вход по аккаунту


Патент USA US2407080

код для вставки
Sept. 3, 1946;
Filed March 8, 1945
2 Sheets-Sheet 2
Patented Sept. 3, 1946
Arnold E. W. Johnson, Oak Park, and John R.
Orelind, Wilmette, Ill., assignors to Interna
tional Harvester Company, a corporation of New
_ Application March, 8, 1943, Serial No. 478,462
2 Claims.
(Cl. 254-86)
This invention relates to a new and'improved
closures in the following speci?cation and accom
tractor jack with ?nger-tip control and is an
improvement over pending applications having
Serial No. 472,619, ?led January 16, 1943, for
“Repair apparatus for vehicles,” now Patent No.
panying drawings, in which: f
Figure 1 is a side elevation of a tractor incor
porating the tractor jack with ?nger-tip control:
Figure 215 a rear elevational view of the struc
ture shown in Figure 1, the View showing one of
the wheels in section; and
2,380,313.0f July 10, 1945, and Serial No. 466,463,
?led November 21, 1942, for “Power adjusting
mechanism,” both of these and the subject appli
Figure 3 is a View similar to Figure 1 of a com;
cation being assigned. to the common assignee,
bined jack and implement.
International Harvester Company,
As shown in the drawings, reference numeral
11-, is an important object of this invention to
lo indicatesgenerally a tractor of the usual type
provide a jack especially adapted for tractors or
having a Chassis l2 upon which is mill-In?eld a
is actuated by power supplied
e rear ax es
_a» Dani (31f .rf?ll: $12195 15'
are Journa e W1 1n caring
Jacks are employed on tractors and other 15 members “3 and Support large Wheels 20, Which
vehicles‘ of this nature for the several purposes of
Ordinarily accompany agricultural tractors
varying the wheel spread, to switch the wheels,
The Wheels 29 are of the concave-convex disk
to make tire repairs. A tractor is generally a
very heavy vehicle, and the wheels employed
hag/111g a hub pil‘tion 22, as zest zszlovizn?iln
'gl-ll'e , an an 01-1 81‘ rim mem 91'
thereon are of a size incapable ofpbeing handled 20 dl‘flp-cehtel‘ type~ Ibis, Of course, Understood that
As disclosed in our previous ap-
thls wheel and assembIy may be of any construc
plication entitled “Repair apparatus for vehicles,”
tion desired and not necessarily as shown- A
having Serial No. 472,610, the jacks shown therein
were capable of lifting the tractor wheel from the
pneumatic the 25 is mounted on the Tim member
“it u b
t d th t (th , 1
ground and in addition supplied a mean .of re-
9 m? e
e ax e mem 8145
moving the raised Wheel from its position5 on the
elongated an‘? permit Various Wheel Spreads Sim‘
axle. The other application mentioned
above, namely, “Power ad'ustin mechanism,”
having gel-m1 NQ 465’463, 1J5 diregcted chie?y to
Thesetractor wheels are quite large and cumberfv
pose 0
ma in
avai a
e accura
n er- '
I)?’ a101317yattgcgliglotglge
p n
gain 02: aflethixgh‘igl'
trol for the trim‘, power lift mgglns_ gonilifcz?e
are repositioned at some new point on their axles -
requirements of a tractor jack is that it be
or entirely. removedfor the several purposes of
capable of lifting within minute predetermined
changmg sldes' iiummfg ghe “711116811 airound saith?
ated by theto tractor
have complete
power take-oil
over itthe
Its m1t.1a1p
tm? rerfmrs'
. eour
w prew
limits, and, inasmuch as the jack is directly oper- 35 the. cmlved lportlon to W}? w 86 1st; ppo?l e1 0
amount of movement of this power take-off lever.
ous tafpphgatgn havmg .Senal N0i_’.§'12’6t10’ dang
To this end, the ?nger-tip control lever is posi-
the controls are so calibrated that a speci?c move-
by means Ofca p5“ of onposed c_shaped_ claims
.a "1?; glomPnses 1a Jeri? 5 an] ar
tioned within reach of the tractor operator and ‘10 ménr; e1; 3015 1:’; a’edyagggflléa?ele Z216 ED355861’;
gggeiggtgzi?sgtg ?ler Z3721’ iifioitcggzi'
32 and 34. "Ifhe clamp member 32 is welded or
otherwise rigidly attached to the sleeve 30_at
k _
spas ipower ta-e O? levers assPcmted W1“? 45 36 and has lunged thereto at 38 the opposing
tractors were not capable of‘accurate intermediate
clamp memberv 34_ An adjustable bolt 49 permits
stopping and quite often were only capable of full
movement between their extreme operating positlcns-
the upper portigns of the clamp members 32 and
34 to be drawn tightly together so as to be ?rmly
attached to the axle housing It. The jack fur
Therefore, a further important object of this 50 ther includes a horizontal extension 42 of the
standard 28, which acts as a boom for the recep
tion of a roller 44 having a shaft 46 therethrough
terminating in a crank 48. A bail 50 is carried
Other and further important objects of this
by the shaft 46 and has its bight portion dis
invention will become apparent from the dis- 55 posed below the boom 42 provided with an eye
invention is the provision of a tractor jack in
combination with a ?nger-tip control which
causes the jack to be locked in any position. '
ever point the ?nger-tip lever is stopped. A like
olt 52. The means for connecting the bail 50
?nger-tip lever 92 is pivoted at 94 and is capable
to the tire and wheel assembly or to the tire alone
of moving across the arcuate scale 96, which
preferably takes the form of a pair of tongs 54
is accurately calibrated and positioned in close
comprising elements 56 and 58. These tongs 56
proximity to the operator of the tractor so that
and 58 are best shown in Figure 2, wherein they
he may easily make any desired movement of
are in engagement with the rim 24 of the wheel
this ?nger-tip control lever 92. An extension 98
20. It will also be noted that the pivot 56 be
of the lever 92 beneath the pivot point 94 en
tween the elements 56 and 56 is directly below
gages a link arm I00, which in turn pivotally
the roller 44 and that the vertical line between
these two points is laterally offset toward the corn 10 engages an arm I02 and pivots it about a point
_ I04 so that a lower end I06 of the arm I02 con
cavity of the wheel 20. The arms of the elements
trols a valve actuating means including a mem
56 and 58 extend beyond the intersection thereof
ber I08 associated with an hydraulically operated
and are connected to the eye-bolt 52 preferably
device including a cylinder member H0. The
by means of a pair of ?exible chains 60 and 62.
member I08 is so adjusted that a movement of
The chain 62 is somewhat shorter than the chain
the finger-tip lever 92 causes an opening or clos
60, thus assisting in the lateral offset location of
ing thereof and permits greater or less move
the tong assembly with respect to the wheel as
ment of the piston (not shown) within the hy
sembly. Turning of the crank 48 causes the car
draulic cylinder IIO. Movement of the piston
rier assembly to move laterally inwardly or out
wardly on the boom 42 and, when the wheel 20 20 causes a direct movement of the arm 64. Pro—
Vision is also made within this hydraulic mecha
is loosened from the axle I6, the wheel assembly
nism to positively lock the piston in its ulti
is carried along. As will be seen in Figure 2,
mately assumed position, as determined by opera
the boom 42 is sufficiently long so that the wheel
tion of the valve I08 by the ?nger-tip lever 92.
assembly may be entirely removed from the aXle
The combining of the ?nger-tip control with
I6, in which position it may be removed from the
the tractor jack, as disclosed herein, is novel in
tractor or retained in its carried position and
asmuch as it produces a long sought-after de
spun around and reengaged with the axle I6
vice capable of much greater precision as re
opposite to its original position now having the
quired for tractor jacks in order that they be
concave side of the wheel positioned outwardly.
The jack is operated by means of a power lift 30 used successfully. It is now possible to accurate
ly raise one wheel of the tractor to any prede
arm 64, which is regular equipment on agricul
termined height. Such a condition is very de
tural tractors of the type shown, and such an
sirable inasmuch as the tractor wheels are so
arm is positioned on both sides of the tractor.
very heavy it is necessary, when mounting or
dismounting them, to have the axle at the exact
height for sliding of the wheel on or off without
the necessity of lifting it. The calibrated ?nger
As shown in Figure 1, the arm 64 pivots about
the shaft 66, which is journally supported within
the chassis I2. The arm 64 is ordinarily capable
of movementthrough an angle of approximate
tip control enables the operator to adjust the
ly 180°, and it is the utilization of this move
axle at just this proper height. Certainly the
ment that is here adapted to operate the jack.
Many mechanical means may be employed be 40 devices that were limited only to full arcuate
movement of the power-lift arm were not adapt
ed to the operation of tractor jacks, nor were
the devices that were capable of intermediate
stopping of the power arm to be successfully
utilized with a tractor jack, for the reason that
the axle height could not be adjusted to any
tween the arm 64 and the jack to cause the
chassis I2 and the sleeve 30 to move reciprocably
on the jack standard 28. The particular method
shown is merely one of many forms which are
shown in more detail in our previously ?led case
entitled “Repair apparatus for vehicles” and al
ready mentioned herein. A bell-crank lever 68
has angularly spaced arms ‘I0 and ‘I2 joined by
the fulcrum ‘I4. The arm ‘I2 is pivotally at
tached at ‘I6 to an apertured lug 18 on the verti
cal standard 28. The arm 10 is pivotally at
tached to a connecting rod 80 at 82, and the
arm at its other end is pivotally attached to the
arm 64 at 84. A link 86 pivotally connects the
fulcrum ‘I4 of the bell-crank 68 to the pivot
point 68 on the lug 90, which is an integral part
of the sleeve 30. The levers, as just described,
may be a single set or may be arranged in pairs
to increase the strength of the jack.
Heretofore, mechanisms have been employed
to actuate the power-lift arm 64, but most of
these have been restricted to full movement of
the arm between its extreme end positions, and
generally no provision was made for intermedi
ate stops of the arm. If intermediate stops of
the power-lift arm were available, noraccurate
means were ever provided to stop the arm at some
predetermined desired position. The above men
tioned application on “Power adjusting mecha
nism,” Serial No. 466,463, sets forth an easily
operated ?nger-tip lever which, upon being
moved through its arcuate range, causes an equal
arcuate movement of the power arm 64. Pro
predetermined height without much running
back and forth in attempting to get the power
arm in the right position. It is to be understood,
of course, that speci?c details of the type of
power-operated mechanism are not disclosed,
because they are not an integral part of this in
vention, but rather any device that permits ac
curate ?nger-tip control of the power-lift arm
will su?ice. For details of such a device, see they
above mentioned application having Serial No.
Figure 3 shows a cultivating implement II2
having earth-working tools I I4, which are adapt
ed to penetrate relatively soft ground and so
prepare it for proper crop raising. The imp1e~
ment H2 is directly mounted on the tractor I0
somewhat similarly to the mounting of the jack
standard, as shown in Figure 1. A bracket H6
is attached at II8 to an-axle housing I20, shown
as a square in cross section in contradistinction
to the circular housing I8 shown on the tractor
in Figure 1. A pair of lever arms I 22 and I 24
are pivoted respectively to the lower and upper
portions of the bracket H6 at I26 and I28. The
other ends of the arms I22 and I24 are pivoted
to a bracket I30 at the points I32 and I34, re
spectively. The cultivator H2 is bolted or other
wise attached to the shaft I36, which forms a
vision is made in that mechanism for providing
positive locking means of the arm 64 at what 75 unitary part of the vertical bracket I30. A link
arm I38, connected to the arm e4 at one end,
pivots about a point I40, which point forms an
arc described by a connecting link I42 pivotable
about its lower end at the point I28 on the
bracket II6. A link arm I44 interconnects the
bracket I30 by connection at a point I46 with
the arms I38 and I42 at their pivot point I40.
A sleeve I48 is slidably adjustable along the
length of the link arm I44 and has an integral
bracket I50, which is adapted to receive a pin 10
through an aperture therein at the point I40 to
thereby join the three members I38, I42, and
I44. The depth that the cultivator is capable
of attaining is controlled by adjusting the sleeve
I43 either higher or lower on the link arm I44.
As shown in Figure 3, the ground level is at I52‘,
and the tractor wheel 20 is raised therefrom.
tools do not “give,” and the result will be a lift
ing of the rear end of the tractor.
We have developed a practically operable
tractor jack capable of commercial adaptation
for the sole reason that it is provided in com
bination with the ?nger-tip control, permitting
operation thereof in minute increments, and we
do not intend limiting the patent granted there
on otherwise than as necessitated by the ap~
pended claims.
What is claimed is:
1. In a tractor having a power source com
prising a swingable work arm, a hydraulic de
vice adapted to cause swinging movement of
15 said work arm, a control lever, actuating means
associated with said hydraulic device, linkage
between said control lever and said actuating
This conditionhas arisen, because the ground
means, the tractor having a jack means, said
I52 is so hard that the cultivator tools II4 can
jack means comprising a standard, sleeve means
not penetrate and, inasmuch as there is a direct 20 affixed to the tractor through which said stand
linkage connection between the power-lift arm
ard slides, a bell~crank lever having angularly
64 and the tools II4, the tractor itself then
spaced arms and a fulcrum therebetween, the
raises. Hence, this cultivator implement acts in
arms connecting the said standard to said work
place of a jack when used on ground hard enough
arm, and a link pivotally attached to said sleeve
to prevent penetration of the cultivator tools.
means and the fulcrum of said bell-crank lever,
Generally, ordinary earth is not packed solidly
whereby movement of the control lever causes
enough to resist penetration of implement tools,
the tractor to be raised or lowered with respect
so the tractor is run onto some hard ?ooring,
to said standard.
such as concrete or the like, and the ?nger-tip
2. In a tractor having a power source com
lever 92 moved along its arcuate scale to any 30 prising a swingable work arm, a control lever
desired point, and the rear wheels of the tractor
for effecting regulated movement of said work
are thereby raised or lowered, as required. It
arm by said power source, a jack means for the
will be seen that the implement performs all the
tractor, said jack including a standard, sleeve
functions of the jack disclosed in Figures 1 and
means affixed to the tractor and forming a rigid
2, except for the lifting and carrying of the
structure therewith through which the standard
wheel by means of the tongs 54 suspended from
slides, a bell-crank lever having angularly spaced
the boom 42.
arms and a fulcrum therebetween, the arms
I-Ieretofore, resilient means have been em
connecting the standard to the work arm, and
ployed intermediate the direct linkage connec~
a link pivotally attached to said rigid structure
tion between the power-lift arm 64 and the im 40 and the fulcrum of the bell-crank lever, whereby
plement tools II4, so that, upon actuation of the
movement of the control lever causes the tractor
arm 64 when the tractor is raised on some ?rm
to be raised or lowered with respect to said
support, the linkage could be reduced in length
to prevent injury of the tools. In the construc
tion shown in Figure 3, such resilient or yieldable 45
member has been entirely removed so that the
Без категории
Размер файла
556 Кб
Пожаловаться на содержимое документа