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Патент USA US2287279

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June 23, 1942.
E. F. STUMPF
2,287,279
CONTINUOUS POWER TAKEOFF DRIVE
Filed Jan. 16, 1941
//~/ vE/vroze:
EM/l. FSTUMPF
I
?r TOR/VEK
Patented June 23, 1942
2,287,279
UNITED STATE S PATENT
2,287,279
OFFICE
oon'rmuovs'rowaa TAKEOFF DRIVE
Emil
Stumpf, Valmeyer, Ill.
Application January 16,1941, Serial No. 314,734
A
20 Claims.
This invention relates to a continuous power
takeoff drive for tractors whereby machinery
operated by the tractor can be continuously
(0!. 74-11)
the engine shaft before it can be coupled for
direct drive.
_
With these and other objects in View, my in
vention consists in certain novel features of con
struction and arrangement of parts, hereinafter
more fully described and claimed, and illustrated
in the accompanying drawing, in which
operated irrespective of whether the latter is
stationary or moving.
In the operation of a tractor it becomes neces
sary at times to stop the tractor or to drive slow
ly. When a combine or other farm machinery is
Figure l is a side elevation of my power take
driven by a power takeoff shaft which stops or.
off drive mechanism and parts associated there
slows down with the tractor, the combine can 10 with.
.
not be operated in an efficient manner, especially
Figure 2 is an enlarged cross section taken on
when full of unthreshed wheat or other grain.
line 2—2 of Figure 1.
\
.
In my copending application, Serial No.
Figure 3 is an enlarged detail view showing
341,427, ?led June 20, 1940, a continuous power
the safety latch in moved position.
takeoff drive is disclosed which is particularly‘
adapted for use with tractors of the “Oliver”
type wherein the drive shaft of the differential
mechanism is offset with respect to the engine
Referring by numerals to the accompanying
drawing, l0 indicates part of the tractor frame,
H the transmission casing having end walls Ila
and Nb and partition walls Ho and lid, and I2
the differential housing. Mountedv in a housing
Among the main objects of the present inven 20 I4 is one end of the engine shaft 15. A ?y wheel
tion is the provision of a continuous power take
I6 is ?xed on-said shaft and cooperating with
off drive adapted to'be used in tractors of the
said ?y wheel is a clutch means I‘! of usual con
“Allis Chalmers” type in which the drive shaft
struction and operable in the usual manner by a
for the differential mechanism is in a straight
suitable connection I'la. ”
line or axial alignment with the engine shaft.
25
A shaft I8 is disposed coaxially with engine
Another object of the invention is to place
shaft I5 and has one end Illa. slidably mounted
shaft.
>
the transmission counter shaft to one side of
the vertical plane of the aligned shafts to en- '
in a bore formed in the corresponding end of
said shaft l5. Shaft l8 extends into trans
able the location of the power takeoff shaft in a
mission casing ll through end wall Ila thereof
vertical plane with said engine and differential 30 and has its otherend slidably journaled in a
shafts.
ball bearing I 9 mounted in a partition will He
Another object of the invention is to provide
of easing H. A shaft 20 has one end 20a reduced
an intermediate or counter shaft for a power
in diameter and journaled in a bore l8b formed _
takeoff mechanism, which shaft is adapted to
in the corresponding end of shaft l8. This shaft
drive both the power lift shaft and the power 35 20 is journaled in a bearing in partition wall lid
takeoff shaft.
-
Another object of the invention is to provide
' a power takeoff mechanism which can be oper
and extends into the tubular extension l2a of
differential housing I2. The end 20b of said
shaft 20 is secured by a coupling 2| to the corre
sponding end of a coaxially disposed shaft 22.
ated without shifting into neutral when the
tractor is stopped by the usual friction clutch. 40 The latter extends through said housing [2a into
Other objects of the invention are so to mount
the differential housing l2, being journaled in
the power takeoff shaft that it can be removed
bearing 23 and carries a beveled pinion 24 which
without the necessity of dismantling or draining
meshes with a beveled gear 25 of the differential
_ the transmission casing.
mechanism.
45
Another object of the invention is to provide
A tubular shaft 26 is concentrically disposed
a disengageable escapement or dental slip clutch
with shaft l8 and is preferably rotatively
which can be disengaged when making short
mounted thereon and has one end extending into
turns with a tractor pulling power-driven ma
the transmission casing II to receive a pinion 21.
chinery in order to avoid excessive strain on the
A ball bearing 28 is provided for said tubular
50
universal joint.
shaft in the end wall Ila. Pinion 2'l meshes with
A further object of the invention is to provide
a gear 29 which is ?xed on a counter shaft 30
a straight or direct high gear drive between the
journaled in end wall Ilb and partition wall He
engine shaft and the differential mechanism and
and disposed to one side of the vertical plane of
a safety latch whereby the longitudinal shift
the axis of shafts l8 and 2B. A gear 3| is ?xed
able shaft has to be out of disengagement with 55 on shaft 30 near wall lid and gears 32 and 33
2,287,279
' 2
are ?xed on said shaft in spaced relation with
means [1 is in engagement or out of engagement
gear 3|.
with saidensine shaft. -
-
'
‘
_
' slidably mounted on shaft 26, but in non
rotative engagement therewith. are transmission
gears 34, 35 and 38. Gears 34, and 35 are adapted
' to'be shifted in one direction to bring gear 34
>
Shaft 5| can be disconnected fro'm'gear 56 by
means of a hand operated leverv 51 which is
pivoted at 58 on casing 41 and operates a shift
ing fork 59 which engages a collar on said slid
able clutch member 54a and moves the latter
into engagement with gear 3| to provide ?rst
against the tension of the spring 55. The lever
speed, or in opposite ‘direction to bring gear 35
51 can be locked in disengaging position by a
into engagement with gear 32 to provide second
speed. Gear 361s adapted to be moved in one 10 pawl 66 which is adapted to engage a notch in
a stationary segment 6|. A rod 62 is operated
direction into engagement with gear 33 to. pro
in the usual’manner to release said pawl and
vide third speed. Gears 34 and 35 are'operated
' by a shifting fork 31 and gear 36' is'operated'by
permit the clutch member 54a to move into en
gagement with clutch member 54. A housing 64
a shifting‘ fork‘38. Either fork can be shifted in
the usual manner by a‘gear shift lever39. Thus 15 is attached at one end to casing 41 and encloses
said spring 55 and collar 56 and is provided with
a tractor driving connection is established from
a dust shield 65. An elongated slot 66 is formed
the engine shaft I5 through clutch means I1,
in housing 64 for the admission of the forked
tubular shaft 26, gears 21 and 29, counter shaft
end of lever 51.
38, and gears 3|, 32 or 33, with the shiftable
gears 34; 35 or 36, shafts 28 and 22, and pinion 20
The power lift
' ‘.24 and gear-25.
- .To. disconnect the drive,‘ clutch means I1 is
actuated by the-operating connection |1a in the
A gear 61 is ?xed to shaft 46 between partition
walls Md and end wall IIb and meshing with
this gear is a gear 68 ?xed to one section of a
tubular shaft 69. This tubular shaft operates
25
Power takeo?drive
on shaft 22 and is journaled in a bearing 16 in
walls Nd and I lb. One end of said tubular shaft
As stated before, shaft I8 is slidably mounted
terminates in the extension I24; and has formed
in tubular shaft 26. Mounted on said shaft I8
usual manner.
.
thereon a worm 1| which engages a worm gear
between the end of shaft I5 and the correspond
ing end of tubular shaft 26 is a double faced 30 12 ?xed on a power lift shaft 14.
Preferably, tubular shaft 69 is formed in two
clutch element 46 which is adapted to enter into
sections secured together at a point coinciding
engagement either with a clutch element 4 I , ?xed
with coupling 2|, as indicated at 15. Thus the
to the tubular shaft 26, or with a clutch element
power lift mechanism can be ‘operated simul
42 formed on the end of engine shaft I5, as shown
in Figure 1.
35 taneously with both the transmission drive and
the power takeoff drive or in conjunction with
Fixed to shaft I8 in spaced relation with gear
21 and partition wall He is a pinion 44 which
either one or alone.
meshes with a gear 45 ?xed on a counter shaft
Direct drive
When shaft I8 is operated or shifted longitu
dinally to bring the clutch element 40 into en
gagement with clutch element 4|, the inner or
rear end of said shaft is brought against the
corresponding end of shaft 20. This end of shaft
I8 is provided with a plurality of splines 16 which
are identical in size and spacing with similar
splines formed on the transmission shaft 28.
Gear 36 is adapted to be shifted forward by lever
39 to engage said splines 16 while retaining non
46. This shaft is disposed below and in a verti
cal plane with the axis of shaft I8, as shown in 40
Figure 2. and is journaled in bearings disposed
in partition walls He and Ild and end wall III).
This shaftextends through said end wall I ll) into
a casing 41 ?xed to transmission casing II and
to tubular extension I21: and has bearing in said
casing 41. A gear 48 is ?xed onshaft 46 in
casing 41 and meshes with an idler gear 49 jour
naled in said casing below said ?rst gear. This
idler meshes with a gear 56 which is loosely
mounted on a horizontally disposed shaft 5|. 60 rotative engagement with shaft 28, thereby
coupling said shafts together and establishing a
This is the power takeoff shaft and is used to
direct drive between the clutch member I1 and
provide power for operating various machinery
the differential pinion 24.
independently of the transmission drive. One
Shaft I8 is shifted by fork' 11 which engages
end of this power takeoff shaft 5| is journaled in
a bearing 52 in casing 41 and the shaft extends 55 'a collar on gear 44 ?xed to said shaft. This fork
11 is carried by a horizontally disposed bar 18
outwardly and rearwardly from said casing. An
which is slidably mounted in stationary brackets
overload release coupling is used to connect and
19 and has an operating engagement with a
disconnect said shaft 5| from said gear 56. This
manually operated lever 80 pivotally mounted
coupling consists of one element 54 fixed to said
on casing II at 8|. A vertically-disposed spring?
gear and a complementary element 54a slidably
and non-rotatably mounted on shaft 5|. The 60 pressed pin 82 is slidably mounted in one of said
brackets and is adapted to engage one of three
opposed faces of said elements are adapted to be
notches 84 formed in the upper edge of bar 18
interengaged to provide the driving connection.
A coiled spring 55 bears at one end against a Y
so as to yieldably hold said bar in one of three
collar 56 ?xed on said shaft 5| and at the oppo
positions corresponding to the three positions of
shaft I8, namely, engine shaft I5 engaging posi
site end against the slidable element 54a, thereby
forcing it yieldably against the element 54. Thus
tion, neutral or central position, and clutch
means I1 engaging position.
when the double clutch element 46 is in engage
In order to prevent shifting of gear or
ment with clutch element 42, the power is trans
mitted from the engine shaft I5 to shaft I8, 70 coupling member 36 into engagement with shaft
I8, while the latter is in driving engagement with
gears 44 and . 45 to shaft 46, thence through
shaft I5 or in neutral position, safety means are
gears 48, 49 and 56 and overload release coupling
provided which permit the shifting of said gear
54.to power takeo? shaft 5|. As the shaft I8 is
coupling 36 only when said shaft I8 and clutch
in direct engagement with engine shaft I5, shaft
5| is actuated regardless of whether the clutch 75 element 40 are in engagement with the clutch
2,287,279
element 4| of clutch- means ".
This safety.
V
3
.
means comprises a lever 65 pivoted at one end '
to the casing II at 86 and having its opposite
end provided with a downwardly presented finger
\
I
cap (not shown) can be'placed over the project
ing end 46a when casing 41 is removed.
. The differential casing l2 can also be detached
from casing || without opening the latter. ,
87 which normally rides on the upper edge of
bar 18 and holds said end of lever 85 raised and
My improved power takeoff drive is adapted to
be used in tractors having the power delivery or
’ in the path of forward movement of horizontal
bevel pinion 24 in axial alignment with the en
bar 3811 of fork 38. Thus said bar ~38a cannot
gine shaft l5 and permits the power takeoff
be moved forwardly and the gear or coupling 36
shaft to be located below and in a vertical plane‘
cannot be shifted into engagement with the 10 with said aligned axes. The power takeoff shaft
shaft I8.
,
5| can be continuously operated during stopping
A coiled spring 68 is interposed between lever
and starting of the tractor, or it can be stopped
85 and casing II and yieldably forces ?nger 81
simultaneously with the tractor. The driving
against bar 18. When the shaft I8 is shifted
connection between the tubular shaft 26 and the
against shaft 26, the finger 81 drops into a notch
transmission countershaft 30 permits the trans
89 so that said ?nger and the end of lever 85
mission
drive to straddle the driving connection
are disposed belowthe horizontal plane of the
between the shaft l8 and transmission shaft 20
slidable bar 38a and the latter can now be moved
forward.
so that a direct driving connection can be had
-
In starting the power takeoff shaft, the clutch
element 40 is ?rst moved into neutral. The en
gine is then started and friction clutch |1 dis
engaged.
Clutch element 40 is then shifted into ' '
engagement with clutch element 4|. Then clutch
I‘I is-engaged, thus actuating the power takeoff
mechanism and the transmission counter shaft
between said shafts l8 and 20. This straddle
drive also permits the driving connection be
tween the shaft l8 and the countershaft 46 of
the power takeoff drive.
My improved drive mechanism is simple /in
operation and highly e?icient in performing its
intended functions and can be readily applied
to that type of tractor having coaxially aligned
30‘. When the shiftable shaft |8 runs at its nor
mal speed (at same speed as the engine shaft l5)
engine and differential bevel gear shafts.
'
While I have disclosed herein the» preferred
clutch member 40 is shifted into engagement
embodiment of my drive mechanism, it is obvi
with clutch element 42. The power takeoff shaft 30 ous that various changes in the construction and
is now driven from the‘ engine shaft I5 and is
arrangement of parts thereofcan be made with
independent of clutch l1. Thus the power take
out departing from the nature and spirit of my
oif shaft ‘5| is not affected by the disengagement
invention.
of ‘clutch 11 a d is continuously driven at the
I-claim:
required speed, regardless of whether the tractor .
is at standstill or operated at low speed.
The clutch member I'lb is splined on the end
of the tubular shaft 26 and is movable relatively
to the ?y wheel l6. The clutch member He is
slidably mounted on .the hub of clutch member
Nb and is movable'to make and break the driv
ing engagement between said ?y wheel l6 and
the tubular shaft 26, and also shaft l8 when the
latter is interlocked with clutch member |'|b
through said tubular shaft 26.
>
The clutch element 4| rotates with said ‘shaft
26 and clutch member Nb and when engaged by
clutch element‘!!! transmits the power fromvshaft'
,
.
.
- 1. In a tractor having an engine shaft and a
transmission shaft disposed coaxially with each
other; a longitudinally movable shaft disposed
coaxially between said shafts, means for effect
ing driving engagement between said movable
40 shaft and said transmission shaft, a tubular
‘shaft revolubly mounted on said movable shaft,
a clutch means for connecting and disconnect
ing said tubular shaft from said engine shaft,
transmission mechanism actuated by said tubu- ;
45 lar shaft for driving said transmission shaft, a
power takeoff shaft arranged below said trans
mission shaft, and power takeoff mechanism op
erated by said movable shaft and actuating said'
power takeo? shaft.
_ l5 through flywheel I6 and clutch I1 and tubu
lar shaft 26 to said clutch elements 40 and 4| 50
and thence to shaft I8.
The shiftable transmission gears 34, 35 and ’
36 are mounted in the spline end 260 of shaft 20
and are adapted to engage the respective gears
?xed on the transmission counter shaft 30. In
addition, gear 36 acts as a coupling or spline hub
'
>
2. In a tractor having an engine shaft and a
transmission shaft disposed coaxially with each
other; a longitudinally movable shaft disposed
coaxially between said shafts, means for effect
ing driving engagement between said movable
55 shaft and said transmission shaft, a tubular
for interengaging shafts l8 and 26 to provide a -
shaft revolubly mounted on said movable shaft,
a clutch means for connecting and disconnecting
straight drive“ between the engine shaft I5 and
said tubular shaft from said engine shaft, trans
differential bevel gear 24.
mission mechanism actuated by said tubular '
‘
The transmission counter shaft 30 is disposed to shaft for driving said transmission shaft, a power
takeoff shaft arranged below said transmission
to one side of the vertical plane of shafts I8 and
shaft, } power takeoff mechanism operated by
20, thereby permitting the power takeoff counter
said movable shaft and actuating said power
shaft 46 and the power takeoff shaft 5| to be
placed in said vertical plane.
takeoff shaft, and a clutch for disconnecting said
The power takeoff counter shaft 46 is mounted 65 power takeoff shaft from said power takeoff
mechanism.
in casing | | and has one end 46a projecting out
3. In a tractor having an engine shaft and a
ward therefroin into casing 41. The latter is
transmission shaft disposed coaxially with each
removable from casing | I together with the gear
ing contained therein. The end 46a of shaft 46
other; an intermediate shaft disposed‘ coaxially
replacement of gear 48. . Thus the power takeoff
engagement between said intermediate shaft and
said engine shaft, a tubular shaft concentrically
mounted with said intermediate shaft, a clutch
means for connecting and disconnecting said
is formed with splines to permit removal and 70 between said shafts, means for effecting driving
shaft BI and casing 41 can be removed without
the necessity of opening and draining casing H
or disturbing the gearing contained therein. A 75
tubular shaft from said engine shaft, transmis
4
2,287,279
interposed between said engine shaft and said
sion mechanism actuated by said tubular shaft
tubular shaft, a clutch element ?xed on one end
for driving said transmission shaft, a power
of said engine shaft, an opposed clutch element
takeoff shaft arranged below said transmission
?xed on the opposed end of said tubular shaft, a
shaft, power takeoff mechanism operated by said
intermediate shaft and actuating .said power Cl double-faced clutch element ?xed on said shift
able shaft and movable into engagement with
takeoff shaft, and an overload release coupling
either’ of said clutch elements, transmission
interposed between said power takeoff shaft and
mechanism operated by said tubular shaft and
its actuating mechanism.
actuating said transmission shaft, a power take
4. In a tractor having an engine shaft and a
‘transmission .shaft disposed coaxially with each u, off shaft disposed below said transmission shaft,
a power takeoff mechanism operable by said
other; an intermediate shaft disposed coaxially
shiftable shaft and actuating said power takeoff
between said shafts, means for effecting driving
shaft, means operable to effect ' operating en
engagement between said intermediate shaft and
gagement between said shiftable shaft and said
said engine shaft, a tubular shaft concentrically
transmission shaft, whereby the latter can be
driven in a straight line direct from said engine
shaft,a power lift shaft, and driving mechanism
operable by said power takeoff mechanism‘ for
actuating said power lift shaft.
mounted with said intermediate shaft, a clutch
means for connecting and disconnecting said
tubular shaft from said engine shaft, transmis
sion mechanism actuated by said tubular shaft
for driving said transmission shaft, a power
takeoff shaft arranged below said transmission 20
8. In a tractor, an engine shaft, a transmission
shaft disposed coaxially therewith, a longitudi
nally shiftable shaft disposed between and coax
ially with said shafts, a tubular shaft mounted
concentrically with shiftable shaft and terminat
ing short of the ends thereof, a friction clutch
interposed between said engine shaft and said
shaft, power takeoff mechanism operated by said
intermediate shaft and actuating said power
takeoff shaft, an overload release coupling in
terposed between said power takeoff shaft and
its actuating mechanism, and a manually oper- ,
able means for operating said escapement clutch
to disengage said power takeoff shaft from its
tubular shaft, a clutch element ?xed on one end
coaxially between said shafts, means for effect
of said engine shaft, an opposed clutch element
?xed on the opposed end of said tubular shaft, a
double~faced clutch element ?xed on said shiftw
able shaft and movable into engagement with
either of said clutch elements, transmission
ing driving engagement between said movable
mechanism operated by said tubular shaft and
shaft and said transmission shaft, a tubular
shaft revolubly mounted on said movable shaft, ;
a clutch means for ‘connecting and disconnect
actuating said transmission shaft, a power take
off shaft disposed below said transmission shaft,
a power takeoff mechanism operable by said
shiftable shaft and actuating said power takeoff
shaft, means operable to affect operating engage
ment between said shiftable shaft and said
transmission shaft, whereby the latter can be
driven in a straight line direct from said engine
actuating mechanism.
‘
5. In a-tractor having an engine shaft and a
transmission shaft disposed coaxially‘with' each ;
other; a longitudinally movable shaft disposed
ing said tubular shaft from said engine shaft,
transmission mechanism actuated by said tubu
lar shaft for driving said transmission shaft, a
power takeoff shaft arranged below said trans
mission shaft, power takeoff mechanism operated
by said movable shaft and actuating said power
takeoff shaft, a clutch for disconnecting said
power takeoff shaft from said ‘power takeoff
mechanism, a power lift shaft, and means oper
ated by,v said power takeoff mechanism for actu
ating said power lift shaft.
shaft, a tubular shaft revolubly mounted on said
transmission shaft, operating connections be
tween said power takeoff mechanism and tubular
45 shaft, and a power lift shaft driven by said tubu
lar shaft.
9. In a tractor having coaxially aligned an
6. In a tractor, an engine shaft, a transmis
‘ engine shaft and a transmission shaft; a longi
tudinally shiftable shaft disposed between and
sion shaft disposed coaxially therewith, a longi
, tudinally shiftable shaft disposed between and
50
coaxially with said shafts, a tubular shaft mount
ed concentrically with shiftable shaft and termi
nating short of the ends thereof, a friction clutch
interposed between said engine shaft and said
tubular shaft, a clutch element ?xed on one end
of said engine shaftIJan opposed clutch element
?xed on the opposed end of said tubular shaft,
‘coaxially with said shafts, a tubular shaft
revolubly mounted on said shiftable shaft and
terminating short of the ends thereof, a fric
tion clutch ?xed on one end of said tubular
shaft for cooperation with said engine shaft,
a transmission gearing operable by the other
end of said tubular shaft and actuating
said transmission shaft, a power takeoff shaft
a double-faced clutch element ?xed on said shift
disposed ‘below said' transmission shaft, power
able shaft and movable into engagement with
either of said clutch elements, transmission
mechanism operated by said tubular shaft and
actuating said transmission shaft, a power take
off shaft disposed below said transmission shaft,
a power takeoff mechanism operable by said shift
able shaft and actuating said power takeoff shaft,
and means operable to effect operating engage
takeoff mechanism operable by said shiftable
shaft for actuating said power takeoff shaft, and
till
ment between said shiftable shaft and said trans- .
mission shaft, whereby the latter can be driven
in a straight line direct from said engine shaft.
7. In a tractor, an engine shaft, a transmis- v sion shaft disposed coaxially therewith, a longi
means on said shiftable shaft for operatively con
necting the latter either with said tubular shaft
for simultaneous operation of said power takeoff
, shaft and said transmission shaft, or with said
- engine shaft for continuous operation of said
power takeo? shaft independently of said trans
mission shaft.
10. In a tractor having coaxially aligned an
engine shaft and a transmission shaft; a longi
tudinally shiftable shaft disposed between and
coaxially with said shafts, a tubular shaft revolu
bly mounted on said shiftable shaft and termi
nating short of the ends thereof, a friction clutch
tudinally shiftable shaft disposed between and co
axially with said shafts, a tubular shaft mounted
?xed on one end of said tubular shaft for co
concentrically with shiftable shaft and terminat
ing short of the ends thereof,- a friction clutch 75 operation with said engine shaft, a transmission
2,287,279
5..
gearing operable by the other end of said tubular
shaft and actuating said transmission shaft, a
power takeoff shaft disposed below said trans
mission shaft, power takeoff mechanism operable
by said shiftable shaft for actuating said power
' gagement with the adjacent end of said shiftable
shaft when the latter is in engagement with'said
takeoff shaft, means on said shiftable shaft for
sion shaft disposed coaxially therewith, a longi
tudinally shiftable shaft disposed between and
coaxially with said shafts, a tubular shaft jour
naled concentrically with said shiftable shaft,
transmission gearing connecting said tubular
operatively connecting the latter either with said
, tubular shaft for simultaneous operation of said
power shaft and said transmission shaft or with
said engine shaft for continuous operation of said
power shaft independently of said transmission
tubular shaft, whereby said transmission vis
driven directly from said engine shaft.
'
14. In a tractor, an engine shaft, a transmis
shaft with said transmission shaft, a friction
shaft, and a coupling for operatively interengag
clutch for operating said tubular shaft by said
ing said shiftable shaft and said transmission
engine shaft, a power takeoff shaft, gearing con
shaft to provide direct drive from said \engine
necting said shiftable shaft with said power take
shaft.
15 off shaft, a clutch for connecting said shiftable
11. In a tractor having coaxially aligned an
shaft with said tubular shaft or said engine
engine shaft and a transmission shaft, a longitu
dinally shiftable shaft disposed between and co
axially with said shafts, a tubular shaft revolubly
shaft, whereby said power takeoff shaft can be
operated either simultaneously with said trans
mission gearing or independently thereof by said
mounted on said shiftable shaft and terminating 20 engine shaft, a coupling in a non-rotative slid
short of the ends thereof, a friction clutch ?xed
ing engagement with one end of said transmis
on one end of said tubular shaft for cooperation
sion shaft and movable into non-rotative engage
with said engine shaft, a transmission gearing
ment with the adjacent end of said shiftable
operable by the other end of said tubular shaft
shaft when the latter is in engagement with said
and actuating said transmission shaft, a power 25 tubular shaft, whereby said transmission is driven
takeoff shaft disposed below said transmission
shaft, power takeoff mechanism operable by said
shiftable'shaft for actuating said power takeoff
directly from said engine shaft, and a manually
controlled lever for shifting said coupling.
15. In a tractor, an engine shaft, a transmis
shaft, means on said shiftable shaft for opera
sion shaft disposed coaxially therewith, a longi
tively connecting the latter either with said tubu 30 tudinally shiftable shaft disposed between and
lar shaft for simultaneous operation of said power
coaxially with said shafts, a tubular shaft jour
takeoff shaft and said transmission shaft or with
naled concentrically with said shiftable shaft,
said engine shaft for continuous operation of said
transmission gearing connecting said tubular
power takeoff shaft-independently of said trans
shaft with said transmission shaft, a friction
mission shaft, a coupling for operatively interen- i clutch for operating said tubular shaft by said
gaging said shiftable shaft and said transmission
engine shaft, a power takeoff shaft, gearing
shaft to provide direct drive from said engine
connecting said shiftable shaft with said
shaft, and means for, permitting movement of
power takeoff shaft, a clutch for connecting
said shiftable shaft with said tubular shaft
or said engine shaft, whereby said power take
off shaft can be operated either simultane
ously with said transmission gearing or inde
pendently thereof by said engine shaft, a cou
said coupling into operative position only when
said shiftable shaft is disengaged from said en
gine shaft.
,
. 12. In a tractor, an engine shaft, a transmis
sion shaft disposed coaxially therewith, a longi
tudinally shiftable shaft disposed between and
coaxially with said shafts, a tubular shaft jour
naled concentrically with said shiftable shaft,
- pling in a non-rotative sliding engagement with
one end of said transmission shaft and movable
into non-rotative engagement with the adjacent
transmission gearing connecting saidl tubular
end of said shiftable shaft when the latter is in
shaft with said transmission shaft, a friction
engagement with said tubular shaft, whereby
clutch for operating said tubular shaft by said ‘ said transmission is driven directly from said
engine shaft, a power takeoif shaft. gearing con 50 engine shaft, and safety means for permitting
necting said shiftable shaft with said power take
shifting of said coupling into engagement with
off shaft, and a clutch for connecting said shift
said shiftable shaft only when the latter is in
able shaft with said tubular shaft or said engine '
engagement with said tubular shaft.
shaft, whereby said power takeoff can be oper
16. In a tractor having an engine shaft and
ated either simultaneously with said transmis- ' a transmission shaft disposed coaxially with each
sion gearing or independently thereof by said
other; a longitudinally shiftable shaft disposed
engine shaft.
between, said shafts coaxially therewith, a tubu
lar shaft concentrically mounted with said shift
13. In a tractor, an engine shaft, a transmis
sion shaft disposed coaxially therewith, a longi
able shaft, means for driving said tubular shaft
tudinally shiftable shaft disposed between and 60 from said engine shaft, a transmission counter
coaxially with said shafts, a tubular shaft jour
shaft journaled to one side of the vertical plane
naled concentrically with said shiftable shaft.
of said coaxially aligned shafts and in driving en
transmission gearing connecting said tubular
gagement with said tubular shaft, transmission
shaft with said transmission shaft, a friction
gearing operatively connecting said transmission
clutch for operating said tubular shaft by said 65 counter shaft with said transmission shaft, a
engine shaft, a power takeoff shaft, gearing con- '
necting said shiftable shaft with said power take
off shaft, a clutch for connecting said shiftable
shaft with said tubular shaft or said engine
_ shaft, whereby said power takeoff shaft can be
operated either simultaneously with said trans
mission gearing or independently thereof by said
engine shaft, and a coupling in a non-rotative
sliding engagement with one end of said trans
mission shaft and movable into non-rotative en
power takeoff shaft disposed below said aligned
shafts, a power takeoff counter shaft in driving
engagement with said shiftable shaft, and gear
ing connecting said last mentioned shaft with
said power takeoff shaft, a friction clutch for
connecting said engine shaft with said tubular
shaft, and a clutch for connecting said shiftable
shaft either with said engine shaft or said tubu
lar shaft.
75
17. In a tractor, an engine shaft, a transmis
6 ,
2,287,279
sion casing, a transmission shaft journaled in said
casing coaxially with said engine shaft, a longi-'
tudinally shiftable shaft journaled in said casing
coaxially with and between said ?rst mentioned
shafts, a tubular, shaft journaled in said casing
concentrically with said shiftable shaft, a friction
.clutchv connecting one end of saidtubular shaft
with said engine, shaft, a transmission counter _
shaft journaled in said casing below'and to one
‘
ing rearwardly therefrom, gearing mounted’ in .
said detachable casing and establishing driving
connection between the projecting end of said
power takeoff counter shaft and said power take-~
off shaft, a clutch elementon said tubular shaft,
a. clutch element on said engine shaft,‘ and- a
double-faced clutch element fixed on said shift
able shaft between said other clutch elements and
movable with said shiftable shaft into engage
side of said transmission shaft, gearing connect 10 ment with either' one of said other clutch ele‘e 5‘ '
ments, whereby said powertakeoff shaft can'rbe "
ing said counter shaft with the other end of said
operated either through‘ said tubular shaftv .or‘v
tubular shaft, selective transmissicn gearing con
directly by said engine shaft.
'
Y-Y -.
necting said counter shaft with said transmission
19. In a tractor having an engine shaft and a
shaft, a power takeoff counter shaft journaled in
said casing below said transmission shaft and 15 power delivery shaft disposed coaxially with each I '
other; a pair of concentric shafts disposed be
having one end projecting outwardly from said
tween and coaxially with said firstmentioned
casing, gearing connecting the other end of said
shafts, a fly wheel ?xed to said engine shaft, ‘a
power takeoff counter shaft with said'shiftable
shaft, a detachable casing secured to said trans
friction clutch ?xed on- one end of the outer one
mission casing and enclosing said projecting shaft 20 of said concentric shafts and engaging said ?y
wheel, a transmission counter shaft disposedibe
end, a power takeoff shaft having one end jour
low said concentric shafts, gearing for opera
naled in said ‘detachable housing and projecting
tively connecting said outer shaft with said coun
rearwardly therefrom, gearing mountedin said‘
ter shaft, transmission gearing connecting said
detachable casing andestablishing driving con
nection between the projecting end of said power 25 counter shaft with said power delivery shaft, a
takeoff counter shaft and. said power takeoff
power takeoff shaft disposed parallel with and be
shaft, and means for connecting said shiftable
shaft with said tubular shaft.
low said concentric shafts, and means transmit- "
ting the rotative power from the inner'one of,
said concentric shafts to said power take-off shaft
18. In a tractor, an engine shaft, a vtransmis
sion casing, a transmission shaft Journaled in 30 and spanning said transmission counter shaft and
gearing.
'
said casing coaxially with said engine shaft, a
20. In a tractor having an ‘engine shaft and a ‘
longitudinally shiftable ‘shaft journaled in said
power delivery shaft disposed coaxially with each
casing coaxially with and between said ?rst men
other, a pair of concentric shafts disposed between
tioned shafts, a tubular shaft jlournaled in said
casing concentrically with said shiftable shaft, a v35 and coaxially with said ?rst mentioned shafts, a
friction clutch connecting one end of said tubular
?y wheel '?xedto said engine shaft, a friction
shaft with said engine shaft, a transmission coun
clutch ?xed on one end of the outer one of said
ter shaft journaled in said casing below and to
concentric shafts and engaging said ?y wheel, a tractor driving gear on the other end of said
necting said counter shaft with the other end of 40 last-named shaft, means to rotate said inner one‘
of. said concentric ‘shafts, a power takeoff shaft,
said tubular shaft, selective transmission gearing
disposed parallel with said concentric shafts,
connecting said counter shaft with said trans
power takeoff gearing transmitting the rotative
missionshaft, a ‘power takeoff counter shaft jour
power ‘from the inner one of said concentric shafts
naled in said casing below said transmission shaft
and having one end projecting outwardly from 45 to said power takeoff shaft, and driving means T
actuated by the outer one of said concentric
said casing, gearing connecting the other end of
shafts and' operating said power delivery shaft, '
said power takeoff counter shaft with said shift
said driving means spanning said power takeoff, '
able shaft, a detachable casing secured to said»
one side of said transmission shaft, gearing con
transmission casing and enclosing said projecting
‘shaft end, a power takeoff shaft having one end 50
journaled in said detachable casing and project
gearing.
.
,
EMIL F. STUMPF. ;
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