US153331A - Improvement in lifting and carrying jacks - Google Patents

Description

w. H. GODFREY.

Lifting and Carrying Jacks.

Patented July 21, 1874.

HIHI llllllll I I IHH wi -names. fi gcfl UNITED STATES WILLIAM H. GODFREY, OF ELMIRA, NEW YORK.

IMPROVEMENT lN LIFTING AND CARRYING JACKS.

Specification forming part of Letters Patent No. 153,331, dated July 21,1874; application filed June 20, 1874.

To all whom it may concern:

Be it known that 1, WILLIAM H. GODFREY, of Elmira, in the county of Ghemung and State of New York, have invented a certain new and useful Improvement in Sliding or Carrying Jacks; and I do hereby declare that the fol lowing is a full, clear, and exact description of the construction and operation of the same, reference being had to the accompanyin gdrawings, in which Figure 1 is an elevation. Fig. 2 is a plan.

My improvement is designed for all uses where loads are to be elevated and moved, such as replacing cars on tracks, moving buildin gs, &c.

The invention consists of a jack having an elevating-screw at the top and a gear-wheel at the bottom, which engages with a cog-rack'on a stationary bed, by which means the sliding or carrying motion is attained, as hereinafter described; also, in combination with the above, of two guides embracing the gear-w heel to keep it in place.

A is the jack, and B is the stationary bed. The jack consists of a standard having at its top an elevating-screw, G, of ordinary form, provided with a socketed head, a, and a swivel, b, for placing under the load. At the bottom it also has a spur-gear, D, which engages on one side with a cog-rack, d, on the bed B, and rests on the other side within a guide, f, which keeps the gear-wheel in engagement with the rack. The cog-rack and guide may be made curved or straight, as may be desired. The bottom of the standard, and also the head of the screw, have sockets g g for the insertion of the lever- E, by which the screw is elevated and the jack is turned. These devices may be made of all sizes, according to the work to be done. The bed is simply a plank or aframe, which is laid upon the ground, or other support, and is kept in place by the weight of the load which is being moved.

The operation is as follows: The bed and jack are placed in position under the load, the gear-wheel being engaged with the cog-rack at the end. The screw 0 is then turned up so as to elevate the load to the proper height, I

which is done by inserting the lever E in the holes 9 g of the socket-head and turning the same, the swivel I) allowing an easy turning motion under the load. when the proper height is attained the lever is applied to the sockets g g at the base of the jack, and turned in the proper direction for its gear-wheel to travel in the cog-rack, which thus serves as the fulcrum to the gear-wheel and gives a progressive motion to the jack, which carries the load with it.

If desired, any other means than levers may be used to ope'ate the jack and elevatingscrew.

The apparatus above described is particularly applicable for replacing cars on the track, as the work can be done very rapidly and readily. It is a so applicable to removing buildings, and, in fact, to many uses where weights are to be elevated and removed.

The novelty consists in combining, with a jack that has an ordinary elevating-screw, a gearing or equivalent device at the bottom, by which a progressive motion is attained; also, in the use of the rack d and rib f, embracing the cog-wheel between them, thus serving as guides or ways, which keep the gear in position and in proper engagement with the rack at all times in its progressive movement.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The combination of the jack, having the elevating-screw at its top and the gear-wheel at its bottom, with the cog-rack and the guide on the stationary bed, substantially as herein described. I

In witness whereof I have hereunto signed. my name in the presence of two subscribing witnesses.

WILLIAM H. GODFREY.

Witnesses:

R. F. Oseoon, E. B. Sco'rr.

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