- spring controlling device comprising a cen
trifugal weight fulcrumed in the spline recess.
'
EDWARD A. ROCKWELL.
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