US1079802A - Wagon-jack. - Google Patents

Description

B. SCHRADER.

' h WAGON JACK. AIPLIOATION FILED JAN. 30,1913.

- Patented Nov. 25, 1913.

BYRON SCHRADER, 0F WHITE EARTH, NORTH DAKOTA.

WAGON-JACK.

Specification of Letters Patent.

Patented Nov. 25,1913.

Application led January 30, 1913. Serial No. 745,272.

To all whom it may concern Be it known that I, BYRON SCHRADEE, a citizen of the United States, residing at White Earth, in the county of Mountrail, State of North Dakota, have invented certain new and useful Improvements in VVagon-Jacks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to wagon jacks and has for an object to provide an extremely simple and durable device of this character that will economize time in unloading grain from wagons or sleighs.

A further object is to produce a device which will effectively raise the forward ends of heavy grain carrying vehicles with minimum manual exertion.

A still further object is to produce a device of this character that-mayv be constructed of a minimum number of parts which will not easily get out of order.

With the above objects in view the invention consistsl o-f certain novel details of construction and combination of parts hereinafter fully described and claimed, it being understood that various modifications may be made in the minor details of construction within the scope of the appended claim.

In the accompanying drawing illustrating this invention z-Figure 1 is a front elevation. Fig. 2 is a side elevation. Fig. 3 is a reverse side elevation. Fig. 4 is a vertical sectional view. Fig. 5 is a cross sectional view on line 5-5 Fig. 1. Fig. 6 is a detail perspective view of one of the roller bearings.

Referring now to the 'drawing in which like characters of reference designate similar parts, the device is shown to consist of spaced standards 10 and 11 which are inclined toward each other and each consist of uprights 12 that converge toward their upper ends and have their lower ends connected by a ground sill 13. A cross bar,14 is terminally interposed between the upright-s of each standard, and connects the upper ends of the standards. The cross bar is braced by inclined braces 15 which are connected to the cross bar and to the uprights of the standards. The uprights of the standard 10 are suitably braced by cross and diagonal braces 16 and 17, while the uprights of the standard 11 are suitably braced by crossed diagonal braces 18 and 19.

A roller V20 is provided with an axial shaft 21 which is terminally journaled in bearings 22 carried by the cross bar 14, each bearing being of the general shape shown in Fig. 6 and including a metal yoke 23 the legs of which are arranged astride of and are bolted to the cross bar'by `bolts 24, the yoke carrying a journal box 25 for the reception of the shaft, and being equipped below the journal box with an eye 26.

A pair of blocks and tackles 27 and 28 are supported by the bearings 22, the upper block 29 of each tackle being hooked into the eye 26 of'the corresponding bearing. The lower blocks 30 o-f the tackles are connected by a chain 31. The end 32 of the cable of each block and tackle is secured to the central portion of the roller 20.

For actuating the roller a stub shaft 33 is journaledin cross braces 34 carried by the uprights of the standard 11 and is equipped with a hand wheel 35. A chain drive 36 connects the stub shaft with the shaft 21 of the roller.

In operation the wagon or sled to be unloaded is advanced underneath the cross bar 14 and the chain 31 engaged underneath the box. The hand wheel is now rotated with a resultant winding of the block and tackle cables upon the roller and resultant raising of the lower blocks 30 whereby the front end of the box is raised bodily.

What is claimed, is

A wagon jack including spaced standards, a cross bar connecting said standards at the tops, spaced bearings depending from said cross bar near the ends thereof, a roller terminally journaled in said bearings, a block and tackle carried by each bearing, the end of each tackle cable being` secured to said roller near the center thereof whereby lateral swaying of the load is prevented, a chain connecting the lower blocks of both tackles and adapted to be engaged underneath a wagon, and means for actuating said roller whereby to wind said cables thereupon to lift one end of the wagon.

In testimony whereof, I affix my signature, in the presence of two witnesses.

BYRON SCHRADER. lVitnesses G. O. HANGAN, J. S. ANDERSON.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.

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