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Патент USA US2128477

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Aug. 30, 1938.
'
c. scHLossER, JR
2,128,477,.
CONSTANT MESH VARIABLE SPEED GEAR DRIVE
_ Filed May 28, 1957
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Aug. so, 1938.
2,128,477
C. SCHLOSSER, JR
CONSTANT MESH VARIABLE SPEED GEAR DRIVE '
Filed May 28, 1937
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Aug. 30, 1938.
c. SCHLOSSER, JR
2,128,477
CONSTANT MESH VARIABLE SPEED GEAR DRIVE
Filed May 28, 1957
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2,128,477
Patented Aug. 30, 1938
ArsNr orrici:
UNITED ,STTES
2,128,477
CONSTANT MfESI-I VARIABLE SPEED‘ GEAR.
DRIVE
Chalmer Schlosser, Jr., Indianapolis, Ind.
Application May 28, 1937, Serial No‘. 145,169
15 Claims.
the shaft I‘! to be revoluble freely independent of
able speed transmission unit to be employed be
either the gear 12 or the gear [6.
A spider I9 is mounted on the shaft 1 1 between
tween a source of power and a device operated by
that power. It has for a primary object an au
5 tomatically variable gear ratio between the driven
object and the source of power depending princi
pally upon the rate of speed of the power input
driving member operating in conjunction with a
control device.
10
'
A further important object of the invention re~
sides in its extreme simplicity and adaptability to
a wide range of uses. These and further objects
and advantages will become apparent to those
skilled in the art in the following description of
15 the invention as more or less diagrammatically
illustrated in the accompanying drawings. in
which:
Fig. 1 is a top plan view of a structure embody“
ing the invention;
20
(Cl. 74—282)
This invention relates to a constant mesh vari
Fig. 2, a vertical transverse section on the line
2—2 in Fig. 1;
arms is mounted a small bevel gear 20 of the
proper diameter .and tooth formation to be in
constant mesh with the opposing teeth of the
gear l2 and the wheel l8. In other words the 101
gear [2, wheel “3, and the intermediate gears 29
form a differential gearing. The spider l9 has its
arms extending on through the gears 20 to carry
a spur gear 2! concentric with the gear l2 and
wheel 48, the gear 2! having a larger diameter 15
than that of the gear i2.
This gear 2!, Fig. 4, is in constant mesh with an
intermediate pinion gear 22 which is mounted on
a stub shaft 23. The gear 22 in turn is in constant
mesh with a gear 24 which is fixed on a jack shaft
25 which extends parallel to the shaft ll to have
Fig. 3, a vertical transverse section on the line
3—3 in Fig. 1;
the gear l2 and the'wheel E8 to be freely revoluble
therearound. In the form herein shown, this 5,
spider l9 carries three arms, on each of which
-
Fig. 4, a vertical transverse section on the line
25 4—4 in Fig. 1;.
3 through
Fig. 5, a detailed
a controlsection
clutch,onand
the line 5-5 of
Fig. 6, a top plan view of a modi?ed form of the
invention.
30
Like characters of reference indicate like parts
throughout the several views in the drawings.
A power shaft Hi is revolubly mounted in any
suitable manner, here shown as in the bearing
block H and carries a bevel gear B2 in ?xed rela
35 tion thereon. In axial alignment with the shaft
I6 is a driving shaft I3 likewise suitably revolubly
mounted, here shown as through the bearing block
M. The shaft 53 has a spur gear Hi ?xed thereto
and on that face of the gear 55 directed toward
40 the gear i2 is a bevel gear I 6 carried in ?xed rela
a gear 26 ?xed on its other end and in constant
mesh with the gear I5. The shaft 25 is revolubly
supported by any suitable means such as by the
bearing blocks 2'! and 28 in the form shown, Fig. 25
1.
Between the wheel l8 and the bevel gear I6 is
a spider 29, Fig. 3, revolubly mounted on the
shaft H, to carry revolubly on each of its arms,
here shown as three in number, a bevel gear 30 30
each in constant mesh with the teeth of the wheel
l8 and of the gear l6 thereby forming a second
differential gearing with the wheel I8 in common
with both sets. The arms of the spider 29 extend
on through and beyond the gears 30 to carry a
worm wheel 3! concentrically of the shaft H. In
constant mesh with the teeth of the wheel 31 is a
worm 32 mounted on a transverse shaft 33, the
tion with the gear E5, the gears 52 and‘ it} being
shaft 33 being revolubly carried between the hear
ing blocks 34 and 35, Fig. 3.
40
One end of the shaft 33 is interconnected in
spaced apart one from the other. An idler shaft
I? is carried between the opposing ends of shafts
driving relation with an electric motor 33 here
shown as through the reduction gears 31 and 38,
it and I3, here shown as entering into bores in
45 the respective shaft ends.
Mounted on the shaft i7 is a wheel E8 having
teeth out on both sides thereof to form in effect
a bevel gear opposing but spaced from the gear
82 on the one side and spaced from and opposing
the gear 65 on the other side. The wheel 58 is of
the same effective diameter as that of both the
these gears being adjacent the bearing block 35.
On the other end of the shaft 33 adjacent the
bearing block 36 is ?xed a clutch plate 39‘. A stub
shaft 40 is mounted in axial alignment with the
shaft 33 and carries in ?xed relation thereon a
clutch plate 4! adjacent the clutch plate 39 and
separated therefrom. Normally, the shafts 33 and
“it are interconnected in driving relation initially
vwheels l2 and i6 and carries the same number of
by friction blocks 42, Figs. 3 and 5, normally
pressed between beveled edges of the plates 39
teeth on each of its sides as do the representative
65 wheels I 2 and iii. The wheel I8 is mounted on
nation of shafts 33 and 40 reach a predetermined
and M by a tension spring 43. When the combi
55
2
2,128,477
speed, the driving connection therebetween af
thrown outwardly by centrifugal force by bring
forded by these blocks $2 is interrupted by reason
of the centrifugal effect throwing the blocks 42
outwardly in opposition to the pull of the spring
43 su?iciently to relieve the frictional engage
ment of these blocks 42 between the two plates 39
and 4!. When this disconnection between the
shafts 33 and 56 is not desired, such for example
ing the speed of the shaft in up to that required
for that result, the lever d5 having been shifted
to permit that action. Simultaneously the motor
36 is interconnected with its source of current,
the battery 53 in the present instance, so that
the motor 36 then turns the Worm wheel 3i, the
speed of the worm wheel then being controlled
exclusively by the speed of the motor 35. A Wide
Variation in speed ratios between the shaft W and 10
the shaft l3 may be obtained by operating the
as when the invention may be employed in an
10 automobile and the engine is being initially set in
motion, the clutch blocks 122 are maintained in
frictional engagement with the two plates in
spite of centrifugal effort tending to remove them.
This result is obtained in any suitable manner,
15 one such method being herein shown as by sur
rounding the ring of weights 42 by a conical drum
44 in such manner that the drum may be shifted
longitudinally of one of the shafts, herein shown
as of the shaft 610, whereby upon shifting the drum
away from the plates, the blocks 42 are permitted
to be freely acted upon by centrifugal force and
when the drum is shifted toward the plates, the in
terior wall of the drum comes into contact with
the outer sides of the block 42 and thereby pre
25 vents movement outwardly of the blocks. This
shifting of the drum 44 may be accomplished in
any suitable manner, one such method of opera-
tion being by a simple lever 45, Fig. 1, having an
end engaging within a collar 45 extending from
30' the drum 44.
The stub shaft 40 is connected in driving rela
tion with the shaft H] by any suitable means,
here shown as by a bevel gear 41 meshing with
v a bevel gear 48 on a shaft 49 which in turn car
35
motor 36 at a constant speed. This variation in
ratio as the shaft 33 is disconnected from the
shaft lit! and .the motor 3%) is controlling, is then
obtained simply by varying the speed of the shaft 15
Ill. For example, by increasing the speed of the
shaft ll], holding the motor 36 at a constant
speed, the shaft i3 is stepped up in speed to a
greater degree or number of revolutions in pro
portion to the increase in speed of the shaft it. 20
This will hold true through quite a range of
increases in the speed of the shaft iii. A further
variation in the actual speed ratios between the
shaft iii and the shaft i3 is obtained by varying
the speed of the motor 36 through the rheostat
M which causes a variation in speed of course of
the Worm Wheel ill and therefore a variation be
tween the wheel 18 and the gear iii.
In any event the invention fundamentally con -
prises a pair of differential gears wherein the 30
pinion gears of one set are bodily shifted around
the driving axis with either a constant or variable
speed. While the invention has been more or
less minutely described in the one particular
ries a sprocket 58 about which passes a chain 5!
form as shown in Figs. l-5, it may equally as '
driven by a sprocket 52 secured on the shaft lil.
well be embodied in the modi?ed form as shown
in Fig. 6. In this form, the driving shaft H3 is
?xed to the bevel gear E2 to have the differential
pinion gears 28 in constant mesh with the gear
l2 and the opposing gear 55. In this case, how
ever, the opposing bevel gear 55 is ?xed to the
driven shaft l3 directly. On the extended arms
of the spider I9 is carried the spur gear 2! as in
the ?rst form. This spur gear M is in constant
Therefore, it can be seen that when power is
initially applied to the shaft ID, the shaft 33
and consequently the worm 32, will be revolved
40 to in turn revolve the worm wheel 3|. With the
proper speed ratio between the shaft Hi and the
worm wheel 3!, obtained through the intercon
necting members above described, power may be.
initially applied to the shaft Hi to permit the
45 shaft 93 to remain stationary as would be de
sirable in the case of starting an engine in an
automobile so that the engine could be set in
mesh with a spur gear 56 which drives in ?xed 45
operation such as at idling speeds before power
therefrom is applied to the driving wheels. So
far in the foregoing description the electric motor
36 has not been set in operation and the initial
application of power to the shaft l0 not only
the bevel gear 57 and an opposing like bevel gear
58, are mounted pinion gears 59 in constant mesh
therebetween to have an encircling worm wheel 50
serves to drive the worm 32 but will actually
turn the armature in the motor 36.
The motor 36 receives current from any suit
55
able source depending upon the application of
the invention. Where the invention is to be
applied to an automobile, current for operating
the motor 35 will be taken initially from the bat
relation thereto the bevel gear 5i, being in the
present form an integral part thereof. Between
(it concentrically around the spider carrying those
gears 59. The worm wheel fail is in constant mesh
with a worm 32 which is operated in exactly the
same manner as in the form shown in Figs. 1-5
to be selectively driven either from the power
shaft ill or ‘from the electric motor 35 as above
described. The worm 32 in any event operates
as a governor or control of the speed of the worm
tery 53, Fig. l, with a rheostat 54 included in
wheel 6!] and does not contribute nor subtract
from the power transmitted in the shaft ill to
the circuit for cutting off entirely the flow of
the shaft
current and varying it to the maximum flow as
may be desired. In the initial application of
power to the shaft I0 as above indicated, the
driven shaft l3 remains stationary as do also
the gear l5, gear 66, and gear 2!. The Worm
wheel 3! revolves to carry the gears 39 bodily
around between the stationary gear l6 and the
wheel l8. Since the worm wheel 3! is turned in
Further, in the form shown in Fig. 6, the bevel
gear 58 is carried in ?xed driving relation with
constant relation to the speed of the shaft in
employed as before, the governor being applied to 70
as long as the clutch interconnects the shafts 33
one set as in the ?rst form described.
While I have herein shown and described my
invention in the best form as now known to me,
and M1, variations-in the speed of the shaft Iii
will be without effect on the driven shaft l3.
However, when the shaft [3 is to be set in
35 motion by the shaft Ill, the clutch blocks A2 are
l3.
.
'
-
a pinion gear 6!, herein shown as being an in
tegral part thereof.
The gear 6! in turn is in 65
constant mesh with an intermediate gear 62
which in turn is in constant mesh with a gear
63 mounted on and ?xed to the driven shaft I3.
In this modi?ed form, the two differentials are
it is obvious that structural variations may be
employed without departing from the spirit of 75
3.
2,128,477
the invention, and while the claims refer to
“gears”, that language is intended to include the
equivalents thereof, and I therefore do not desire
to be limited to that precise form beyond the
limitations as may be imposed by the following
claims.
I claim:
1. A transmission unit between a driving mem
ber and a driven member comprising a differential
gearing, a second differential gearing, each of
said gearings consisting of a pair of spaced apart
differential gears with pinion gears constantly
meshed therebetween, an annulus shiftable with
the pinion gears relative to the gears of one dif
. ferential, a second annulus shiftable with the
pinion gears of the second differential gears,
means for revolving one of said annuli, means
operating said revolving means, a differential gear
of one differential gearing being drivingly con
. nected to said driving member, and a differential
gear of the second differential gearing being driv
ingly connected to the driven member, said revolv
ing means being formed to be operable during
movement of the driving member, said operating
H means consisting of a power unit independent of
50 -;
said driving member, additional driving means
interconnecting with said revolving means and
said driving member, and disconnecting means
between said revolving means and said driving
member.
2. A transmission unit between a driving mem
ber and a driven member comprising a differential
gearing, a second differential gearing, each of said
gearings consisting of a pair of spaced apart dif
; ferential
gears with pinion gears constantly
meshed therebetween, an annulus shiftable with
the pinion gears relative to the gears of one
differential, a second annulus shiftable with the
pinion gears of the second differential gears,
means for revolving one of said annuli, means
operating said revolving means, a differential gear
of one differential gearing being drivingly con
nected to said driving member, and a differential
gear of the second differential gearing being
drivingly connected to the driven member, said 10
revolving means being formed to be operable
during movement of the driving member and a
driving connection between the annulus of the
?rst differential gearing and said driven member,
said operating means being independent of said
driving member, and means varying the speed of
said operating means whereby said revolving
means may revolve its connected annulus at dif
ferent speeds.
5. A transmission unit between a driving mem
ber and a driven member comprising a differential
gearing, a second differential gearing, each of
said gearings consisting of a pair of spaced apart
differential gears with pinion gears constantly
meshed therebetween, an annulus shiftable with 25
the pinion gears relative to the gears of one dif
ferential, a second annulus shiftable with the
pinion gears of the second differential gears,
means for revolving one of said annuli, means
operating said revolving means, a differential gear 301
of one differential gearing being drivingly con
nected to said driving member, and. a differential
gear of the second di?erential gearing being
drivingly connected to the driven member, said
revolving means being formed to be operable dur 353
meshed therebetween, an annulus shiftable with
ing movement of the driving member, and a driv
the pinion gears relative to the gears of one dif
ferential, a second annulus shiftable with the
pinion gears of the second differential gears,
means for revolving one of said annuli, means
operating said revolving means, a differential gear
of one differential gearing being drivingly con
nected to said driving member, and a differential
gear of the second differential gearing being
drivingly connected to the driven member, said
revolving means being formed to be operable
during movement of the driving member and a
driving connection between the annulus of the
?rst’ differential gearing and said driven member.
3. A transmission unit between a driving mem
ber and a driven member comprising a differential
gearing, a second differential gearing, each of said
ing connection between the annulus of the ?rst
differential gearing and said driven member, said
operating means being independent of said driv
ing member, and driving means selectively inter 40
connected with said revolving means from said
gearings consisting of a pair of spaced apart dif
ferential gears with pinion gears constantly
- :11 meshed therebetween, an annulus shiftable with
the pinion gears relative to the gears of one dif
ferential, a second annulus shiftable with the
pinion gears of the second differential gears,
means for revolving one of said annuli, means
to operating said revolving means, a differential gear
of one differential gearing being drivingly con
nected to said driving member, and a differential
gear of the second differential gearing being
drivingly connected to the driven member, said
revolving means being formed to be operable
during movement of the driving member and a
driving connection between the annulus of the
?rst differential gearing and said driven member,
said operating means being independent of said
driving member.
4. A transmission unit between a driving mem
ber and a driven member comprising a differential
gearing, a second differential gearing, each of said
gearings consisting of a pair of spaced apart dif
ferential gears with pinion gears constantly
driving member.
1
6. A transmission unit between a. driving mem
ber and a driven member comprising a differential
gearing, a second differential gearing, each of said
gearings consisting of a pair of spaced apart dif
ferential gears with pinion gears constantly
meshed therebetween, an annulus shiftable with
the pinion gears relative to the gears of one dif
ferential, a second annulus shiftable with the 50
pinion gears of the second differential gears,
means for revolving one of said annuli, means
operating said revolving means, a differential
gear of one differential gearing being drivingly
connected to said driving member, and a dif 55
ferential gear of the second differential gearing
being drivingly connected to the driven member,
said revolving means being formed to be operable
during movement of the driving member and a
driving connection between the annulus of the 60
?rst differential gearing and said driven member,
said operating means being independent of said
driving member, and driving means selectively
interconnected with said revolving means from
said driving member, and means automatically 65
disconnecting said last driving means from said
revolving means at predetermined speeds.
'7. A transmission unit between a driving mem
ber and a driven member comprising a differen
tial gearing, a second differential gearing, each 70
of said gearings having spaced apart differential
gears and pinion gears constantly meshed be
tween each set of spaced apart differential gears,
an annulus mounted to be revoluble in relation
to one set of said differential gears by the pinion
4
2,128,477
gears therebetween, a second. annulus mounted
to be revoluble in relation to the other set of
differential gears by the pinion gears therebe
tween, one differential gear of the said ?rst gear
ing being drivingly connected to said driving
and further drivingly interconnected, governing
means interconnected with the second annulus
whereby the speed of that annulus may be con
ing being drivingly connected to said driven
trolled, said annulus of the ?rst gearing being
drivingly connected with said driven member,
member, the other two differential gears being
placed intermediate the gears thus connected
said connection between the ?rst annulus and
the driven member being formed to have both
member, one differential gear of said second gear
10 and further drivingly interconnected, governing
means interconnected With the second annulus
whereby the speed of that annulus may be con
trolled, said annulus of the ?rst gearing being
drivingly connected with said driven member.
15
member, the other two differential gears being
placed intermediate the gears thus connected
8. A transmission unit between a driving mem
ber and a driven member comprising a differen
tial gearing, a second differential gearing, each
of said gearings having spaced apart differential
gears and pinion gears constantly meshed be
20 tween each set of spaced apart differential gears,
an annulus mounted to be revoluble in relation
to one set of said differential gears by the pinion
gears therebetween, a second annulus mounted
to be revoluble in relation to the other set of
25 differential gears by the pinion gears therebe
tween, one differential gear of the said ?rst gear
ing being drivingly connected to said driving
member, one differential gear of said second gear
ing being drivingly connected to said driven
30 member, the other two differential gears being
placed intermediate the gears thus connected
and further drivingly interconnected, governing
means interconnected with the second annulus
whereby the speed of that annulus may be con
35 trolled, said annulus of the ?rst gearing being
drivingly connected with said driven member
through said second differential gearing.
9. A transmission unit between a driving mem
ber and a driven member comprising a differen
40 tial gearing, a second differential gearing, each
of said gearings having spaced apart differential
gears and pinion gears constantly meshed be
tween each set of spaced apart differential gears,
an annulus mounted to be revoluble in relation
45 to one set of said differential gears by the pinion
gears therebetween, a second annulus mounted
to be revoluble in relation to the other set of
differential gears by the pinion gears therebe
tween, one differential gear of the said first gear
50 ing being drivingly connected to said driving
member, one differential gear of said second gear
ing being drivingly connected to said driven
member, the other two differential gears being
placed intermediate the gears thus connected
55 and further drivingly interconnected, governing
means interconnected with the second annulus
whereby the speed of that annulus may be con
trolled, said annulus of the ?rst gearing being
drivingly connected with said driven member
60 around said second differential gearing.
annulus and member revolve in the opposite direc
tion.
10
11. A transmission unit between a driving mem
ber and a driven member comprising a differen
tial gearing, a second differential gearing, each
of said gearings having spaced apart differential 15
gears and pinion gears constantly meshed be
tween each set of spaced apart differential gears,
an annulus mounted to be revoluble in relation
to one set of said differential gears by the pinion
gears therebetween, a second annulus mounted 20
to be revoluble in relation to the other set of’
differential gears by the pinion gears therebe
tween, one differential gear of the said ?rst gear
ing being drivingly connected to said driving
member, one differential gear of said second gear
ing being drivingly connected to said driven
member, the other two differential gears being
placed intermediate the gears thus connected
and further drivingly interconnected, governing
25
means interconnected with the second annulus 30
whereby the speed of that annulus may be con
trolled, said annulus of the ?rst gearing being
drivingly connected with. said driven member,
said governing means comprising a power source
for driving said second annulus independently 35
of said driving member.
12. A transmission unit between a driving
member and a driven member comprising a dif
ferential gearing, a second differential gearing,
each of said gearings having spaced apart differ
40
ential gears and pinion gears constantly meshed
between each set of spaced apart differential
gears, an annulus mounted to’be revoluble in rela
tion to one set of said differential gears by the
pinion gears therebetween, a second annulus 45
mounted to be revoluble in relation to the other
set of differential gears by the pinion gears there
between, one differential gear of the said ?rst
gearing being drivingly connected to said driving
member, one differential gear of said second gear
ing being drivingly connected to said driven mem
ber, the other two differential gears being placed
intermediate the gears thus connected and fur
ther drivingly interconnected, governing means
interconnected with the second annulus whereby 55
the speed of that annulus may be controlled, said
annulus of the ?rst gearing being drivingly con
nected with said driven member, said governing
means comprising a power source for driving said
10. A transmission unit between a driving mem
ber and a driven member comprising a differen
second annulus independently of said driving 60
member, a driving connection between said gov
erning means and said driving member, and
tial gearing, a second differential gearing, each
means automatically interrupting said last con
of said gearings having spaced apart differential
nection at predetermined speeds.
65 gears and pinion gears constantly meshed be
tween each set of spaced apart differential gears,
an annulus mounted to be revoluble in relation
to one set of said differential gears by the pinion
gears therebetween, a second annulus mounted
70 to be revoluble in relation to the other set of
differential gears by the pinion gears therebe
tween, one differential gear of the said ?rst gear
ing being drivingly connected to said driving
member, one differential gear of said second gear
75 ing being drivingly connected to said driven
13. A transmission unit between a driving 65
member and a driven member comprising a dif
ferential gearing, a second differential gearing,
each of said gearings having spaced apart dif
ferential gears and pinion gears constantly
meshed between each set of spaced apart differ 70
ential gears, an annulus mounted to be revoluble
in relation to one set of said differential gears
by the pinion gears therebetween, a second annu
lus mounted to be revoluble in relation to the
other set of differential gears by the pinion gears
75
5
2,128,477
therebetween, one di?erential gear of the said
?rst gearing being drivingly connected to said
driving member, one differential gear of said sec
ond gearing being drivingly connected to said
driven member, the other two diiferential gears
being placed intermediate the gears thus con
nected and further drivingly interconnected,
governing means interconnected with the second
annulus whereby the speed of that annulus may be
10 controlled, said annulus of the ?rst gearing be
ing drivingly connected with said driven member,
said governing means comprising a power source
for driving said second annulus independently of
said driving member and means for varying the
speed of said annulus.
14. A transmission unit between a driving
member and a driven member comprising a differ
ential gearing, a second differential gearing, each
of said gearings having spaced apart differential
gears and pinion gears constantly meshed be
tween each set of spaced apart differential gears,
an annulus mounted to be revoluble in relation
to one set of said differential gears by the pinion
gears therebetween, a second annulus mounted
to be revoluble in relation to the other set of
differential gears by the pinion gears therebe
tween, one differential gear of the said ?rst gear
ing being drivingly connected to said driving
member, one differential gear of said second gear
ing bing drivingly connected to said driven mem
her, the other two differential gears being placed
intermediate the gears'thus connected and fur
ther drivingly interconnected, governing means
interconnected with the second annulus whereby
the speed of that annulus may be controlled, said
annulus of the ?rst gearing being drivingly con
nected with said driven member, around said sec
ond differential gearing, and means incorporated
in said driving connection between the second
annulus and the driven member for causing both
annulus and driven member to revolve in the op
posite direction.
15. A transmission unit between a driving
member and a driven member comprising a
diiferential gearing, a second differential gearing,
each of said gearings having spaced apart diifer
ential gears and pinion gears constantly meshed 10
between. each set of spaced apart differential
gears, an annulus mounted to be revoluble in rela
tion to one set of said differential gears by the
pinion gears therebetween, a second annulus
mounted to be revoluble in relation to the other
set of differential gears by the pinion gears there
between, one differential gear of the said ?rst
gearing being drivingly connected to said driv
ing member, one differential gear of said second
gearing being drivingly connected to said driven
member, the other two differential gears being
placed intermediate the gears thus connected and
further drivingly interconnected, governing means
interconnected with the second annulus whereby
the speed of that annulus may be controlled, said
annulus of the ?rst gearing being drivingly con
nected with said driven member, said governing
means comprising a power source for driving said
second annulus independently of said driving
member, a driving connection between said gov
30
erning means and said driving member, and
means automatically interrupting said last con
nection at predetermined speeds, said automatic
means consisting of a centrifugally operated
clutch.
35
CHALMER SCHLOSSER, JR.
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