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Патент USA US2127384

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Aug?. 16, 1938. f
. l
Filed May 22, 193s
3 sheetsßsheet 1
Aug. 16, 1938.
’ Filed May 22, 19:56
3 Sheets-Sheet 2
" .3»
E” W.'
Aug. 16, 1938.
2, 7,384
Filed May 22, 1936
3 Sheets-Sheet' 3
Patented Aug. 16.1938
2,121,384 -
PA'TIaIPJTv osi-‘lcs
` uNi'rEn STATES
-» ¿421.384
Mo'roacrcm enema 'rnANsmssloN
Mark W.>Anthony. Tyler, Tex.
' Appumipn my zz, 193e. serai N6. 81,317
(cl. 12s-'191)
6 Claims.
a sleeve I8 disposed in- surrounding relation4 to
The object ofzthe »invention is to provide a
motorcycle engine transmission in which the-
the power transmission shaft I2 and motion is
communicated to it through the crank shaft by
`transmission shaft is carried in the crank-case
in common with >the crank shaft, so that the l ~means of a chain Il traversing sprockets 20 and
2| mounted respectively on the crank shaft II 5'
Vand cam shaft or sleeve Il.
The power shaft lz 1s actuated from the cam
shaft It through‘the instrumentality of _a clutch
are carried at the transmission side of the crank
case and rotated in timed relation to the crank ` 22 of the friction disk form whose driving ele
10 shaft; to provide a transmission construction in ment is carried by the cam shaft I8 and whose l0
which the cam shaft is an- element of the power drivenelement is connected with the transmis
shaft but susceptible of being released from the sion or power shaft I2, the clutch being kept
normally inclutching engagement by means of'
latter; and generally to provide amotorcycle en
gine construction which is of simple form and the springs 23 and being shifted to releasing po
sition by means of a push rod 2l which extends l5
'15 therefore susceptible of cheap manufacture.
through a bore inthe power shaft and carries a
With this object in view, the invention con
sists in a construction and „combination of parts ball bearing thrust 25 engaging the spring
of which a preferred embodiment is illustrated lpressed element of the clutch.
At the Vendof the power shaft remote from the
in the accompanying drawings but to which em
20 bodiment the invention is not to be restricted. clutch 22, the push rod projects a sufllcient dis- f2()
.5 construction 'as a whole may be condensed into
small compass; to provide a construcion'of the
kind indicated in which the valve operating ’cams
tance to permit axial movement being imparted
to it through the instrumentality of a ilnger 26
Continued use in Vpractice may dictate certain
changes or alterations and the right is-claimed
to make any which fall within the scope of the . which bears on the end of the rod and is de' 25
rod 21 by which it is carried.
In the drawings:
Figure 1 is a vertical longitudinal sectional
view of a motor vehicle constructed in accord
ance with the invention.v
and lll which are carried on a common hub and
30 cated by the line 2-2 of Figure l.
therefore constitute an integral assembly. The
gear 28 meshes with a gear In formed asl an ele- 30
Figure 3 is a transverse vertical sectional view
of a modified form, this view being taken in the
plane of the vertical diameter of the transmis
Figure 4 is a sectional view on the plane indi
.cated by the line l-I of Figure 3.
counter-shaft 2l are the counter-shaft gears 29
- '
Within the crank-case I0 and mounted on a
Figure 2 is a sectional view onthe plane indi
sion shaft.
signed-to be normally actuated by' rotating the
annexed claims.
ment of a sleeve II which surrounds the trans
mission shaft and rotates" relative> to the latter
but constitutes the journal for this .end of the
counter-shaft being carried in a bearing 82 in the
crank-case and extending through the latter so 35
that it may carry the sprocket 33 over which the
FigureäisaviewsimilartoFigu'reBhut 'of vehicle drive chain is trained. When rotary
still another modiñcation.
movement is imparted to the gear It therefore
Figure 6 is a detail sectional view of the ‘cam’ driving power is communicated to the sprocket '
40 drive illustrated in Figure 5 taken in a vertical 33.
’ plane diametrically of the cam shaft.
The gear 29 meshes with a gear 34 carried by
Figure 'I is a sectional view on the plane indi
the transmission shaft I2 relative to which it
cated by the line ‘|-1V of Figure 6.
freely except when clutched to the same.
Figure 8 is a sectional view on the plane indi
And either it or the gear 30 may be clutched to 45
45 cated by the line 8-8 of Figure 3.
The invention contemplates the arrangement the transmission shaft since both of these gears,
in parallel relation and in a common crank-case on their facing sides. are formed with clutch ele
I0 of the crank shaft II and transmission sh'aft ments designed to be selectively engaged with the
clutch member 25 which is mounted on the trans
I2 of the engine or motor whose cylinder Il sur
mission shaft between the gears 2U and ll and 50
' l 50 mounts 4the crank-case and is .of the usual air
is axially movable of the transmission shaft but
cooled variety and equipped with the conven
„ , tional inlet and exhaust valves actuated by push `precluded from angular or turning movement
rods i5 bearing respectively on the cams I8 and with respect thereto, as by being keyed to the
transmission shaft. Shifting of the clutch mem
55 V'l‘he‘cams il and I1 are formed as elements oi' ber Ii is accomplished by means of the shifter '55
38 which is provided with any sui? ible actuating
means 31.
The transmission or power shaft i2 extends
far enough through the sleeve 3i to provide a
mounting for the starting gear 38 which is op
eratively connected with the transmission shaft
through a conventional overrunning clutch I9, or
its equivalent, so that if movement is imparted
to the gear 38, the transmission shaft will be
turned as a result, whereas if the transmission
shaft is turning from power derived from the
motor, the gear may remain at rest. In m'esh
with the gear 28 is a segment 48 designed to
have an angular or turning movement imparted
to it through the starting treadle Il.
In starting the motor, the elements of the
intermediate and full transmission shaft speed '
to the sprocket 62.
The clutch 53 is interposed between the trans
mission shaft 52 and the cam shaft 61 which is
in the form of a sleeve loosely surrounding the Cî
transmission shaft.
The cams 65 respectively actuate rockers 68 '
and 69 which in turn respectively actuated the
intake and exhaust valve push rods 10 and 1|.
-In that form of the invention illustrated in
Figure 5, the construction is modified to the ex
tent of having the drive clutch 80, which is sub
stantially identical to the drive clutch 53, con
nected with and driving anelement of the trans
mission shaft, this element being in the form
of a short tubular shaft 8| in which the pilot
clutch 22 will be engaged but the clutch mem
82 of the main portion of the transmission shaft
ber 3l will be in neutral position. Depression ' 83 is received. The cams 84, which operate the
of the started treadie 4| will impart angular valve rockers are identical in contour with the
20 movement to the sector 40 which, through the
cams 65 which are preferably integrally formed
gear 38, will effect angular or turning move
on a sleeve extension 85 of the driving member
ment of the transmission shaft I2, turning move
of the clutch 88, the shaft 8| rotating in the
ment to the cam shaft I8 being imparted through sleeve extension of the clutch, which sleeve ex
the clutch22. But with the turning of the cam . tension rotates on anti-friction bearings in the
25 shaft, the crank shaft will also be turned -and
wall of the transmission case 86.
the motor will be set in operation. But then the
A gear 81 .carried at the end of the shaft 8i
transmission shaft will turn through power de
and integral with or secured thereto is provided
rived from the cylinders. Starting of the ve
with clutch lugs on one side and this gear meshes
hicle is accomplished by first releasing the clutch
with the gear 88 on a counter-shaft 89 substan
30 22 by actuation of the rod 2l through its finger
tially identical with the counter-shaft 54. The
28, sothat the clutch member 35 may be shifted
into engagement with the lgear Il, when the
sprocket 33 will be turned from its transmission
gear 88 is mounted in common with the gears
90 and 9i on a sleeve 92, the gear 9| meshing
with a gear 93 floating on the section 83 of the
shaft through the gear train 34, 28, 38a and 39,
transmission shaft, this portion of the transmis
sion shaft extending to the exterior of the trans
mission case 86 and carrying the drive sprocket
94. The section 83 of the transmission shaft is
splined, as indicated at 95, so that the gear 96,
which is mounted on this section of the shaft,
may move axially with reference to the trans
mission shaft but not angularly with respect
thereto. The gear 96 is provided with clutch lugs
on opposite faces so that it may be interlocked
either with the gear 81,' or interlocked with the
35 thus giving a lower angular speed to the sprocket
Il than that at which the transmission shaft
turns. Shifting to high speed is accomplished
by first declutching. as aforesaid. and then shift
ing the clutch member 35 into‘ engagement with
the gear 2l, when the angular speed of the sprock
et 38 will be the same as that at which the trans
mission shaft turns.
In that form of the invention illustrated in
Figure 3, synchronous'operation of the crank
shaft and transmission shaft is effected by a
positive operative connection between the two
which may be in the form of a chain traversing.
sprockets on the two shafts or in the form of a
gear couple of which the driver 88 is carried by
the crank shaft and the driven Il by the tra’ns
gear 82.
In the construction shown in Figure 5, the
countershaft gears are constantly rotating when
the clutch is in and the engine in motion but
the shaft section 83 is either at rest or in mo
tion, depending on the position of the gear 96.
mission shaft 32 exterior to the clutch 53 with ` If it is interlocked with the gear 93, the shaft
section 83 and drive sprocket 94 rotate at the
which the transmission shaft is equipped. Dis
lowest speed. since the drive is then from the
posed below the transmission shaft is a counter
clutch to the gear 81, to the gear 88, the gear 9|,
55 shaft N on which are rotatably mounted the
gear 83 through the keyed connection to the
gearsl Il, I8 and l1 which areformed as inte
transmission shaft section 83. Intermediate
gral elements .of a common sleeve I8 but are
spaced from each other. 'I‘he gear l1 is in 'mesh speed is secured by effecting meshing of the gear
86 with the gear 98; high speed by interlocking
with a gear Il carried by a sleeve 88 which is the
gears 96 and 81.
iournaled in appropriate bearings in the trans
invention having been described, what is
mission case 8|, so that the sprocket 82 which
claimed as new and useful is:
» carrics the vehicle driving chain may be driven
thereby.> The gear Il is formed on one side with
integral spaced lugs constituting the elements
of a clutch. The gears 83 and M, mounted on a
common hub, -are carried on the transmission
shaft i2 between the cams Il and the gear 89
and are axially movable of the
on shaft
but not angularly movable thereof. the hub of
l. Mechanism for the purpose indicated com
prising a crank shaft, a rotary member opera
tively connected with the crank shaft for rota
tion in timed relation with the latter, valve 0p 65
erating cams mounted on the rotary member for
actuating inlet and exhaust valves, a ltransmis
sion shaft having its axis ’of rotation in com
mon with that of said member and operative70 the gears 83 and I4 carryingfa key slidable in connections between said member and the trans
a spline I8 formed in the ton shaft. mission shaft for controlling rotation of the lat
'I‘he gear unit 83-34 may be shifted to-mesh. ter independently of the cams.
the gear il with the gear 88 or the gear 8l with
2. Mechanism for the purpose indicated com
the geaì' 88, or to effect direct clutching with the prising a crank-case, a crank shaft .mounted in
75 gear i8, which arrangement provides for low, the crankcase, a transmission shaft mounted 75
in the crank-case in parallelism with the crank
shaft, a sleeve member surrounding and rotat
ing relative to the transmission shaft o-perative
connections between the sleeve member and
crank shaft to drive the two in timed relation,
valve cams mounted on the sleeve member, and
a clutch interposed between the- sleeve member
and the transmission shaft to control the latter
mission sprocket, and selective transmission
gearing operatively connecting the transmission
independently of the cams.
shaft with said sprocket.
3. Mechanism for the purpose indicated 'com
prising a crank shaft, a transmission shaft ar
ranged parallel to and ‘operatively connected
with the crank shaft to be driven by the latter,
valve operating _cams having axes of rotation
coincident‘with the axis of the transmission shaft
and operatively connected with the crank shaft
to be driven in timed relation with the latter,
and means releasably effecting an operative conv
nection between the crank shaft and said trans
li. Mechanism for the purpose indicated com
prising a crank shaft, a transmission shaft, a
casing enclosing the two, valve actuating‘cams
mounted coaxially on the transmission shaft,
prising a crank~case, a crank shaft rotatably
mounted in the crank-case, a transmission shaft,
a sleeve surrounding said transmission shaft and
formed with valve operating cams, a positive driv
ing connection between the crank shaft and the
cam sleeve, a clutch operatively connecting the
cam sleeve with the vtransmission shaft. a trans-_
releasable operative connections between the
cams and the transmission shaft, and a positive
driving connection between the crank shaft and
the cams.
5. Mechanism for the purpose indicated coin
6. Mechanism for the purpose indicated com
prising a crank case, a' crank shaft rotatably
mounted in the crank case, a sleeve paralleling
the crank shaft and rotatably mounted in the
crank case, positive driving connections between 15
the' crank shaft and sleeve to effect movement
of the'latter in timed relation with the former,
valve actuating cams formed on the sleeve, a
transmission shaft surrounded by the sleeve, a
clutch controlled driving connection between the 20
sleeve and the transmission shaft, a counter
shaft paralleling the transmission shaft, a series
of gears of different diameters carried on the
counter-shaft, gears carried on the transmission
shaft and arranged in couples with those on the
counter-shaft, and means for selectively effecting
positive driving connections with the transmis
sion shaft of those gears carried by the latter.
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