Патент USA US2407080код для вставки
Sept. 3, 1946; > A. E. w. JOHNS-ON ETAL > JACK , 2,407,080v ' Filed March 8, 1945 2 Sheets-Sheet 2 Patented Sept. 3, 1946 2,407,080 UNITED STATES PATENT OFFICE JACK Arnold E. W. Johnson, Oak Park, and John R. Orelind, Wilmette, Ill., assignors to Interna Jersey tional Harvester Company, a corporation of New _ Application March, 8, 1943, Serial No. 478,462 2 Claims. (Cl. 254-86) 2 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, 10 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 the Ill;9andmevghich is actuated by power supplied mm 013 rfIfll'll‘ward whl'iel e rear ax es and _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 or to make tire repairs. A tractor is generally a very heavy vehicle, and the wheels employed gm hag/111g a hub pil‘tion 22, as zest zszlovizn?iln 'gl-ll'e , an an 01-1 81‘ rim mem 91' 0‘ e thereon are of a size incapable ofpbeing handled 20 dl‘flp-cehtel‘ type~ Ibis, Of course, Understood that conveniently. 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 b is ground and in addition supplied a mean .of re- 25 ' W1 9 m? e a e ax e mem 8145 are moving the raised Wheel from its position5 on the elongated an‘? permit Various Wheel Spreads Sim‘ tractor axle. The other application mentioned above, namely, “Power ad'ustin mechanism,” a 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 30 . e 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? necessary ated by theto tractor have complete power take-oil controllever, over itthe is make Its m1t.1a1p tm? rerfmrs' acfamenArm“ ’.°ik° “a?remove shownu; . eour w prew ee 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- ‘gen 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 I otherwise rigidly attached to the sleeve 30_at n th t k _ p _ - _ ' 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. ' 2,407,080 3 4 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. 466,463. 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 5 2,407,080 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. 6 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 standard. ' ARNOLD E. W. JOHNSON. JOHN R. ORELDID. '