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Патент USA US2105532

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Jan. 18, 1938.
Filed Dec. 25, 1936
2 Sheets-Sheet l
Jan. 18, 1938.
Filed Dec. 23, 1936
2 Sheets-Sheet 2
Patented Jan. 18, 1938
PATENT orrica
Joseph 0. Halousek, Malia, ores.
Application December 23, 1936, Serial No. 117,388
3 Claims. (Cl. 55-51)
This invention relates to diggers and is par
ticularly adapted for the converting of a potato
digger into a self propelled vehicle.
At the present time potato diggers are drawn
by outside sources of power, the conveyor re
to the opposite end of the axle 8. Extending for‘
ward the worm housing is a web I l terminating in
a flange if. The ?anges 8 and I! receive the
ends of the frames I. best shown in Figures 1
Gusset plates l3 are provided on the 5
ceivlng its power from the wheels of the diggen' frames i terminating in flanges Ill. The ?anges
In my present invention the primary object is ll of the frames I butt against the ?anges B
to provide a potato digger with a power plant and I! of the rear axle assembly and the butting
for propelling the digger itself along the ground, ?anges are held together by suitable fastening
means as bolts 65.
13 at the same time providing power for driving the
conveyor chain.
The type of assembly just described makes a
Another object of my invention is to provide rigid connection between the frame of the ma
different speeds for operating the digger which chine and the rear axle assembly preventing the
is important in different classes of soil.
main frame i from twisting throughout its en
A further object of my invention is to pro
tire length. This is necessary due to the fact 15
vide a driving means for propelling the digger that the forward end 4 of the frame pivots on
that can be reversed so that turns can be more the front axle 5, this gives a three-point sus
easily made.
pension which is more or less important for the
A still further object of my invention is to proper operation of the entire machine.
‘ provide driving means forthe digger conveyor
that can be reversed so that the conveyor can
be readily cleaned in case it becomes clogged.
And a still further object of my invention is
to build a potato digger that will follow the rows
of potatoes, due to the arrangement of the steer
ing wheels being close together relative to the
width of the digger,
These and other incidental objects will be ap
parent in the drawings, speci?cation and claims
30 to follow.
Referring to the drawings:
Figure 1 is a side elevation of my new and im
proved self-propelled digger, parts removed and
broken away for convenience of illustration.
Figure 2 is a plan view of Figure 1, parts re
The front end of the frame 4 has a downward- 2o
ly extending yoke it which is pivotally mount
ed to the bearing block I‘! which forms part of
the axle 5. A suitable spindle bolt I8 is pro
vided. The wheels iii are mounted to the axle
5 identical with the well known practice used in 25
automobiles and the‘like. ‘The front wheels are
controlled by the steering wheel 20, worm housing
2i and shaft 22, having theus-ual crank 23 for
connecting to the steering rod 24, in the usual
manner. Driving wheels 25 are mounted to the
rear axles 26. The axles 2B are driven from the
worm 21 and worm wheel 28A. Within the hub
of the worm wheel is the usual differential mech
anism. A power plant 28 is provided for driving
the vehicle over the surface of the ground and
moved and broken away for convenience of ii
for driving the conveyor chain within the digger.
This power plant is supported upon the cross
frames 54 and brackets 54A.
Figure 3 is a side elevation, parts removed and
broken away for convenience of illustration.
Figure 4 is a fragmentary view of the raising
and lowering mechanism employed to manipulate
the digger blade.
Figure 5 is the rear axle assembly, with frag
mentary parts of the frame about to be assembled
and 3.
In the drawings:
Referring to Figure 2, the motor is indicated
at 29, having the usual ?y wheel housing 30 and
clutch assembly 3!. The clutch is controlled from
the control lever 32. A drive pinion 33 drives the
beveled gear 34 within the housing 36. The
beveled gear 34 drives the usual transmission as
sembly 37 which 'has a changed speed lever 38, 45
the transmission is of the well known type. A
, The digger consists of a frame i, having a
propeller shaft 39, within the housing 80, drives
rear axle 2 bolted or ?xed solidly thereto. The
the worm 21 which in turn rotates the worm
forward end of the frame turns inwardly at 3
terminating in a forwardly extending frame 43
supported upon axle 5. The rear axle has a
housing 6, having on its one end a web ‘I extend
ing forwardly and terminating in ?anges 8.
Strengthening gussets 9 give rigidity to the ?ange
l. A worm reduction gear I0 is ?xedly mounted
wheel 28 and the axle 26 driving the wheels 25.
From the foregoing it will be seen that a clutch
is provided for so that gears may be changed
relative to the driving of the vehicle over the
ground at different speeds or gear reductions.
The usual digger conveyor is shown at ll and
is pivotally mounted to the frame I at 42. The 55
cross shaft 43 mounts the same to the frame.
The blade 44 and the conveyor are raised and
lowered by the usual g00se~neck 45, said goose
neck is ?xedly mounted to the conveyor frame
at 46. Its forward end 41 carries the lever 48,
the lever is pivotally mounted at 49 and has a
bell crank 50. A connecting link 5| is pivotally
mounted to the bell crank 50 at 52, and ter
minates in its opposite end within the bracket
10 53, which is ?xedly secured to the cross frame 54.
The lever 48 is held in any ?xed position by the
quadrant 55 and by the manipulation ofv lever 48
the digger blade will be raised and lowered in the
usual manner. The usual conveyor chain 56 is
driven by the sprockets 51 which are mounted on
the shaft 58. The chain 56 is trained about the
cones 59, 60 and sprockets 6|. This part is well
known practice. The shaft 58 is driven by the
beveled gears 62 and 63 within the housing 64,
20 said housing is ?xedly mounted at 65 to the icon
veyer frame 4|.
Referring to the power plant, a sprocket 66
keyed to the forward end of crank shaft 67 drives
the chain 68 which is trained about the sprocket
25 69, sprocket 69 drives the pinion 10 which in turn
drives the pinion ‘H, both pinions being mounted
within the housing‘ 12. Another standard trans- mission 13 receives its power from a clutch as
sembly 14, said clutch being controlled by the foot
30 pedal 15. The transmission is controlled by‘ the
lever 16. A propeller shaft 11 is slidably mount
ed within the sleeve TIA, said sleeve "A has a
universal joint '|‘|B connecting it to the trans
mission 13. The apposite end of the drive shaft
11 terminates in a universal joint 18, and next to
this universal joint is a clutch 19 that will release
in the event that the chain 56 becomes immovable.
The stub shaft 80 connects the clutch 19 with. the
pinion 63. This assembly as just described pro
40 vides a drive for the chain 56 that is variable in
speed so that any speed may be had depending
upon the working conditions to be met. Arches
8| are provided in the main frame so that the
digger blade will not become clogged.
The machine as described above can be driven
forward at any speed by its own power or it can '
be reversed making it possible to turn around
easily. The digger mechanism can be run at
any speed and also reversed which is important
in case the digger becomes clogged.
Having thus described my invention, more or
less speci?cally, I wish it to be understood that
I do not wish to be limited to the particular form
of construction shown and described as my in
vention may take other forms of embodiment, 10
still coming vwithin the scope of the claims to
What I claim is:
1. In a potato digger, a main frame, wheels
mounted on the main frame, a motor, gearing in
cluding a transmission between the wheels and
the motor, a conveyor frame pivoted within the
main frame, a digging blade extending from the
forward end of the conveyor frame, an endless
conveyor operating longitudinally of the conveyor
frame, manually operable means for moving the
conveyor frame on its pivotal support, and driv
ing means extending longitudinally of the main
frame and connected at one end to and operated
by the motor, with the opposite end of the driving
means ‘driving the conveyor, said last named driv
ing means including a transmission and universal‘
connections to provide for controlling the speed
of the conveyor independently of the speed of
the digger as a whole and for‘permitting pivotal
adjustment of the conveyor frame without inter
fering with the ,driving connection for the con
2. A construction as de?ned in claim 1, wherein
the main frame is upwardly arched in vertical
alignment with the blade to avoid choking the
conveyor at its entrant end.
3. A construction as de?ned in claim 1, where
in the driving means for the wheels and the driv
ing means for the conveyor are arranged on op 40
posite sides of the conveyor frame and in spaced
relation thereto, whereby to permit adjustment of
the conveyor frame and tend to balance the
weight on opposite sides of the conveyor frame.
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