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Патент USA US2403594

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‘July 9,.1945-
EQT. GILLIARIE)
2,403,594 '
CLUTCH MECHANISM FOR VARIABLE SPEED GEARING
Filed July 4, 1945
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July 9, 1946.
2,403,594
E.\T. GILLIARD
CLUTCH MECHANISM FOR VARIABLE SPEED GEARING.
'
Filed July 4, 1945
s Sheets-Sheet 2
{@2
July 9, 1946.
2,403,594
E. 1'. GILLIARD
r‘ ' 'c?uwcn MECHANISM FOR VARIABLE SPEED GEARING
'Filéd July 4, 1945
4%,
:¢/3?:/
‘:5 Sheets-Sheet 5
2,403,594
UNITED STATES‘ PATENT. OFFICEX
Patented July 9, 1946
2,403,594
CLUTCH MECHANISM FOR VARIABLE-SPEED
'
GEABING
‘
Ernest T. Gilliard, Trout Bun, rm, asslgnor to The \
Aviation Corporation, ‘New York, N. Y., a cor
poration of Delaware
Application July 4, 1945, Serial No. 803,161
10 Claims.
(Cl. 192-53) V
1
.
ment with two-speed driving mechanism.
2
ing and comprises a front-section l5 and a rear
The invention relates to clutches for engagee
section l6 and may be of any suitable construc
tion. The transmision gearing is housed in the
case-sections I5 and it. These sections of the
gear-case are detachably secured together by
’
One object of the invention is to provide clutch
ing mechanism with axially engageable teeth for
two-speed driving mechanism with an improved
balk-device for controlling meshing of. the.
clutch-teeth until synchronization occurs be
tween the driven and driving elements.
bolts.
-
-
1
.
Propellerishaft b for an airplane is iournalled
in an anti-friction bearing d which is supported
in the case-section I i and in a bushing econ
?ned in a socket in the front end of the crank
1
Another object of the invention is to provide
clutch mechanism with-a balk-ring for control
ling the meshing of axially movable clutch-teeth.‘
shaft a.
Another object of the invention is to provide
The invention is exemplified with two-speed
reduction gearing for driving‘ a propeller-shaft
clutch'mechanism with a relatively large num
ber of clutch-teeth and an improved balk-device.
b from the crank-shaft a of an internal combus
tion engine. . This two~speed gearing comprises:
which prevents meshing of the clutch-teeth
until the speed of the driving and driven elements
are rotated at substantially equal speeds, and
, a wheel 20 which is provided with a hub l8 on
which is light and compact in construction.
the front end of crank-shaft a and secured to
rotate with said shaft by splines 2|; a collar 22
and a nut 23 for securingv wheel 20 against axial
:vhich is adapted for driving an airplane propel
er.
--
20 movement on the front end of crank-shaft a;
I
Another object of the invention is to provide
an internally toothed gear 25 integral with wheel
20; an internally toothed gear 28 integral with
wheel 20 and of lesser pitch diameter than the
gear 25; an annular‘ series of planetary pinions
clutch mechanism with a balk-ring which is
simple in construction and can be economically '
~ produced by shaping and milling operations.
'21 meshing with gear 25; a sun-gear 28 meshing
with planetary pinions 21 and which is secured
Another object of the invention is to provide
a rugged trouble free balk-device which is es
against rotation; an annular series of planetary
pecially designed to withstand the rigors of air
craft use.
'
1
plnions 28 meshing with gear 26; a carrier-wheel
'
Other objects of the invention will appear ‘from
the detailed description.
_
g
30
The invention consists in’ the several features
hereinafter set forth and more particularly de
38 which is provided with integral studs 3| on
which planetary pinions 21 are lournalled for ro
tation on their own axes; a sun-gear 32 of lesser
pitch diameter than the sun-gear 28, integral
with carrier 33 and meshing with the planetary
pinlons' 28; a carrier 33 provided with forwardly
In the drawings:
'
Fig. 1 is a longitudinal section of driving mech 35 projecting integral studs 34 on which planetary
pinlons 28 are four-nailed for rotation on their
anism for a propeller shaft embodying the in
fined by claims at the conclusion hereof.
vention.
'
'
own axes and which includes a body-section 33 -
»
and a hub 31 which is journalled and axially con
Fig. 2 is a section of the two-speed reduction
gearing and a portion of the clutch mechanism . ' fined on the forwardly extending hub 18 of wheel
upon a larger scale.
I
28 for rotation of carrier 33 relativelylto wheel
..
28;- a hub 33 on carrier 30 which is Journalled on
the hub‘ of carrier 33 for relative rotation of
carrier 30. Section 38 of carrier 33 is rotatably
Fig. 3 is a transverse section taken on line 3-3
of Fig. 1.
‘
Fig. 4 is a transverse section through thebalk
' con?ned against axial movement on hub I! of
ring and clutch-sleeve taken on line 3-3 of Fig. 2.
Fig. 5 is a side elevation/of the rear portion of 45 ‘wheel 28 by collar 22 and nut 23. Hub 38 of car
rier 30 is rotatably con?ned against axial move
the clutch-sleeve.
_
V
ment on the hub of carrier 33 by a cylinder cas- Fig. 6 is a longitudinal section of the balk-ring.
ing I01 for a ring-piston 43 on which sun-gear
' ‘ Fig. '1 is a diagrammatic view illustratingthe 28 is formed.
I
.
clutch-teeth on- the clutch-sleeve and the teeth
- A torque-meter comprises a casing I01 for cyl
on the balk-ring.
’
The invention is exempli?ed in driving mech
anism which comprises generally, planetary re
duction gearing which is driven by powerfrom
the crank-shaft a of an internal combustion en- _
gine; clutch-mechanism which is driven by the
two-speed reduction gearing; and transmission
gearing driven by the clutch mechanism for
driving a propeller-shaftb'. The driving mechf
50
inder I06 and secured to a cross-wall "in the .
gear-case, and a ring-piston 45 in said cylinder,
and on sun-gear 23. and holds gear 28 against
rotation, for the operation of the two-speed re
‘ duction gearing
A rotatable and axially slidable clutch-sleeve
46 is engageable with the carrier 30 for driving
the propeller at the low-speed ratio and with
carrier 33 for driving it at the high-speed ratio.
An
internal peripheral portion of the hub 38 oi‘
60
secured to and supported from the engine‘ cass
anism is enclosed in a gear-case which is usually
2,403,094
-
3
4
carrier 36 is provided with an integral annular
of clutch-teeth 4| which are engageable by a
The invention comprises a balk-ring 16 which
extends around the clutch-teeth 46 and 4i and
is provided with internal peripheral portions ‘II
which are slidable axially on said clutch-teeth.
The inner ends of clutch-teeth 41 and 48 on
clutch-sleeve 46 are spaced apart to form an an
nular channel 13. Abutments 14, integral with
mating series of clutch-teeth 48 on clutch-sleeve
sleeve 46, are circumferentially arranged at the
series of clutch-teeth 46 which are engageable
with mating clutch-teeth 41 on sleeve 46, for
driving the sleeve and propeller at the low-speed
ratio. An internal peripheral portion of the hub
31 of carrier 33 is provided with an annular series
.
46 for driving the sleeve and propeller at the
longitudinal center of the channel 13 or .the space
high—speed ratio. The inner end of clutch-sleeve 10 between the clutch-teeth 41 and 46. Clutch
46 is slidably supported and journalled for rela
' teeth 41 and 48 are staggered circumferentially.
tive rotation, as at 46’, on the hub 31 of section
36 of carrier 33. When clutch-teeth 41 on sleeve
46 are engaged by axial sliding movement of the
sleeve with clutch-teeth 46 on carrier 36, said 15
The inner periphery of the hub 36 of carrier 36
is provided with a conoidal peripheral friction
face'Il and the balk-ring 16 is provided with a
mating friction-face 16 for frictionally driving,
sleeve will be driven by the two-speed reduction
when engaged, the balk-ring from carrier .36..
gearing at the low-speed ratio. When sleeve 46
Hub 31 of high speed carrier 33 is provided with
is shifted axially to engage its clutch-teeth 48
a conoidal friction-face 66 and a mating friction
with clutch-teeth 4i on carrier 33, said sleeve will
face 8| is formed on the rear end of the balk
be driven by the two-speed reduction gearingat 20 ring for frictionally driving, when engaged, the
the high speed ratio. When the clutch-sleeve 46
balk-ring from the high speed carrier. A series
is axially positioned with its teeth 41 and 48 be
of teeth 15 are provided on the longitudinally
tween clutch-teeth 46 and M, said sleeve will be
central portion of the inner periphery of balk
in‘ its neutral position and uncoupled from the
ring 16 and extend axially and fit between the
two-speed reduction gearing.
~
25 inner ends of clutch-teeth 41 and 46, when sleeve
Clutch-sleeve 46 may be connected to drive the
46 is in its neutral position. Teeth 15 at one of
propeller in any suitable manner. An exemplifi
their ends are adapted to be engaged by the inner
cation of gearing for driving the propeller-shaft
ends of clutch-teeth 46 when teeth 16 and 48 are
b from clutch-sleeve 46 is illustrated in Fig. 1
in longitudinal alignment to limit the forward
of the drawings, in which the clutch-sleeve is 30 axial movement of sleeve 46 until teeth 48 and
slidably ,splined, as at 52, to the hub 5| of wheel
15 are relatively rotated to align teeth 15 withthe
66 which is provided with an externally toothed
gear 63; a wheel 56 which is splined, as at 66, to
spaces between teeth 48 to release sleeve 46 for
continued forward movement of clutch-sleeve 46.
propeller-shaft‘ b; planetary pinions 61 which are
Teeth 16 at their opposite ends are adapted to
_ journalled on studs 58integral with wheel 65 and 35 be engaged by teeth 41 on sleeve 46 when said
mesh with gear 63 and an internally toothed gear
teeth are longitudinally aligned for limiting rear
> 59 which meshes with the planetary pinions 61
ward movement of ‘sleeve 46 and releasing said
and is ?xedly secured between sections I6 and
sleeve for further rearward movement when teeth
I6 of the gear-case. The hub II of wheel 66 is
16 and 41 are relatively rotated-to longitudinally
. journalled on the hub 66 of wheel 66 and held 40 align teeth 15 with the spaces between the teeth
against axial movement thereon by a collar 6|
41. Abutments 14 project outwardly from the
and a split-ring 62. Rotation of wheel66 by
outer periphery of sleeve“ in the central por
clutch-sleeve 46 imparts, in co-action with the
tion of the channel 13 and some of the teeth 15
, stationary internally toothed gear69, planetary
are omitted from circumferential portions of the
movement of the-pinions 61-and rotates wheel 45 balk-ring to permit limited relative rotation be
65 and vpropeller-shaft b from the clutch-sleeve
tween the balk-ring and clutch-sleeve.
, 46 which is driven through the two-speed reduc
Mechanism for axially shifting the clutch-v
tion gearing.
sleeve 46 for controlling’ the speed ratio at which
The operation of the two-speed reduction gear
the propeller-shaft b is driven is exempli?ed by
ing will ‘be as follows: When sleeve 46 is shifted
‘an axially movable shifter-collar 96 which is pro
axially and forwardly to mesh its clutch-teeth . vided with an inwardly extending ?ange 6| which
41 with the clutch-teeth 46 on the low speed car
is con?ned between an annular shoulder 92 and
rier 36 and the‘sun-gear 28 is secured against
a collar 63 on sleeve 46, while the latter is rotat
rotation, the primary drive-wheel 26 will impart
ing; diametrically opposite pivot-studs 94 formed
planetary movement to the pinions 21; the 55 on collar 66;_ arms 66 having their distal ends
planetary movement of the pinions 21 will rotate
pivotally connected to studs 94; a tubular shaft
the carrier 36 and drive the clutch-sleeve 46
~36 iournalled in brackets 61 which are ?xed to
through meshing teeth 46 on said carrier and
cross-wall I1 in gear-case section I6 and to which
the clutch-teeth 41 on clutch-sleeve 44 at a re
arms 66 are splined, as at 66; and a torque-‘rod
duced speed relatively to the crank-shaft a. The 60 66 extending through tubular shaft 66 and splined
sun-gear 32 and gear 26 will then impart idle
thereto at I66. Torque-rod 36 may be connected
planetary movement to the pinions 26 and the
in any suitable manner for remote control, usurl
‘carrier 36 will idle around the clutch-sleeve.
1y by a hydraulic piston and cylinder which is
When the clutch-sleeve 46 has been axially shift
adapted to provide torque for rocking arms 96 to
ed rearwardly to mesh its clutch-teeth 43 with 66 shift clutch-sleeve 46 between its neutral and its
the clutch-teeth M on the high-speed carrier 33,
high-speed and low-speed driving positions. A
- planetary movement will be imparted to the
shaft I6! is splined, as at I62, to tubular shaft 96
pinions 21 by the sun-gear 23 and internal gear
for operating an indicator for the position of the
26 on the wheel 26; the carrier 36 will rotate the
clutch mechanism.
'
4
sun-gear 32 relatively to carrier 33 and impart 76 The operation of the mechanism for selectively
planetary movement to the pinions 26 so that the
driving clutch-sleeve 46 and the propellers at dif
carrier 33 will be driven in the same direction as‘
ferent speed ratios will be as follows: assuming
the carrier 36 and at the high-speed ratio and
the clutch-teeth 41 on sleeve 46 to be meshed with
at a reduced speed relatively to the crank-.
clutch-teeth 46 on the low-speed carrier 36 and
shaft a.
76 the propellers are being drivenat the low-speed
. 2,403,594
6
ratio and his desired to drive the propellers at
the'high-speed ratio, the pilot will close the en
gine throttle to reduce the torque to substantially
zero on the two-speed gearing and slide clutch.
sleeve 46 rearwardly to disengage said clutch
teeth 41. Rearward force applied to the clutch
sleeve, will move clutch-teeth 41 longitudinally
> in alignment=with teeth 15 on the balk-ring and
passing longitudinally between teeth 15 on the ‘
balk-ring. The front ends of teeth 41 are cham
iered, as at 41',‘ to facilitate the passage of clutch
teeth 41 betweenclutch-teeth 40. Clutch-sleeve
46 will then be positively driven from the low
speed carrier 30.
'
'
' The invention exempli?es clutch mechanism
for driving an airplane propeller at different speed
ratios from the engine, which includes clutchthe engagement of the inner ends of clutch-teeth
41 with the front ends of teeth 15 arrests sleeve 10 teeth which are adapted to be meshed by axial
relative sliding movement and a balk device which
46 against further rearward movement. The
friction-face 80 on the balk-ring will engage the
is simple in construction and e?lcient in opera
tion for preventing meshing of the clutch-teeth
balk-ring friction-face 8| on the high-speed vcar
' rier 33 which will rotatively urge teeth 15 on the
until the driving and driven elements are sub
balk-ring which are engageable with abutments 15 stantially synchronized. The invention also ex
empll?es a clutch mechanism with E balk device
14 to maintain teeth 15 in engagement with the
ends 143 of said abutments and continue to re
strain the clutch-sleeve against rearward move
ment. The pilot will then slow down the engine ,
for driving the clutch-teeth at different speed
ratios which comprises teeth on the balk-ring
which co-act with the clutch-teeth on the clutch
or speed the propeller rotation by change of blade 20 sleeve for controlling the sliding engagement of
the clutch-teeth on the clutch-sleeve with the
angle. When the speed of the carrier 33 and
clutch-sleeve 46 come to synchronization, the
tendency of the engine to continue to slow down
causes the high-speed carrier 33 to frictionally
teeth on the driving elements. The balk device
is substantially symmetrical, allows the use of
large concentric shafts with the two-speed gear
reduction assembly, and can be economically lab
rotate the balk ring around clutch-sleeve 46
until teeth 15 are longitudinally aligned with the v25 ricated by shaping and milling operations.
spaces between clutch-teeth 41, at which time
The invention is not to be understood as limited
teeth 15 will be disposed substantially at the ends
to thedetails described, since these may be modi
14b of abutments 14. The clutch-sleeve 46 will
?ed within the scopev of the appended claims
then be released ,for continued rearward move 30 without departing from the spirit and scope of
ment, the clutch-teeth 41 passingbetween the
the invention.
'
~
- teeth 15 on the balk ring and clutch-teeth 48
Having thus described the invention, what I
> will mesh with clutch-teeth 4| on the high-speed
claim, as new and desire to secure by Letters
carrier. The clutch-sleeve 46. will then be posi
Patent is:
tively driven at the high-speed ratio from the 35
1. Clutch mechanism for variable speed driv
- carrier 33. The rear ends of clutch-teeth 48 are
ing comprising, a pair of wheels, each provided
chamiered, as at 48’, to facilitate the passage of
with an annular series of clutch-teeth, a clutch
teeth 48 on sleeve 46 between the teeth 4| on
sleeve axially slidable relatively to the wheels and
carrier 33.
,
provided with a pair of annular series of external
- When the propellers are being driven at the 40 clutch-teeth, spaced apart longitudinally, for
high-speed ratio and it is desired to drive them
slidable meshing with the teeth on the wheels,
at the low-speed ratio, the pilot will close the . respectively, a balk-ring extending circumferen
engine throttle to reduce the torque to substan
tially around the clutch-teeth on the sleeve, and
tially zeroon the two-speed gearing and apply
forward force to move the clutch-sleeve 46 to
slide clutch-teeth 48 out of engagement with
clutch-teeth M on the carrier 33. The inner ends
of clutch-teeth 48 will then be longitudinally
aligned with the rear ends oi.’ the teeth 15 on
relatively to which the sleeve is rotatable and
slidable,_ provided with a circumferential series
of internal teeth adapted to alternately mesh
with, and to pass azu'ally between the teeth of,
the pair of series of clutch-teeth on the sleeve,
upon relative axial movement of the balk-ring
the balk-ring and the engagement of the inner 50 and the sleeve, abutments on the outer periphery
ends of clutch-‘teeth 48 with the rear ends of
of the clutch-sleeve axially disposed between the
teeth 15 will arrest the sleeve against further
series of_ clutch-teeth on the sleeve engageable
forward movement. The friction-face 18 on the
with and circumferentially spaced between some
balk-ring willengage the friction-face 11 on the
of the teeth on the balk-ring for limited relative
low-speed carrier 30. The teeth 15 on the balk 55 rotation when the teeth on the balk-ring are posi
ring 10 which are .engageable with abutments 14
tioned axially between. the series of clutch-teeth‘
will then be disposed substantially at the ends
on the sleeve, and‘ friction-means between the
14b of said abutments and maintain the 'con- >
balk-ring and the wheels, respectively, for pro
tiguous ends of teeth 15 longitudinally aligned
ducing relative'rotation of the balk-ring and
with the inner ends 0! clutch-teeth 48 and main 60 clutch-sleeve to alternately move the teeth on .
tain the balk-ring in position to restrain further
the balk-ring into axially abutting relation with
forward movement of the“ clutch-sleeve 46. The
one series, and into axiallyaligned relation with
pilot will then increase the speed of the engine
the spaces between the teeth of the other series,
or slow down the propeller speed until the speed
of the clutch-teeth'on the sleeve and controlling
of the clutch-sleeve and the low-speed carrier 65 relative axial sliding movement for meshing the
has been synchronized. As soon as the relative
clutch-teeth on the sleeve and the wheels.
speed between the engine and propeller is sum
2. Clutch mechanism for variable speed driving
' cient to rotate the balk-ring around clutch-sleeve
comprising, a pair of wheels, each provided with
46 the teeth 15 on the balk-ring will be rotatively
an annular series of clutch-‘teeth, a clutch-sleeve
urged into longitudinal alignment with the spaces 70 axially slidable relatively to the wheels and pro
between clutch-teeth 4B and said sleeve will be
vided with a pair of annular series of external
released forv forward movement. The continued
clutch-teeth, spaced apart longitudinally, for slid
forward force applied to the clutch-sleeve will
able meshlng with the, teeth on the wheels, re
shift it to mesh its clutch-teeth 41 with teeth 40
spectively, the teeth on one series of clutch-teeth
on the low-speed carrier 30, the clutch-teeth 48 75 on the sleeve being circumferentially o?set rela
23,403,594
7
tively to the other, a balk ring extending cir
cumferentially around the clutch-teeth on the
sleeve, and relatively to which the sleeve is rotat
able and slidable, provided with a circumferential
series of internal teeth adapted to alternately
mesh with, and to pass axially between the teeth
of, the pair of series of clutch~teeth on the sleeve,
upon relative axial movement of the balk-ring
and the sleeve, abutments on the outer periphery
teeth on the balk-ring for limited relative rota
tion when the teeth on the balk-ring are posi
tioned axially between the series of clutch-teeth
on the sleeve, and friction-means between the
balk-ring and the. wheels, respectively, for pro
ducing relative rotation of the balk-ring and
clutch-sleeve to alternately move the teethon the
balk-ring into axially abutting relation with one
series, and into axially aligned relation with the
of the clutch-sleeve axially disposed between the 10 spaces between the teeth of the other series, of
series of clutch-teeth on the sleeve engageable
the clutch-teeth on the sleeve and controlling
relative axial sliding movement for meshing the
clutch-teeth on the sleeve and the wheels.
5. Clutch mechanism for variable speed driv
rotation when the teeth on the balk-ring are
positioned axially between the series of clutch 15 ing comprising, a pair of wheels, each provided
teeth on the sleeve, and friction-means between
with an annular series of internal clutch-teeth, a
clutch-sleeve axially slidable relatively to the
the balk-ring and the wheels, respectively, for
producing relative rotation of the balk-ring and
wheels. and provided with a pair of annular series
with and circumferentially spaced between some
of the teeth on the balk-ring for limited relative
clutch-sleeve to alternately move the teeth on
of external clutch-teeth, spaced apart longitudi
the balk-ring into axially abutting relation with
nally, for slidable meshing with the teeth on the
wheels, respectively, a balk-ring extending ciré
one series, and into axially aligned relation with '
the spaces between the teeth of the other series, ,
cumferentially around the clutch-teeth on the
sleeve and relatively to which the sleeve is rotat
able and slidable, provided with a circumferential
clutch-teeth on the sleeve and the wheels.
25 series of internal teeth adapted to alternately
mesh with, and to pass axially between the teeth
3. Clutch mechanism for variable speed driving
of, the pair of series of clutch-teeth on the sleeve,
comprising, a pair of wheels, each provided with
of the clutch-teeth on the sleeve and controlling ‘
relative axial sliding movement for meshing the
an annular _ series of internal clutch-teeth, a
upon relative axial movement of the balk-ring
and the sleeve, abutments on the outer periphery
clutch-sleeve axially slidable relatively to the
wheels and provided with a pair of annular series 30 of the clutch-sleeve axially,disposed between the
series of clutch-teeth on the'sleeve, engageable
of external clutch-teeth, spaced apart longitudi
nally, for slidable meshing with the teeth on the ' with and circumferentially spaced between some
of the teeth on the balk-ring for limited relative
wheels, respectively, ‘a balk-ring extending cir
rotation when the teeth on the balk-ring are
cumferentially around the clutch-teeth on the
positioned axially between the series of clutch
sleeve and relatively to which the sleeve is rotat
able and slidable, provided with a circumferential
series of internal, teeth adapted to alternately
mesh with, and to pass axially between the teeth
teeth on the sleeve, and friction-means between
the ends of the clutch-ring and the wheels, re
spectively, for producing relative rotation of the
balk-ring and clutch-sleeve to alternately move
of, the pair of clutch-teeth on the sleeve, upon
relative axial movement of the balk-ring and the 430 the teeth on the balk-ring into axially abutting
relation with one series, and into axially aligned
sleeve, abutments on the outer periphery of the
relation with the spaces between the teeth of the
clutch-sleeve axially disposed between the series
other series, of the clutch-teeth on the sleeve and
of clutch-teeth on the sleeve, engageable with and‘
controlling relative axial sliding movement for
circumferentially spaced between some of the
teeth on the balk-ring, for limited relative rota 45 meshing the clutch-teeth on the sleeve and the
wheels.
tion when the teeth on the balk-ring are posi
6. Clutch mechanism for variable speed driv-‘
tioned axially between the series of clutch-teeth
ing comprising, a pair of wheels, each provided
on the sleeve, and friction-means between the
with an annular series of internal clutch-teeth, a
balk-ring and the wheels, respectively, for pro
clutch-sleeve axially slidable relatively to the
ducing relative rotation of the balk-ring and
wheels and provided with a pair of annular series
clutch-sleeve to alternately move the teeth on the
of external clutch-teeth, spaced apart longitudi
balk-ring into axially abutting relation with one
nally, for slidable meshing with the teeth on the
series, and into axially aligned relation with the
wheels, respectively, a balk-ring extending cir
spaces between the teeth of the other series, of
cumferentially around the, clutch-teeth on the
the clutch-teeth on the sleeve and controlling the
sleeve, and relatively to which the sleeve is rotate
relative axial movement for slidably meshing the
able and slidable, provided with an integral cir
clutch-teeth on the sleeve and the ‘wheels.
cumferential series ofinternal teeth adapted to
4. Clutch mechanism for variable speed driving
alternately mesh with, and to pass axially be
comprising, a pair of wheels, each provided with
an annular series of internal clutch-teeth, a 60 tween the teeth of the pair of series of clutch
teeth on the sleeve, upon relative axial movement
clutch-sleeve axially slidable relatively. to the
of the balk-ring and the sleeve, abutments on
wheels and provided with a pair of annular series
the outer periphery of and integral with the
of external clutch-teeth, and a channel axially
clutch-sleeve, axially disposed between the series
of clutch-teeth on the sleeve, engageable with and
circumferentially spaced between some of the
extending circumierentially around the clutch
teeth on the balk-ring for limited relative rota
teeth on the sleeve, and to which the sleeve is
tion when the teeth on the balk-ring are posi
relatively rotatable and slidable, provided with a
tioned axially between the series of clutch-teeth
circumferential series of internal teeth adapted
to alternately mesh with, and to pass axially into 70 on the sleeve, and friction-means between the
balk-ring and the wheels, respectively, for pro
the channel in the sleeve, upon relative axial
ducing relative rotation‘ of the balk-ring and
movement of the balk-ring and the sleeve, abut
clutch-sleeve to alternately move the teeth on the
ments on the outer periphery of the clutch-sleeve
disposed between them for slidable meshing with
the teeth on the wheels, respectively, a balk-ring
balk-ring into axially abutting relation with one
disposed in said channel engageable with and
circumferentially spaced between some of the‘ 75 series, and into axially aligned relation with the
2,403, 594
axial drive-wheels for driving at diilerent speed
ratios, each provided with an annular series of
spaces between the teeth of the other series, of‘
the clutch-teeth ‘on the sleeve and controlling
relative axial sliding movement for meshing the
internal clutch-teeth, a clutch-sleeve axially slld- ,
clutch-teeth on the sleeve and the wheels.
able between and adapted to ,be driven by said
7. Clutch mechanism'for variable speed driv
ing comprising, a pair of wheels, each provided
wheels and provided with a pair of integral an
nular series of external clutch-teeth spaced apart
longitudinally, for slidable meshing with the teeth
with an annular series of clutch-teeth, a clutch
sleeve axially slldable relatively to the wheels and
provided with a pair of annular series of external
, on the wheels, respectively, a balk-ring extend
clutch-teeth, spaced apart longitudinally, for
10 clutch-teeth on the sleeve and through which the
ing circumferentially around and rotatable on the
slidable meshing with the teeth on the wheels,
respectively, a balk-ring extending circumfer
‘ e'ntially around the clutch-‘teeth on the sleeve,
and relatively to which the sleeve is relatively
rotatable and, slidable,,provided with an integral
circumferential series of internal teeth adapted
to alternately mesh with, and to pass axially'be;
tween the teeth of the pair of series of clutch
teeth on the sleeve, upon relative axial move
ment of the balk-ring. and the sleeve, abutments ~
on the outer periphery of and integral with the
clutch-sleeve, axially disposed between the series
of clutch-teeth on the sleeve, engageable with
and circumferentially spaced between some of the
teeth on the balk-ring for limited relative rota
tion when the teeth on the ‘balls-ring are posi
tioned axially between the series of clutch-teeth
on the sleeve, friction-faces on the wheels, re- '
sleeve is slidable, integrally provided with a cir
cumferential series of internal teeth adapted to .
‘alternately mesh with and to pass axially between
the teeth of the pair of series of clutch-teeth on
the sleeve upon relative axial movement of the
balk-ring and the sleeve with arcuate spaces be
tween some of said teeth on the balk-ring, abut
ments integral with the outer periphery of the
clutch-sleeve axially disposed between the series '
of clutch-teeth on the sleeve and extending into
said arcuate spaces, for limited relative rotation
when the teeth on the balk-ring are positioned
axially between the series of clutch-teeth on the
sleeve, conoidal friction-faces on the ends of the
balk-ring and mating friction-faces on the
wheels, for producing relative rotation of the
balk-ring and clutch-sleeve to alternately move’
the teeth on the balk-ring into axial abutting
relation with one series, and into axial aligned
spectively, and co-acting friction-faces on the
ends of the balk-ring for producing relative rota-‘ 30 relation with the spaces between the teeth on the
other series, of the clutch-teeth on the sleeve and
tion of the balk-ring and clutche-sleeve to alter
controlling relative axial sliding movement of
nately move the teeth on the balk-ring into
the sleeve for meshing the clutch-teeth on the
axially abutting relation with one series, and into
axially aligned relation with the spaces between , sleeve and on the wheels‘.
10. Clutch mechanism comprising, a pair of co
the ‘teeth of the other series, of clutch-teeth on 35
axial drive-wheels for driving at different speed i
the sleeve and controlling the relative axial
'ratios, each provided with an annular series of
movement for slidably meshing the clutch-teeth
internal clutch-teeth, an axially slidable clutch
sleeve between and adapted to be driven by said
axial drive wheels for driving at different speed 40 wheels and integrally provided with a pair of
annular series of external clutch-teeth, spaced
ratios, each provided with an annular series of
on the sleeve and the wheels. ’
I
~
8. Clutch mechanism comprising, a pair of co
internal clutch-teeth, a clutch-sleeve axially slid
able between and adapted to be driven by said
apart longitudinally, for slidable meshing with
the teeth on the wheels, respectively, the teeth of:
wheels and provided with‘ a pair of annular series
one series of clutch-teeth on the sleeve being cir
cumferentially offset relatively to the other, a
- of external clutch-teeth spaced apart longitu
dinally, for slidable meshing with the teeth on
the wheels, respectively, a balk-ring extending
circumferentially around and rotatable on the
clutch-teeth on the sleeve and through which the
sleeve is slidable, provided with a circumferential
series of’ internal teeth adapted to alternately
balk-ring extending circumferentially around and
rotatable on the clutch-teeth on the sleeve and.
relatively to which the sleeve is rotatable and
slidable, integrally provided with a circumferen50 tial series of internal teeth adapted to alternately mesh with and to pass axially between the
teeth of the pair of series of clutch-teeth on the
mesh with and to pass axially between the teeth
sleeve upon relative axial movement ofthe balk-i
of the pair of series of clutch-teeth on the sleeve
ring and the sleeve with arcuate spaces between
upon relative axial movement of the balk-ring
and the sleeve, with arcuate spaces between some 55 some of said teeth on the balk-ring, abutments
integral with the outer periphery of the clutchof said teeth in the balk-ring, abutments 0n the
sleeve axially disposed between the series oi‘
outer periphery of the clutch-sleeve axially dis
clutch-teeth on the sleeve and extending into said
posed between the series of clutch-teeth on the
arcuate spaces for limited relative rotation when
sleeve and extending into said arcuate spaces for
limited relative rotation when the teeth on the 60 the teeth on the balk-ring are positioned axially
between the series of clutch-teeth on the sleeve.
balk-ring are positioned axially between the se
conoidal friction-faces on the ends of the balk
- ries of clutch-teeth on the sleeve, conoidal frlcring and mating friction-faces on the wheels, for
tion-faces on the ends of the balk-ring and mating
producing relative rotation of the balk-ring and
friction faces on the wheels, for producing rela
tive rotation of the balk-ring and clutch-sleeve 65 clutch-sleeve to alternately move the teeth on the
balk-ring into axial "abutting relation with one
to alternately move the teeth on the balk-ring
series, and into axial aligned relation with the
into axial abutting relation with one series, and
spaces between the teeth on the other series, of
into axial aligned relation with the spaces be
the clutch-teeth on the sleeve and controlling
tween the teeth on the other series, of the clutch
relative axial sliding movement of the sleeve for
teeth on the sleeve and controlling relative axial
sliding movement of the sleeve for meshing its 70 meshing the clutch-teeth on the sleeve on the
wheels.
clutch-teeth and the clutch-teeth on the wheels.
ERNEST _T. GILLIARD.
9. Clutch mechanism comprising, a pair of co
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