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Патент USA US2392903

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Jan. 15, 1946.
.
D, cuRRiE
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2,392,903
HITCH ATTACHMENT FOR TRACTORS
Filed Oct. 15, 1944
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vINVENTOR
, DONALD CURRIE
764 4“; . M444 ,
2,392,903
Patented Jan. 15, 1946
UNITED STATES PATENT OFFICE
2,392,903
HITCH ATTACHMENT FOR TRACTORS
Donald Currie, Odebolt, Iowa
Application October 16, 1944, Serial No. 558,912
5 Claims. (CI.
This invention relates generally to tractor
hitches and in particular to a hitch attachment
for a tractor provided with what is commonly re
ferred to as the “Ferguson” system for connect
ing farm implements with a tractor.
In one form of the Ferguson system a trans
verse draw bar is generally supported an appre
ciable distance behind the tractor rear axle hous
ing. As a result ‘when a farm implement is.
hitched to the draw bar much difficulty is en
countered in making turns at the end of a ?eld
when working in plowed or loose ground due to
the fact that the implement does not closely track
behind the tractor. To overcome this difficulty
hitch attachments have been provided for use 15
with the Ferguson system but these attachments
generally are bulky, relatively complicated, and
280-3344)
Pivotally supported at their rear ends on the
draw bar l2 are a pair of brace bars IS, the for
ward ends of which are pivoted at H to a rocker
arm I8, which in turn is pivoted at l9 to the top
side of the differential housing 9. A pair of
upright lifting arms 2| have their lower ends piv
otally connected at 22 to a corresponding one of
the frame members ‘I, while the upper ends of
the lifting arms 2| are operatively connected with
a crank arm 23 rotatably supported in a portion
24 of the tractor frame. The crank arm 23 is
operatively associated with lifting mechanism
f. not shown) for raising and lowering the arms 2 I.
In the use of the hitch attachment 5 of this
invention the frame 8 is maintained stationary
so that the lifting arms 2| constitute upright
frame members.
~
not readily and easily assembled or removed from
The hitch attachment comprises a transverse
the tractor.
member 26 having a pivot bolt 21 extended there
It is an object of this invention, therefore, to 20 through at a position centrally between its ends.
provide an improved tractor hitch.
A pivoted lever arm 28 is pivoted on the bolt 21
A further object of this invention is to provide
to the top side of the member 26 and is formed
a hitch attachment which can be quickly and
at one end with a handle 29 and at its opposite
easily assembled on a tractor provided with the
end with a cam portion 3|. When the lever arm
Ferguson system.
26 28 is in a pivotally moved position normal to the
A feature of this invention is found in the
member 25, as shown in Fig. 1, its end portion
provision of a hitch attachment which is capable
3| is extended forwardly of the member 26 for
of being connected with a tractor without the
a purpose which will appear later. The lever arm
use of bolts, or the like, additional to those pro
28 is locked in its normal position by an eye pin
30
vided on the tractor.
32 receivable through an opening 33 formed in
Further objects, features and advantages of
the lever arm 28 at a position such that the pin
this invention will become apparent from the fol
is adjacent to the front surface ofthe member
lowing description when taken in connection with
26 and in contact engagement with such surface.
the accompanying drawing in which:
In order to keep the pin-32 from becoming lost
Fig. 1 is a fragmentary perspective view of the 35 there is provided a chain 36 attached at one end
hitch attachment of this invention;
to the eye portion of the pin 32, and at its oppo
Fig. 2 is a sectional view as seen on the line
site end to the lever arm 28 adjacent the cam
2-2 in Fig. l: and
portion 3|.
Fig. 3 is a perspective view showing the hitch
A hitch bar 31 is pivotally connected at its
attachment in assembly relation with a tractor. 40 forward'end with the pivot bolt 21 and to the
Referring to Fig. 3 of the drawing the attach
bottom side of the transverse member 26. An
ment of this invention is indicated generally as
upright inverted U-shaped bracket member 38
5 and shown in assembly relation with a frame
carried adjacent the rear end of the hitch bar
6, supported on a tractor, and forming part of
31 rotatably supports a roller 39 in a spaced rela
a usual Ferguson system. The frame 6 com 45 tion with the top side of the hitch bar 31.
prises a pair of rearwardly extended diverging
In the assembly of the hitch attachment 5 with
arms ‘I having their front ends pivoted at 8 to
the frame 6 the lever arm 28 is moved to its dotted
opposite sides of a differential housing 9 consti
line position shown in Fig.3 and the member 26 is
tuting part of a rear axle housing I I. Connected
laid across the top sides of the rearwardly ex
between the rear ends of the members ‘I is a 50 tended frame members ‘I at a position forwardly
draw bar l2 having reduced ends l3 extended
of the upright arms or frame members 2|. The
through the members ‘I. The draw bar I2 is
member 26 is retained on the members 1 against
maintained in an assembly relation with the
longitudinal movement by a pin 4| spaced in
members ‘I by a tapered keep l4 projected through
wardly from each end of the member 26 and pro
65 jected downwardly therefrom. The pins 4| are
the ends I3.
2
2,892,903
spaced adistance apart corresponding substan:
tially to the distance between the frame mem
bers ‘I at their Junction with the frame members
bars, each of which 'islsupported at its lower end ,
on a corresponding-one of said divergingframe
members and connected at its upper end to the
2| so as to be engageable with the inner‘sides of
tractor above said axle housing, a draw bar ex;
the frame members ‘I when the-member 28 is in
tended between the rear ends of said diverging
a moved position against the lower rear sides of
frame members, a hitchattachment comprising a
transverse member supported on said diverging
the upright frame members 2!;
~frame members forwardly of said upright frame
With the member 26 thus supported on the
members, means retaining saiditransverse mem
frame members 1 one ‘of the pins H is removed
from the draw bar and the frame member ‘I corre 10' ber against movement laterally of said diverging
frame members, means adjustably supported on
sponding to such pin is sprung a distance away
said transverse member and movable to engage
from the corresponding end i3 of the draw bar II
ment with said axle housing to hold said trans
a distance sufficient to receive the bracket 88
verse member against the rear sides of said up
therethrough. The free end ii of the draw bar I2
is then inserted within the bracket 38 between 15 right frame members, a hitch bar pivoted at its
the roller 88 and the top side of the hitch bar 31.
forward end on said transverse member for piv
otal movement between said diverging frame
The sprung frame member ‘I is then reassembled
with the free end of the draw bar l2. The rear
members, and means movably supporting said
end of the hitch bar 3'! is thus movably supported,
hitch bar adjacent its rear end on said draw bar.
through the roller 39, for swinging movement lon 20 2. In combination, a tractor having an axle
gitudinally of the draw bar l2 concurrently with
housing, a frame supported on said tractor com
prising a pair of rearwardly extended bars con
being maintained in a plane substantially paral
nected at their forward ends adjacent the lower
lel with the plane of the draw bar.
side of said housing, a pair of upright bars corre
With the hitch bar 31 thus assembled with the
draw bar I 2 the lever arm 28 is moved from its 25 sponding to said rearwardly extended bars con
dotted line position shown in Fig. 3 to its full line
nected at their upper ends to the tractor above
said housing, a draw bar connected between the
position, also shown in Fig. 3, normal to the trans
rear ends of said rearwardly extended bars, a
verse member 25. At this normal position of the _
lever arm 28 the cam portion 3| is in engagement ' hitch attachment including a transverse member
with the rear side of the differential housing 9, 80 supported on said rearwardly extended bars for
wardly of said upright bars, with the ends of said
with the length of the lever arm between its pivot
transverse member being engageable with the rear
21 and the cam portion 3| being such as to retain
sides of said upright bars, means for holding said
the member 26 against the rear sides of the up
transverse member against movement laterally of
right frame members 2! and against forward
movement away from such position. The pin 32 85 said rearwardly extended bars, movable means on
said transverse member having a portion movable
is then dropped within the hole 33 to retain the
into abutting engagement with the rear side of
lever arm 28 against pivotal movement out of an
said axle housing to hold said transverse member
engaging position with the differential housing 9.
against the rear sides of said upright bars, a hitch
It is seen, therefore, that the hitch bar is pivot
ally supported for swinging movement at a posi 40 bar pivoted adjacent its forward end on said
transverse member, and means movably support
tion adjacent the rear side of the axle housing I I '
ing said hitch bar adjacent its rear end on said
and forwardly of the draw bar 12. By virtue of
draw bar.
this pivotal support of the hitch bar any farm
implement connected therewith is capable of a 45 3. A hitch attachment for a tractor comprising
a transverse frame member, a lateral projection
proper tracking with the tractor when sharp or
adjacent each end of said transverse frame mem
close turns are to be negotiated. It is also appar
ber, pivot means extended through said trans
ent that to assemble the hitch attachment 5 with
verse member intermediate the ends thereof, a
the frame 8 it is only necessary to remove a single
pin [4 to permit the insertion of the draw bar I! 60 hitch bar pivoted adjacent its forward end on said
pivot means and to one side of said transverse
within the bracket member 38 and that the re
' member, a lever arm pivoted on said pivot means
moved pin is immediately replaced on completion
at the opposite side of said transverse member,
of this assembly. A complete assembly can thus
said lever arm in one pivotally moved position
be accomplished in the manner of a few minutes
normal to said transverse member having one
without the requirement for belts or nuts which
55 end thereof extended forwardly of said transverse
might be readily lost or misplaced.
member, and means for locking said lever arm
From a consideration of the above description,
against pivotal movement in said normal position.
therefore, it is seen that the invention provides a
' 4. In combination, a tractor having an axle
hitch attachment for tractors which is of a simple
and inexpensive construction, easily and quickly
housing, a frame supported on the tractor com
prising a pair of rearwardly extended frame mem;
bers connected at their forward ends adjacent
the lower side of said‘ axle housing, an upright
frame member carried on each said rearwardly
ment connected therewith.
Although the invention has been described with 65 extended frame members, a draw .bar connected
between the rear ends of said rearwardly extended
respect to a preferred embodiment thereof it is to
frame members, a hitch attachment comprising
be understood that it is not to be so limited since
a transverse member supported on the tops of
modi?cations and changes can be made therein
said rearwardly extended frame members and
which are within the full intended scope of this
against the lower rear sides of said upright frame
invention as defined by the appended claims.
70 members, means on said transverse member en
I claim:
gageable with certain ones of said frame members
1. In combination, ‘a tractor having an axle
to retain said transverse member against longi
housing, a frame supported on the tractor com
attachable with a tractor with a minimum of
effort and time, and capable of providing for a
proper tracking with the tractor of a farm imple
tudinal movement when it is against said upright
prising a pair of rearwardly diverging frame
members connected at then-‘forward ends with 78 frame members, means movably supported on said
transverse member and movable into engagement
said axle housing, a pair of upright frame mem
2,392,903
with said axle housing to hold said transverse
member against said upright frame members, a
hitch bar pivoted adjacent its forward end on
said transverse member, and means movably sup_
porting the rear end of the hitch bar on said
3
forwardly of said upright frame members. and
adapted to be moved to a position against the rear
sides of said upright members, downward pro
jections on said transverse member engageable
with the inner sides of said rearwardly extended
frame members to hold said transverse member
5. In combination, a tractor having an axle
against longitudinal movement in said one posi
housing, a frame supported on the housing com
tion, a pivoted lever arm pivotally supported on
prising a pair of rearwardly extended frame mem~
said transverse member having one end movable
'bers connected at their forward ends adjacent. the 10 into engagement with the rear side of said axle
lower side of said axle housing, an upright frame
housing to hold said transverse member against
member on each said rearwardly extended frame
forward movement in said one position, means for
members connected at its upper end to the trac
locking said pivoted lever arm against pivotal
tor above said housing, a draw bar connected be
movement in an engaged position with said axle
tween the rear ends of said rearwardly extended
housing, and a hitch bar pivoted at its forward
frame members, a hitch attachment comprising
end on said transverse member and having its
a transverse member supported on the top sur
rear end movably supported on said draw bar.
faces of said rearwardly extended frame members
draw bar.
‘
DONALD CURRIE.
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