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Патент USA US2408509

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. Oct. 1, 1946.
C_ c; BROWN
_
_ 2,408,507
STEERING ‘DRIVE MECHANISM FOR DRIVEN WHEELS
4
Filed pct. 20, 1944,v
2 Sheets-Sheet- 1
Inventor
Cur/0m C 49/80 w/v,
Ogt. 1, 1946.
c. c. BROWN
2,408,507 '
VS'I‘EERINGV DRIVE ‘MECHANISM FOR DRIVEN WHEELS
Filed Oct. '20, 1944
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CL arm/e0 ‘C. 520 mm, -
Patented Oct. 1, 1946 ‘
r 2,408,507
UNITED STATES PATENT OFFICE
2,408,507
STEERING DRIVE MECHANISM FOR
DRIVEN WHEELS
Clifford 0. Brown, Clinton, onio
Application October 20, 1944, Serial No. 559,542
2 Claims.
1
The present invention relates to new and use
ful improvements in front wheel drives for trac
tors and other power driven vehicles and has for
(01. 180-17)
2
gear I2 in engagement respectively with the
planetary gears I1 and I8.
The opposed faces of the gears 2! and 22 are
also formed with lbeveled gear teeth 23 and 24
engageable by a beveled gear 25 positioned be
longitudinal alignment.
tween .the gears 2| and 22 and operated by means
A further important object of the invention
of a steering shaft 26 through the gears 21.
is to provide a steering front wheel drive with
In the operation of the device the axles 5 and
out interrupting the power transmitted to each
‘I and the wheels 8 and 9 are driven through the
of the front drive wheels and in which the steer-J 10 carriers ID, the spur gears l5 and I 6 and the
ing mechanism is operatively connected to the . planetary gears I1 and I8 by means of the shaft ’
drive means of the wheel to selectively effect a
I I, ring gear I2, pinion I3 and transmission shaft
lag in one of the wheels whereby to decrease the
I Afrom the power plant of the vehicle.
driving speed of one of the wheels and to increase
The steering of the front wheels 8 and 9 is
the driving speed of the other wheel to cause the‘ 15 accomplished by subjecting one of said wheels
its primary object to provide a steering mecha
nism for the vehicle while the wheels remain in
desired turning movement of the vehicle.
to a lag accomplished through the operation of
the steering shaft 26 and beveled gear 25 which
rotates the gears 2| and 22 and which through
the planetary gears l1 and I 8 will decrease the
performance, relatively inexpensive to manufac 20 speed of one of the wheels and increase the
ture and otherwise well adapted for the purposes
speed of the others of said wheels to thus accom
for which the same is intended.
'
plish the steering of the vehicle.
Other objects and advantages, reside in the de
It is believed that the details of construction
tails of construction and operation as more fully
and manner of use of the device will be readily
hereinafter described and claimed, reference be 25 understood from the foregoing without further
A .still further object is to provide an appa
ratus of this character of simple and practical
construction, which is ef?cient and reliable in
ing had to the accompanying drawings forming
detailed explanation.
,
part hereof, wherein like numerals refer to like
Having thus described the invention, what I
parts throughout, and in which:
claim is:
Figure 1 is a transverse sectional view through
1. A steering drive mechanism for a pair of
the gear housing for the front wheel drive.
30 driven wheels and comprising axles for the
Figure 2 is a view of the drive gears with one
wheels, a gear housing rotatably supporting the
side of the housing removed.
inner ends of the axles, a head on the inner end
Figure 3 is a transverse sectional View taken
of each axle, a shaft journaled in respective
substantially on the line 3—-3 of Figure 4, and
heads in alignment with the axles, a driven gear
Figure 4 is a sectional view taken substantially 35 secured to the shaft, planetary gears carried by
on a line é—li of Figure 3..
.
the heads, gears secured to the shaft engaging
Referring now to the drawings in detail where
said planetary gears, ring gears journaled on
in for the purpose of illustration I have dis
the shaft in engagement with the planetary gears,
closed a preferred embodiment of the invention,
and means controlling the movement of said ring
the numeral 5 designates a gear housing having 40
gears to effect an increase in the speed of one
the axles 6 and 'I journaled in the opposite sides
of the axles and a corresponding decrease in the
thereof and to which the front wheels 8' and 9
‘ speed of the other axle to produce a lag in the
are respectively connected.
wheel attached to said last-named axle.
Formed on the inner end of each axle is a
2. A steering drive mechanism for a pair of
carrier. or cross head, I I3, the two cross heads 45 driven wheels and comprising axles for the
having the ends of a shaft I! journaled in the
wheels, a gear housing 'rotatably supporting the
opposed faces thereof.
Keyed to the central portion of the shaft I I
is a ring gear I2 driven by a pinion I3 on a
shaft I 4 leading from the transmission mecha
nism of the vehicle, the shaft I4 being jour
naled in the housing 5 as shown in Figure 2 of
the drawings.
'
Also keyed to the shaft II adjacent the ends
inner ends of the axles, a head on the inner end
of each axle, a shaft journaled in respective heads
in alignment with the axles, a driven gear se
cured to the shaft, planetary gears carried by
the heads, gears secured to the shaft engaging.
said planetary gears, ring gears journaled on the
shaft in engagement with the planetary gears,
and a manually operable gear engaging both of
thereof are spur gears I 5 and I6, each of the 55 .said ring gears and adapted to effect an increase
spur gears being operatively engaged with a pair
in the speed of rotation of one of the axles and
of planetary gears I‘! and I8 freely journaled on
a corresponding decrease in the speed of the other
pins I 9 and 26 carried at the opposite ends of
axle to produce a/ lag in the wheel attached to
the carriers Ill for the respective axles.
said last-named axle.
Internal ring gears 2| and 22 are freely mount 60
CLIFFORD 0. BROWN.
ed on the shaft II at opposite sides of the ring
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