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Патент USA US2407064

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Sept. 3, 1946.
F. L. DE’wl-:Y
2,407,064
AGRICULTURAL IMPLEMENT
Filed May 22) 1944
s sheets-sheet 1
`
sept. 3, 1946'.
F. L. DEWEY
AGRICULTURAL IMPLEMENT
Filed May 22, l1944
2,407,064 ,
,
3 Sheets-Sheet 2
M_
ví
'
Sept. 3, 1946.
»
`
F, 1_, DEWEY-
`
’
2,407,064
AGRICULTURAL IMPLEMENT
Filed May '22,' 1944
3 Sheets-Sheet'b’
¿ige/67261072:
Patented Sept. 3, 1946
2,407,054 -
UNITED STATES PATENT oFFlcE
2.4.07;064
AGRICULTURAL IMPLEMENT
Frederick L. Dewey, Canton, Ill., assignor to In
ternational Harvester Company,
a corporation "
of New Jersey
Application May 22, 1944, Serial No. 536,705
19 Claims. (Cl. 97-29)
1
2
This invention~ relates to agricultural imple
ments and particularly to implements adapted to
Ee mounted upon a tractor to be supported there
An object of the invention is the provision of
an improved plow.
,
The forward ends of plow units Il and i3 are
connected to a hitch structure generally indi
cated at 25.` This structure includes a trans
Another object of the invention is the provision
of an improved two-way plow.
.
Another object is the provision of a tractor
mounted two-way plow which is adapted to be
.
-` unit` I8 being left-hand plow bottoms, the two
plow units Il and I8 ,thus being designed for al
ternate operation. This arrangement permits
the plow to traverse a ñeld in opposite directions
and to open adjacent furrows.
versely extending sleeve member 26, the opposite
10.
supported entirely by the tractor but which is ‘ '
stabilized from the ground.
A further object is to provide a novel tractor
ends of which are hollow and receive therein the
transversely extending portion of crank axles
21, each said crank axle having an inturned stub
portionupon which is mounted a gauge wheel
mounted two-way plow which has free iloating
28. Each end of the sleeve member 25 is pro
movement when in operating position, and which 15 vided with a standard 29 weldingly securedthere
is stabilized by gauge Wheels which are lifted ‘ to and bent at its upper end to provide an aper
above the ground when both of the plow units are
tured ear 30 to receive therein for axial rotation
in transport position, but which remain on the
the shaft .portion of a crank 3|. Crank 3| is
ground when either of the plow units is in oper
ating position.
`
Other objects and advantages oi the invention
will appear from the following detailed descrip
tion when read in conjunction with. the accom-4
panying drawings, wherein:
~
Figure l is a view in side elevation of the rear
end of a tractor, showing the plow of the pres
ent invention mounted thereupon;
Figure 2 is a plan view of the structure shown
in Figure l; and
Figure 3 is a rear elevation of the plow of the
present invention with certain parts removed for
clarity, and showing both plow units in transport
position.
threaded at its lower end for insertion in a cor
20 respondingly threaded sleeveA 32, the lower end
of which is provided with a hoo-k 33 for engage
ment with a lug 34 on the crank axle 2l at a point
near the axis of the gauge wheel 28. Provision
is made against lateral sliding movement of the
25 wheel 28 by a clip 35 fastened to standard 29 and
spaced 'therefrom by a collar 36, keyed to the
transverse portion of crank arm 21. Thus, by
turning the crank 3|, it should be clear that the
gauge wheel 28 may be swung vertically about the
30 sleeve member 26 as an axis to vary the vertical
position of the wheel for changing depth of plow
ing or for leveling the plow.
Connection of the plow units Il and I8 to the
l
In the drawings, it will be noted that the plow
of the present invention is attached to a tractor
generally indicated at I0 and having a longitudi
nally extending body portion II. The rear end
of the tractor is supported by laterally spaced
`sleeve member 26 is made by means of a struc
comprising laterally spaced pairs of radially
35 ture
projecting, circumierentially displaced lugs 3l
and 33. These lugs are apertured to receive a
pin 39 upon which is pivotally mounted a U
shaped member 49 having a transverse portion
drive wheels I2 and |3mounted upon a trans
verse axle Ill journaled in a rear axle housing
4|, which, due to the circumferential displace
I5, which is provided at laterally spaced points 40' ment of lugs 31 and 38, occupies a position at a
with implement attaching structures I6.
slight angle to the horizontal. Members £0 are
The plow of the present invention includes a
pair oi laterally spaced, longitudinally extend
ing plow units I1 and I8, each being of substan
tially the same structure and comprising a pair
of beams I9 and 20 separated and braced at their
forward ends by a spreader member 2 I, which is a
4,5
attached to the members 2|, at the forward end
of plow units |`| and IB, by bolts 112, the plow
units thus having vertical pivotal movement
about the pins 39. The inclination of the pivot
axis of members lill is such as to cause plow units
I1 'and I8 to be diverted outwardly when raised.
It may also be noted that the angular relation
Portions IS and 2i! are likewise connected and
ship of member 2| with `respect to member 4o
braced rearwardlyby a member 23. The rear 50‘ maybe varied by suitable mechanism, not shown,
ends of beams I9 and 2|! curve downwardly and
to level the plow units.
v
are provided at their lower ends with plow bot
Likewise projecting from sleeve member 2t are
toms 2li, the plow bottoms onthe right-hand unit
forwardly projecting lugs 43 to which are pivot
Il being right-hand plow bottoms and those on 55 ally attached the laterally spaced arms of a for
U-shaped member having a, transverse portion 22.
2,407,064
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4
wardly extending U-shaped hitch arch M having
nected to extensions 8i) on arms 15 and the for
ward ends of these rods being connected re
spectively to power lift arms BI and 82. Power
lift arms 8| and 82 are independently mounted
on the tractor for rocking movement, and power
for effecting rocking movement thereof is sup
a transverse portion 45. Openings ¿56 in trans
verse portion 45 provide for the attachment at
laterally selected points of spaced clevises ‘l1 for
lateral pivotal movement. Clevises 41 comprise
vertically spaced elements 48 and 49, the rear
ends of which are pivoted upon pins V58 each
inserted in one of the openings 4G. The elements
48 and ¿$9 straddle a transverse draft bar 5I,
and their forward ends are spaced by a roller 10
52 having a grooved surface adapted to ñt the
plied by a power-lift mechanism not shown, of
suitable form, deriving power from the tractor.
Movement of these arms independently is ini
tiated by levers 83 and 8i'. mounted on a quad
rant 85 on the stearing post 85 of the tractor,
the levers being accessible to a tractor operator
from his seat 81.
In Figures 1 and 2, the plow of the present in
contour of the draft bar 5I. Likewise connected
to the upper portion of the clevises 41 is a trans
verse strap 53 having a number of apertures
therein for a purpose hereinafter set forth.
15 vention is shown with the right-hand plow unit
I1 raised to transport position, while plow unit I8
Draft bar 5| is provided at its ends with up
is in plowing position. Figure 3 shows the plow
wardly extending arms 54 and downwardly ex
with both units raised to transport position. It
tending arms 55. To the upper end of each arm
will be noted that in Figure 3, the gauge wheels
54 is pivotally connected a rearwardly extending
hitch strap 55, the rear end of which is attached 20 28 are shown lifted from the ground with the
working tools, while in Figures 1 and 2, wherein
by a bolt 5? to an angle member 58 having open
one of the plow units is operating, both of the
ended slots in the upper and lower edges thereof
wheels 28 are in contact with the ground. This
for the reception of bolts 59, pivotally mounted
is made possible through a mechanism compris
upon the tractor attaching structure I6, as clearly
viewed in Figures 1 and 3. Hitch structure 55 is 25 ing chain 88 having one end attached to one of
the arms 15 on the left side of the tractor and
protected against vertical stress by an upstanding
the other end attached to the arm 15 on the right
strap Sil secured to the hitch strap 55, and hav
side of the tractor. Chain 88 is thus continuous
ing at its upper end an open-ended slot for the
between the arms 15 and extends downwardly
reception of a bolt 6l , projecting from the side of
the tractor, the hitch straps 56 on both sides of 30 and is passed around laterally spaced idler roll
ers 89, each of which is mounted for rotation in
the tractor being similarly attached.
a pulley block 9U attached to the inner surface of
Near its rear end each strap 55 is provided with
the beam 20 adjacent its forward end. rí‘he upper
a downwardly and inwardly bent extension 82,
ends of the chain 88 are flexibly connected to the
the extensions 62 on opposite sides of the center
arms 15 by the interposition of springs 8l. Thus
line of the tractor being connected by a support
in Figure 3, with both of the plow units in raised
ing member 63 having laterally spaced, upwardly
position, the arms 15 extend almost vertically up
extending ears 54 for a purpose hereinafter set
wardly, the chain 88 is taut, and the front ends
forth. Flexibility is imparted to the plow hitch
of the plow units, and therefore transverse mem
by means of a spring member 65 comprising a
guide rod 65, the forward end of which is con- "40' ber 26 carrying the gauge wheels 28, are likewise
lifted off the ground. On the other hand, when
nected to the depending end of arm 55 and the
one of the plow units is in operating position, as
rear end of which is inserted for sliding move
is always the case when the plow is operating,
ment in a swivel member 61 extending between
the position of one of the arms 15 is consider
the extension G2 of strap 55 and ear 54 of sup
porting member 53. Guide rod 56 is surrounded ' ably lower, as may be seen in Figure l, and no
lifting effect is applied to the forward ends of
by a spring 88 abutting against the swivel 51 at
the plow beams, slack being introduced into the
one end and a collar S9 at the other.
It should now be understood that the hitch
chain 8S. Therefore, both of the wheels 28 serve
to gauge each plow unit as it is placed in opera
tion, and when both of the plow units are raised
above the ground for transport purposes the gauge
wheels 28 are likewise lifted. Free vertical float
ingV movement of the operating unit, it may be
structure 25, including the straps 55 and the
angle members 58, is part of the plow structure,
and that the plow is readily attached to the
tractor simply by fitting the slots in the angle
members 53 and straps 50 over the bolts 55 and
noted, is imparted thereto by the introduction
5I, respectively. Thus the plow is likewise read
ily removed from the tractor as a unit.
55 of slack in the chains 11 by which the plow units
are connected to the lifting arms
Adjust
ment of the gauge wheels 2S to vary the operating
depth of the tools, as pointed out before, is ac
complished by means of crank 5|.
In operating a two-way plow, it is well known
of a transverse rock-shaft 12. This rock-shaft 12 60
that under many conditions it is necessary to
is journaled in the brackets 1| and is provided
shift the hitch point of the plow en the tractor.
adjacent its ends with laterally spaced sleeves 13.
The connection of the hitch arch fifi to the draft
These sleeves are held against lateral displace
bar 5I for lateral movement has already been
ment on the shaft 12 by collars 1d. Secured to
described. The mechanism by which this lateral
sleeves 13 are lifting arms 15, which extend up
shifting is accomplished includes a quadrant 92
wardly and rearwardly and are provided at their
having a level` 93 adapted to move th ereover, and
upper ends with pivot members 18 having at
pivoted at Sli upon an extension of the angle mem
tached thereto chains 11, the lower ends of which
ber 58. The usual detent mechanism 85 is pro
are attached to brackets 18 on the respective
vided for engagement in notches 85 in the quad
beams 28 of the plow units I1 and I8. Arms 15
Also attached to the angle member 58 by bolts
18 are laterally spaced standards 1I, having at
their upper ends rearwardly bent portions having
openings at their ends adapted to receive the ends
thus have rocking movement about the shaft 12
to raise and lower the plow units. Rocking of the
arms 15 for vertically moving the plow units is
eifected by means of connecting rods 19 vand 18a,
76
the rear ends of these rods being pivotally con- '
rant. The lower end of the lever 93, projecting
beyond the pivot 55, is connected by a forwardly
extending rod 51 to one arm 98 of a bell-crank 99
pivoted at ‘I 88 upon a bearing member l 8i secured
to the `lrft-hand strap 55. Another arm §52 of
5
2,407,064
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bell-crank 99 is provided atits end with an open
ing for the connection of a link |03, which extends
between operating and transport positions, ín
laterally and is bent at one end for insertion in
one or more openings |04 in the member 53. rI‘hus`
movement of lever 93 over the quadrant 92, acting
of the operating working unit, ground-contacting
wheels for supporting the operating working unit
cluding means permitting free floating movement
in >its working position, and rope and pulley means
through bell-crank 99, laterally moves the-hitch
arch 44 to bring the operating plow unit into
proper plowing position with respect` to? the
tractor. It will also be noted that this lever and
quadrant arrangement is a part of the plow struc
ture and is detachable therewith from the tractor.
Detachment of the entire implement from the
tractor requires merely the disengagement of the
connecting rods 19 and 19a, and the angle mem
bers 58 and straps 60.
connecting the lifting meansA for each said unit
,with said supporting wheels and ineffective to
raise ‘said supporting wheels during alternate
operation of saidunits, but effective to raise said
supporting wheels when both said units are lifted
totransport position.
,
`5..'The‘combination with a tractor of a direct
connectedv two-way plow comprising laterally
spaced longitudinally extending earth-working
~
15 units adapted for alternate operation, longitudi
nally extending hitch means connected at its
forward end to the tractor. for vertical pivotal
Having now described the invention, it should
be` understood that modifications may be made
therein without departing from the spirit of the `
movement, means pivotally connecting the for
invention or the scope of the appended claims.
What is claimed is:
f`
1. In a tractor-mounted two-way plow having
Working units adapted -for alternate operation,v
lifting means for vertically moving the working
units independently between operating and trans
port positions, a ground-contacting gauge wheel 25
associated with each said unit, means for ver
tically adjusting each said gauge wheel withre
spect to its associated workingïunît to vary the
ward ends of said working units to the rear end
of said hitch means for relative vertical move
ment, lifting means deriving power from the
tractor for verticallyk moving said working units
independently between operating and transport
positions including means permitting free ñoat
ing movement of the operating working unit, lat
erally spaced `ground-contacting gauge wheels
supporting the rear end `of said hitch means,
means for vertically adjusting said gauge wheels
with respect to said workingunits, and means
depth of operation thereof, and connecting means
between said lifting means and said gauge wheels 30 operatively connecting said lifting means and
effective to remove both said gauge wheels from
said gaugewheels for raising said wheels outof
contactl with the ground when both said units are
contact with the ground when both of said units
raised to transport position, butineifective to re
are lifted to transport position, said ‘connecting
move said gauge wheels from the ground when
means being inoperative to raise said wheels
either of said units'is in operating position.
35 when either of saidunits is in operating posi
2. In a tractor-mounted two-way plow having
' tion.
working units adapted for alternate operation,
6. 'I/'he combination with a tractor of a direct
lifting meansfor vertically moving the working
units independently between operating and trans
connected two-way plow comprising laterally
`spaced longitudinally extending earth-working
port positions, means permitting i~ free ïiioating 40 units adapted for alternate operation, longitudi
movement of the operating working unit, a
ground-contacting gauge wheel associated A_with
each said unit, means for vertically adjusting
each said gauge wheel with respect to its asso
ciated working unit to vary »the depth of opera
tion thereof, and connecting means between said
liftingmeans and said gauge wheels effective to
nally extending hitch means connected at its
forward end to the tractor for vertical pivotal
movement, means pivotally connecting the forward
ends offsaid working units to the rear‘end of said
-' hitchrmeans for relative vertical movement, lift
ing means deriving power from the tractor for
vertically moving said working units independ
remove both said gauge wheels from contact with
ently between operating and transport positions
the ground when both `said` units are raised to _
including means permitting free fioating` move
transport position; but ineffective to remove said 50 m'ent‘ofïthe operating working unit, and con
gauge wheels from the ground when either of said
necting means between said lifting means randthe
units is in operating position.
l ` '
rear end of said hitch means for vertically 'pivot
l3. The combination with a tractor of a direct
ing said hitch means simultaneously with Vthe
connected two-way plow ' comprising laterally
lifting of both of said working units, said con
spaced longitudinally extending earth-working
units adapted for alternate operation, lifting
55 necting means being ineffective to pivot said
means deriving kpower from the tractor for ver
tically moving said working units independently
between operating and transportr positions, in
cluding means permitting free floating movement
of the operating working unit, ground-contacting 60
wheels for supporting the operating working unit
hitch means when either of said units is inoper
ating position.
'7. 'I‘he combination with a tractor of a direct
connected two-way plow comprising longitudi
nallyV extending hitch means connected at its
forward end to the tractor for vertical pivotal
movement and having a, transverse member at
in its working position, and connecting means
the rear end thereof, a gauge wheel supported
between said lifting means and said working units
at each end of said member, means for independ
elfective to raise said supporting wheels out of 65 ently vertically adjusting said wheels, laterally>
ContactI with the ground when both said units are
spaced longitudinally extending earth-working
lifted to transport position, but ineifective to raise
units adapted for alternate operation, and means
said supporting wheels when either of said units
pivotally connecting the forwardends of both
is in operating position.
¿ ' -*
'
;
'
said `units to said transverse member forvertical
4. The ‘combination with a tractor of a direct
70
connected two-way plow comprising laterally
movement.
spaced longitudinally extending vearth-working
unitsv adapted for alternate operation, lifting
means deriving power from the tractor for verti
‘
«
, 8.` The combination with a tractor of a direct
connected two-way plow comprising longitudi
nally extending hitch means connected at `its
forward 'fend to the tractor for verticalfpivotal
cally moving .said working units independently 75 movement .and having atransverse member at
2,407,064
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8
spect thereto, means mounted on said stationary
the rear end thereof, a gauge wheel 'supported at
each end of said member, means for independ
portion for laterally adjusting said swinging p0r
ently vertically adjusting said wheels, laterally
spaced longitudinally extending earth-working
tion with respect to said stationary portion, a
units adapted for alternate operation, means piv
otally connecting the forward ends of both said
units to said transverse member for vertical
movement, and lifting means deriving power from
said shaft, lifting connections between said rock
shaft on said stationary portion, a rock arm on
arm and .said tool-supporting frame, ground
contacting gauge means on said hitch structure
adjacent the connection of said frame thereto,
and means on the swinging >portion of said hitch
structure for vertically adjusting said gauge
wheel relative to said tool-supporting frame.
13. In an agricultural implement adapted for
the tractor for vertically moving said working
units independently between operating and trans
port positions, including means permitting free
floating movement of the operating working unit.
connection to a tractor, in combination, a lon
9.l In combination with a tractor of a direct
gitudinally extending hitch structure pivoted at
connected two-way plow comprising longitudi
nally extending hitch means connected at its for
ward end to the tractorforf vertical pivotal move
15 its forward end to the tractor for vertical move
ment, a tool-supporting structure pivoted to the
rear portion of said hitch structure for vertical
movement relative thereto, ground contacting
ment and having a transverse member at the 4rear
end thereof, a gauge wheel‘supported at each end
of said member, means for independently ver
tically adjusting said wheels, laterally vspaced
longitudinally extending earth-working units
adapted for alternate operation, means pivotally
means supporting the forward end of said tool
20 supporting structure, lift mechanism on the
tractor, means connecting the lift mechanism t0
the tool-supporting structure for vertical move
ment thereof, and separate means operatively
connecting the forward ends of said units .to said
connecting said lif-t mechanism to said ground
transverse member for vertical movement, lift
ing means deriving power from the tractor for 25 »contacting means for effecting movement there
of with said tool-supporting structure when the
vertically moving said working units independ
latter is raised to transport‘position,
ently between operating and transport positions,
14. In an agricultural implement adapted for
including means permitting free floating move
connection to a tractor, in combination, a longi
ment of the operating working unit, and con
necting means between said lifting means and 30 tudinally extending hitch structure ‘pivoted at its
forward end to the tractor for vertical move
said transverse ymember effective to raise said
ment, a tool frame pivoted to the rear end of said
gauge .wheels out of contact with the ground when
hitch structure on »a transverse axis for vertical
both said'units are lifted to transport position,
movement `relative thereto, lcrank axles pivoted
but ineffective to raise said wheels when either
on the pivot a-xis of said tool -frame to said hitch
of said units is in operating position, whereby
structure, laterally spaced gauge wheels on said
both of said wheels serve as gauge means for the
working unit in operating position.
l0. A unitary plow and -hitch assembly for di
crank axles, means on said tool frame for adjust
rect connection to a tractor to be supported
lift mechanism on the tractor, means connect
thereby, comprising a hitch structure, a longitu
dinally extending tool-carrying frame pivoted at
ing the vertical position vof said gauge wheels,
40 ing the lift mechanism to the tool frame for piv
otal-movement thereof about said pivot axis, and
its forward end to said hitch structure for verti
cal movement, a gauge ‘wheel on said hitchfstruœ;
ture adjacent the connection of said frame there
to, means on said hitch structure for vertically 45
adjusting said gauge wheel, a shaft on said hitch
connection to a tractor or the like, a longitudi
structure, a rock arm on said shaft, lifting con
nally extending hitch structure ypivoted at its for
nections between said yrock arm and said tool
supporting frame, and bolt and slot means fo-r
quick-attachably connecting saidlhitch structure
to a tractor.
'
.11..A unitary plow and hitch assembly for di
rect connection to a tractor to be supported
means operatively connecting said lift mecha
nism to said gauge wheels for effecting move
ment thereof with said too-l frame when the lat
ter is raised to transport position.
l5. In an agricultural `implement adapted for
50
ward end to the tractor for vertical movement,
a too-l-supporting structure pivoted to the rear
end of said hitchstructure for vertical movement
relative thereto, said tool supporting structure
including independently operable units, one of
which is placed in operating position while the
other is inoperative, ground-contacting wheel
thereby, comprising a hinged hitch structure in
cluding a stationary portion having means for 55
means supporting the forward end of said tool
the attachment thereof to a tractor and a verti
supporting structure, independently operable lift
cally swinging portion, a longitudinally extend
mechanisms on Ithe Atractor connected to said
ing tool-carrying frame pivotally attached at its
units for effecting independent vertical move
forward end to the free end of said vertically
ment thereof to transport position, and separate
swinging portion for vertical movement with re
means connecting said llift mechanisms to the
spect thereto, means mounted on said stationary
forward end of said tool supporting structure ad
portion for laterally adjusting said swinging por
jacent its ¿pivot axis and operative tto raise Ithe
tion with respect to said stationary portion, a,
front end of said tool-supporting structure when
shaft on said stationary portion, a rock arm on
said shaft, and lifting connections between said 65 both said units are lifted to transport position,
but inoperative to raise the front end of said
rock arm and said tool-supporting frame.
tool-supporting structure when either of said
12. A unitary plow and hitch assembly for di
units is in operating position.
y
rect connection to a tractor‘to be .supported
16. In a two-way plow adapted for connec
thereby, comprising a hinged vhitch structure in
cluding a stationary portion having means for 70 tion to a tractor, in combination, a pair of lon
the attachment thereof to a tractor and a verti
gitudinally extending independently operable
cally swinging portion, a longitudinally extend
ing tool-,carrying frame pivo‘tally attached at its
forward end to the free end of said vertically
plow units pivoted at their forward ends for
vertical movement between operating and trans
port positions, draft lmeans connecting the front
swinging portion for Vertical movement with re
ends of said units, laterallv spaced gaugewheels
2,407,064
10
supporting the front ends of said units, inde
pendently operable lift mechanisms on the
tractor, means connecting said lift mechanisms
to the respective plow units for independent
pivotal movement thereof, means operatively
connecting both of said lift mechanisms to said
gauge wheels for vertical movement thereof with
units, laterally spaced gauge wheels supporting
the front ends of said units, independently oper
able lift mechanisms on the tractor including
laterally spaced arms pivoted on'the tractor for
vertical movement, means connecting said lift
the plow units when the latter are both raised to
arms to the respective plow units for independent
pivotal movement thereof, flexible means con
necting said lift arms. means slidably connect
transport position, said last mentioned connect
ing said flexible means with said draft means
ing means being so arranged as to be ineifective
to raise the gauge wheels when only one of said
for lifting said gauge wheels when both said plow
units are raised `to transport position, said lift
ing mechanism being ineffective to lift said gauge
wheels when either of said units is in operating
units is raised to transport position.
17. In a two-way plow adapted for connec
tion to a tractor, in combination, a pair of 1on
position.
gitudinally extending, independently operable 15
i9. In a two-way plow adapted for connec
tion to a tractor, a pair of longitudinally extend
plow units pivoted at their forward ends for
ing independently operable plow units pivoted at
vertical movement between operating and trans
their forward ends for vertical movement between
port positions, draft means connecting the front
operating and transport positions, draft means
ends of said units, laterally spaced gauge wheels
supporting the front ends of said units, inde 20 connecting the front ends of said units, laterally
spaced gauge wheels supporting the front ends
pendently operable lift mechanisms on the
of said units, independently operable lift mecha
tractor, means connecting said lift mechanisms
nisms on the tractor including laterally spaced
to the respective plow units for independent
arms pivoted on the tractor for vertical move
pivotal movement thereof, means operatively con
necting both of said lift mechanisms to said 25 ment, means connecting said lift arms to the
respective plow units for independent pivotal
gauge wheels for vertical movement thereof with
movement thereof, a cable extending between
the plow units when the latter are both raised
said arms and depending therefrom, pulley
to transport position, said last mentioned con
means adjacent the front ends of said units ar
necting means being such that both of said gauge
wheels remain upon the ground in gauging re 30 ranged to slidingly receive the intermediate por
tion of said cable and suspend the front ends of
lation to the o-perating plow unit, and are raised
said units with the associated gauge wheels above
only when both plow units are lifted to transport
the ground when both said plow units are in
position.
transport position, sufficient `slack being intro
13. In a two-way plow adapted for connec
tion to a tractor, a pair of longitudinally ex
tending independently operable plow units piv
oted at their forward ends for vertical move
ment between operating and transport positions,
draft means connecting the front ends of said
duced in said cable when either of said units is
in operating position to permit said gauge Wheels
to rest upon the ground.
FREDERICK L. DEWEY.
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