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Патент USA US2408937

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Filed March 51, 1942
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i A. w. LELAND
Filed March 31, 1942
5 Sheets-Sheet :s
Patented Oct. 8,- 1946
Alfred W. Leland,‘ Rockford, Ill., assignor to J. 1.
Case Company, Racine, Wis., a corporation
Application March 31, 1942, Serial No. 437,009
4. Claims. (01. 9'7—101)
The invention of which the following is a de
tailed description, relates to a light draft plow
for use with tractors. Plows of this nature are
generally arranged in a gang supported from a
wheeled frame for adjustment and drawn by trac
tors. The tractive e?ort required in farming has
been found to be affectedmaterially by the draft
In carrying out my design it will incidentally
be noted that the plow operates without clogging
from accumulation of trash.
Other objects of my invention will be apparent
from the following description of the preferred
form illustrated by way of example in the accom
panying drawings, in which
Fig. 1 is a perspective view of the improved
light draft tractor plow;
of the individual plow unit. By this is meant the
resistance due to friction which each plow unit
Fig. 2 is a perspective ‘side view of the rear
develops in operation. ‘It has been a generally 10 plow and wheel;
accepted view that plows operating in this man
Fig. 3 is a perspective rear view of the said
_ ner follow the design of individual or single plows
developed and primarily adapted to be drawn
plow and wheel;
Fig. 4 is a side elevation of the same;
by horses. It thus follows that these individual
Fig. 5 is a fragmentary plan view of the same;
plows have landsides recognized as necessary in 15
Fig. 6 is a fragmentary perspective side view
keeping the plow in the proper direction in the
of the plow;
Fig. '7 is a fragmentary perspective side View of
I have discovered that a wheeled gang plow can
be so designed and arranged that the individual
Fig. 8 is a cross-section of the beam on the
plow units will cut straight furrows without hav
line 8-8 of Fig. 7;
ing to rely upon landsides. Accordingly I have
Fig. 9 is a cross-section of the blade on the line
designed an improved plow which is open on the
9—9 of Fig. 7 and
side toward the unplowed land and may be used
Fig. 10 is a side view of a modi?ed form of
in combination with a wheeled frame, capable of
beam and blade.
doing everything required of such implements 25 As illustrating the preferred form of my inven
and in addition being free from the customary
tion I have shown a gang plow adapted to be
hitched to a tractor or the like. The plow com
One object of my invention is to generally im
prises generally a frame ll across the front of
prove the construction and operation of imple
ments of this class.
30 which is a cross bar l2.
This cross bar has an
adjustable trailer hitch It by which the gang
One of the objects of my invention is to provide
plow is drawn behind a power tractor.
the beam of the plow with a downwardly and lat
The front of the gang plow is supported upon‘
erally extending ?attened blade. This blade is
an axle M which is bent at each end as indicated
all that is necessary in order adequately to sup
in Fig. 1 to support wheels l5, l5. Thebent axle
port the moldboard and the plowshare when no 35 I4 can be rocked by means of rock arms l6 and
landside is necessary.
associated parts so that the plows may be lifted
A further object of my invention is to design
clear of the ground or in operative position al
the beam of such cross-section as to provide the
lowed to penetrate the desired depth. The link
maximum strength and rigidity where needed
age IB is controlled from hand lever IT. This is
and at the same time provide for ?attening and 40 also a method of adjusting the depth of cut. ,
?aring the rear end of the beam into an adequate
Each individual plow unit includes a beam l8
support for both the moldboard and the plow
of which three are shown. These beams are
held at their forward end by the frame I! and
Incidental to the above purpose it is also appar
their rear portions are clamped by the cross-brace
ent that the beam and its blade may be either
I9. Beam braces 20, 20 serve as spacers between
a single integral element or alternatively the ?ar
adjacent beamsj In this manner the beams are
ing blade may be attached to the beam by any
held in parallelism with their rear ends forming
appropriate coupling element.
a diagonal line with respect to the line of draft.
A still further object of my invention is to
Each beam carries a depending shaft 2| with
provide the plow unit, or the end unit in a gang,
bottom yoke'22 in which is journalled a coulter’23.
with a rear or furrow wheel so spaced as to re
The rearmost beam carries a plate 24 by means
lieve the plow unit from pressure against the side
of which a rear tail or furrow wheel 25 is carried.
of the furrow.
The furrow wheel 25 is mounted on an axle or
It is also an object of my invention to design
spindle .26 which is carried in a bearing‘i'l. The
the plow in such manner as to reduce friction 55 upper end of the axleziiis laterallyiadjustable at
against the side of the furrow, replacing the usual
28 in accordance with the disclosure of the patent
sliding contact with a rolling contact.
to Rutter No. 2,044,718, June 16, '1936, for the
purpose which will be outlined. The bearing 21
A decided factor in obtaining improved results
is of course the lateral adjustment of the rear
wheel 25 as described in the above identi?ed pat
ent to Rutter No. 2,044,718, June 16, 1936, which
is subject to rocking adjustment on its mounting
29 in plate 24, to the extent permitted by the ad
justable stop 30. Link 3| extending from the arm
32 and the axle 26 connects with the bell crank
provides clearance between the cutting edge of the
lever 33. The lever 33 is pivotally connected to
While I have shown one form of my invention,
it is to be understood that suitable changes in
the form and arrangement of the several parts
plow and the side of the furrow.
a reach rod 34 the front end of which is coupled
to the rock shaft M. In this manner when the
shaft I4 is rocked to lower the plow units, the 10 may be made within the scope of the invention as
rear or furrow wheel 25 is lifted to the extent
de?ned in the following claims.
permitted by the stop 30 to adjust the position of
What I claim is:
the plow.
1. A plow comprising a wheeled frame, a beam
I have shown the beams I8 to be formed of
on the frame having a twisted con?guration and
rolled channel, steel or I-beam shapes. ‘ This pro
vides the requisite strength and rigidity for draw
15 including a ?aring blade extending downwardly
and laterally, a plate carried by the blade, a mold
ing the plows. At their rear ends the I-beam
shapes are ?attened into a flat blade 35. This
board and a plowshare both mounted on the
plate, said plow being open on the side opposite
the plowshare, a furrow wheel, a wheel spindle,
a bearing carried on the beam for journalling said
spindle behind said plate, means to adjust the
spindle laterally of the moldboard and means for
blade is twisted downwardly and to the right to
form a ?aring support.
It is within the contemplation of my invention
however, that the depending ?aring flat support—
ing blade 35 may be used separately from the
beam l8. As illustrated in Fig. 10 such a blade 35
rocking the spindle vertically.
2. A wheeled plow having a frame, a series of
may be held in a socket member 38 mounted upon
a tubular or other suitable beam 37. In this way
the same result may be obtained of providing for
channeled I-beams spaced by the frame, a cross
brace spaced rearwardly from the frame for hold
ing said beams parallel, beam braces between
suitable carriage of the plow parts.
adjacent beams, each beam having a twisted con
In either modi?cation the signi?cant feature is
?guration and an integral ?aring blade extend
that the use of the'blade 35 is suil'icient to carry 30 ing downwardly and laterally, plates on the
the necessary plow parts and to eliminate the
blades, a moldboard and a plowshare both car
necessity of the so-called frog.
ried on each plate forming a plow unit and a
The blade 35 forms a support for a wide foun
dation plate 33. This in turn carries a suitable
wheel behind and offset from the end beam of
the series.
moldboard 39 above a plowshare Ml} These parts 35
3. In a wheel plow, the combinationof land
are rigidly held together in the form shown in
and furrow wheels and a frame carried by said
Figs. 5 and 6. The angle at which the blade 35
wheels and including a plurality of plow beams,
and plate 38 support the plowshare and mold
each beam extending rearwardly for a predeter
board is clearly illustrated in Fig. 5. Here it will
mined distance substantially over and parallel
be found that the common vertical cutting edge
to a furrow wall being formed by the plow, said
of the plowshare and moldboard is at a slight
beams each having a portion curving downwardly
angle to the line of the furrow as indicated in
and then away from the'land, and said beams
Fig. 5. The position and inclination of the fur
having a twisted con?guration in the parts which
row wheel 25 is also indicated. It may be said
depart from the above mentioned direction par
that the point of support of the rear wheel 25 is 45
allel to the furrow wall, said twisted con?gura
in line with the vertical edge of the moldboard.
tion providing a flared attaching surface dis
From this relation it is apparent that the only
posed at an angle to the direction of said fur
part of the plow which comes in contact with the ‘
rows, a foundation plate attached to said attach
vertical side or landside of the furrow is the cut
ting edge, the plow bottom being open along this
case with a landside.
This arrangement of a light draft tractor plow
provides the appropriate means for lowering the
individual plow units into working position and
supporting them rigidly by beams which are pe
culiarly designed for the sole purpose of advanc
ing the plowshares and moldboards in cutting the
furrow and turning over the soil. By providing
ing surface, a share and moldboard carried by
50 said plate, and a, tail wheel carried by one of said
side as is apparent. The lateral pressure is taken
by the rear wheel alone. Consequently there will
be no friction on the side of the plow and no need
for a landside. Also the rolling contact of the
rear wheel offers less resistance than would be the 55
beams and disposed in position to support said
frame against landward pressure by running
against the wall of a furrow being formed by
said plow.
4. In a wheel plow, the combination of land
and furrow wheels and a beam extending rear
wardly for a predetermined distance substan
tially over and parallel to a furrow wall being
formed by the plow, said beam having a portion
extending downwardly and then away from the
land, and said beam having a twisted con?gura
tion in the part which departs from the above
mentioned direction parallel to the furrow wall,
the rear wheel 25 at an angle to or slightly offset
said twisted con?guration providing ?ared at
from the cutting edge of the plow, the contact of 65 taching surface disposed at an angle to the direc
the latter with the landside of the furrow is
tion of said furrow, a foundation plate attached
avoided. It will be evident that there will be no
to said attaching surface, a share and mold
need to provide a landside or design a frog or
board carried by said plate, and a tail wheel
beam for withstanding the added friction and
carried by said beam and disposed in position to
draft resulting from a landside. It is thus pos 70 support said frame against landward pressure by
sible to simplify the design both as regards the
running against the wall of a furrow being
beam and the support for the plowshare and
formed by said plow.
moldboard and to obtain marked improvement
‘inthe actual operation of the plow.
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