US1562015A - Lifting jack - Google Patents

Description

Nov. 17, 1925. 1,562,015

S. J; VESELY LIFTING JACK Filed Jan. 25. 1924 Patented Nov. 17, 1925 UNITED STATES STANLEY J. VESELY, OF CEDAR RAPIDS, IOWA.

LIFTING JACK.

Application filed January 25, 1924. Serial No. 688,401.

To all whom it may concern.

Be it known that I, STANLEY J. VESELY, a citizen of the United States, residing at Cedar Rapids, in the county of Linn and State of Iowa, have invented certain new and useful Improvements in Lifting J acks, of which the following is a specification.

This invention relates to lifting jacks of the type shown and described in my former application for patent, No. 681,487, filed Dec; 17, 1923, and the object of this invention is to adapt such a jack to convenient use at a considerable distance. A further object is to make the jack automatically self- I 5 sustainable at any elevation, without the use of pawls or the like movable parts.

The invention is fully disclosed in the description and claims following, reference being had to the accompanying drawing, in

which p Fig. 1 is a side elevation of a jack embodying my invention. Fig. 2 is a plan view of its base and connected parts, as seen below the section line 22 of Fig. 1.

In the drawing, the numeral 5 denotes a rear wheel, 6 a rear spring, and 7 a part of the body of a motor vehicle, such as a truck, all the parts being shown conventionally. The ack is shown mounted under the spring, as is common in such an operation. It comprises, as its main features, a base 8, a standard 9 rising therefrom, preferably tubular, a post sliding telescopically in the standard, a collar 10 slidable on the standard, and a toggle composed of long levers 11 and short levers 12 and 13 connecting with the standard, the post and the collar, respectively. It is evident that a movement of the collar downwardly will elevate the post, and vice versa. 7

In many cases it is desired to set the jack in a position where it would be impossible, or inconvenient to operate a short hand-lever. Such a case is illustrated, by the truck herein shown, with a body extending far to the rear. The device to render such an operatioii easy and convenient will now be described.

The base is provided with bearings 14, and in these is mounted the drum 15 of a winch the collar is drawn downwardly, and

winch, adjacent to the'standard. On the winch-drum is wound a cable 16, with its upper end attached to the collar above mentioned. By the winding of the cable on the the jack and its load elevated. The winding apparatus consists of a shaft or shank 17, provided with turning means, a handwheel, for example, 18, and connected with gearing to drive the drum. The gearing preferred for the purpose is a worm-gear 19 and worm 20, the former attached to the winch-shaft, and the latter suit-ably mounted in bearings 21. For convenience in handling the jack when not in use, the handwheel shaft may be a socketed shank to take the squared end of the worm-shaft, and thus be easily attached and detached.

Itis evident that the jack may be slid to position by the operator holding the hand.- wheel or shank, and without having to stoop or crawl under the outstanding obstruction. When in position, the operating of the jack, and elevating of its load is easily done, and without putting ones body in a constrained or awkward position. The worm-gear of course holds all the take-up in lifting, and the jack collapses by gravity when the movement is reversed.

The peculiar property of the-toggle, to elongate rapidly, gives the post a quick movement endwise, while the gearing connected with the winch gives the jack great power for the lifting of heavy loads.

Having thus described my invention, I claim:

1. In a lifting jack, the combination of a base, a standard rising therefrom, a post slidable in the standard, a collar slidable on the standard, a toggle connecting hingedly with the post, standard and collar, a which mounted on the base, and a cable connecting the winch and collar.

2. In a lifting jack, the combination of a base, a standard rising therefrom, a post slidable in the standard,-a collar slidable on the standard, a toggle connecting pivotally with the post, standard and collar, a winch mounted on the base, a cable therefor connecting with said collar, an extended shank provided with a lltl'l'lCl-lBVBI', and gearing eonneeting the same With said Winch, whereby the jack may be operated from a distance.

3. A lifting jack substantially as described, con'ipi'ising a base, a standard rising therefrom, a post slidable in the standard, a collar slidable on the standard, a toggle pivotally connecting with the post, standard and collar, a Winch mounted on the base, a cable therefor connecting With the toggle, 10 Worm-gearing to drive said Winch, and an elongated, hand-lever and shank adapted for the operation of the Winch at a distance.

In testimony whereof I aflix my signature.

STANLEY J. VESELY

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