US2379797A - Stone carrier attachment for tractors - Google Patents

Description

July 3, 1945. L. GILBERT STONE CARRIER ATTACHMENT FOR TRACTORS Filed Dec. 3, 1943 2 Sheets-Sheet 1 July 3, 1945. 1.. GILBERT 2,379,797

STONE CARRIER ATTACHMENT FOR TRACTORS Filed Dec. s, 1945 '2 Sheets-Sheet 2 5 6' EJ 20 02 Gz'lieri v Patented July 3,1945

* UNITED STATES. PATEN T OFFIC .s'romi' caanma ATTACHMENT ron morons Lloyd Gilbert, Ravenna, Mich. Application-"3, 194:, Serial No. 512,813

Claims. (01.214-130) This invention relates to a stone carrier attachment for tractors, and it is an object of the invention' to provide an attachment of this kind to be. applied toa tractor which includes a hydraulic attachment as standard equipment and wherein the attachment is so constructed and mounted as to easily pick up stones of a weightup to approximately 1,500 pounds and readily transport the same and also wherein the attachment can be readily and conveniently employed to shunt or roll about stones which are of extreme size and weight.

The invention consists in the details of con-- structlon and in the combination and arrangeposition of certain of the parts beingshown in dotted lines;

Figure 2 is a sectional view taken substantially no the line 2-'-2 of Figure 1;

Figure 3 is a fragmentary view in top plan i1- lustrating certain'features of the invention as;

herein disclosed;

Figure 4 is a fragmentary view partly in sec-" 'tion and partly inside elevation of the structure illustrated in Figure 3; and

Figure 5 is a transverse sectional view taken through the forward portion of the carriage.

-As disclosed in the accompanying drawings, I denotes a rock shaft at the rear portion of the tractor T which is herein disclosed as within the upper portion of the rear housing H and extendinclined posts I5 terminating a material dising out beyond opposite sides thereof. This shaft I v I within the housing is provided with 2. depending rock arm 2 operatively engaged with the hydraulically operated piston 3 working within a cylinder 4. The cylinder 4 is in proper communication with a small pump to be driven on the tractor motor and under ready control from the seat of the tractor, as by a small lever. As the mounting and operation of the rock shaft I forms no part of the present invention but is a part of the usual form of farm tractor, it is believed that a diagrammatic showing of the same i suilicient. The extremities of the shaft I are provided with the outwardly disposed rock arms 5 to the outer extremities of which are operatively engaged, as at' 8, the, rigid links I of desired length which, in turn, are operatively connected, as at 8, with the elongated rigid arms 9 at a point closely adjacent to but inwardly of the longitudinal centers thereof.

These arms 9 have their inner extremities pivotally connected, as at III, with the frame or chassis F of the tractor, whereby the arms 9 are mounted for up and down swinging movement.

,The arms 9 are at all times substantially parallel as determined by the rigid link 1 and it is believed 'to be readily apparent that upon requisite movement of the piston 3, the arms 9 may be raisedor lowered as desired.

Located between the forward or outer end portions of the arms 9 is the stone carriage C, herein disclosed as formed of one length of bar material of requisite gauge. The carriage C is formed to privide the relatively long side members II which constitute runners which may readily run over the ground surface when the carriage C is in its lowermost position. The forward extremities of these side members II are continued by the upwardly directed and forwardly inclined posts I2 each provided at its upper extremity with the outwardly and laterally disposed trunnions I4 each of which is rotatably disposed through the outer or free extremity of an arm 9, whereby the carriage C as a unitvhas swinging movement independently of and relative to the arms 9.

The rear extremities of the side member's II are continued by the upwardly and forwardly tance below the upper extremities of the posts I2. The upper portions of these posts I2 are inwardly rounded and connected by an integral cross member I6 which is at an elevation above the side members II.

Rotatably engaged, as at IT, with the central portion of the cross member I6 of the carriage C is the lowerextremity of a heavy rigid member or bar I8. This bar I8 has its upper endp'oiftion pivotally engaged by the bolt I9 between' tlue portion of the housing H and surrounding the 2 2,379,797 shank 24 and interposed between the head 23 and the adjacent ppper portion of the housing H is an expansible coiled spring 25 of requisite tension and which serves to constantly urge the upper pivoted end portion of the bar is outwardly to assure the most effective operation of the carriage C and also to assure the bar is to be in effective position to serve as a retaining back for the carriage C to assure the desired maintenance of a stone to be handled in proper position'upon the carriage C and particularly when the carriage C is elevated to transport the stone from one location to another.

Interposed between and connecting the inner portions .of the arms 9 and the lower portion of the housing H are the flexible members 26 herein disclosed as heavy chains. Each of these members or chains 26 is of a length to hold the arms 9 against outward spread under the weight of a stone received upon the carriage C.

It is believed to be readily apparent from the foregoing description and from the accompanying drawings that the carriage C upon proper manipulation of the tractor T may be caused to properly engage a stone of considerable size and lift the same so that the stone can be readily moved. It is also believed to be readily ap parent that the applied attachment can be used with facility to shunt or shift a stone too large to be lifted by the carriage C.

As is clearly pointed out in the drawings, it is to be noted, as at 21, that the connection between the arms 9 and trunnions I4 is of a universal type to assure such flexible movements as may be necessary.

It is also to be noted that the cross member 2. A stone carrier attachment for use in con nection with a vehicle including power operated rock arms at an end thereof, members for pivotal connection with the vehicle at an end thereof, means for connecting said members to the rock arms for raising and lowering the members upon swinging movement of the rock arms, a carriage positioned between the forward portions of the,

members and including upstanding front posts pivotally engaged with the forwardextremitles of the members, a rear cross member, and an upmembers, the cross members being at the rear ex- 16 at opposite sides of the member or bar l8 and closely adjacent to such member or bar is surrounded by the rings or annular members 28 welded or otherwise rigidly mounted and which rings or annular members 28 serve to prevent relative shifting of said cross member I6 and the rigid member or bar l8 which otherwise would have a tendency to get the attachment out of balance or effective position.

From the foregoing description it ,is thought to be obvious that a stone carrier attachment for tractors constructed in accordance with my invention is particularly well adapted for use by reason of the convenience and facility with which it may be assembled and operated.

What is claimed is:

l. A stone carrier attachment'for use in connection with a vehicle including power operated rock arms at an end thereof, members having pivotal connection with the vehicle at an end thereof,

extremities of the members, spaced side portions I and a rear cross member, and a rigid upstanding back bar pivotally coupled with the rear cross member of the carriage and with the vehicle.

tremities of the side members and upwardly offset with respect thereto.

3. A stone carrier attachment for use in connection with a vehicle including power operated rockarms at anend thereof, bar members each having pivotal connection at one end with the vehicle, lift links connecting said'members to the rock arms for raising and lowering the members upon swinging movement of the rock arms, a carriage positioned between the other endsof the members comprising a substantially U-shaped frame having the side portions thereof disposed substantially parallel with the ground and pivotally coupled at their free ends with the said other ends of the members, an upstanding back bar pivotally coupled between the yoke portion of said U-shaped carriage frame and with the vehicle, and means for constantly urging outward and downward pressure upon the upstanding bar.

4. A stone carrier attachment for a vehicle, comprising a carriage member having spaced parallel side bars designed to position upon the ground in parallel relation with the path of travel of the vehicle, the said side bars at the ends nearest the vehicle being extended upwardly and transversely to form a cross connecting yoke, the

, free end portions of the bars being inclined upwardly and laterally toward the adjacent vehicle,

means extending forwardly at an elevation above the yoke and connecting the laterally inclined ends of the bars with the vehicle for facilitating the raising of the free ends of the bars, and means pivotally connecting the central part of the said yoke portion with the vehicle and providing a rigid fulcrum arm for the yoke end of the carriage.

5. A stone handling carriage comprising a substantially rectangular frame open at one end, the frame comprising spaced substantially parallel side bars designed to slide over the ground, the

- side bars at one end of the frame being extended outwardly.

upwardly obliquelyand then extended transverse 1y to form a cross connecting yoke, the free ends of the side bars at the other end of the'frame being bent to extend upwardly at an acute angle to the adjacent side bars and extending laterally LLOYD GILBERT.

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