US255318A

US255318A - momartin

Info

Publication number: US255318A
Authority: US
Publication date: 1882-03-21
Anticipated expiration: 1899-03-21

Description

J. A. MOMARTIN.

PUMP.

'No. 255,318. Patented Mar. 21,1882.

N4 PETERS. Phato-Ulhognphar. Waihingiom EC.

UNITED. STATES PATENT OFFICE.

JOHN A. MoMARlIN, or MONTREAL, QUEBEC, CANADA.

PU M-P.

SPECIFICATION forming part of Letters Patent No. 255,318, dated March 21, 1882.

Application filed November 7, 1877. Patented in England January 26, 1877. y

To all whom it may concern:

Be it known that I, JOHN ALEXANDER Mo- MARTIN, ot' the city of Montreal, in the district of Montreal and Province of Quebec, Canada, have invented certain new and use ful Improvements in Pumps; and I do hereby declare that the following is a full, clear, and exact description of the same.

My invention consists in a pump handle or lever adapted to straddle or encircle the pumpcase, whereby I am enabled to pivot thereto links connected with the pump-rod in a position to insure the vertical movement of the latter; in adaptingsaid lever to beoperated from either or both sides of the case, and in a novel arrangement of the links connecting the pump rod and lever.

In the accompanyingdrawings, Figure 1 represents a side elevation of a pump provided with my improved handle; Fig.2, a vertical central section of the same; Fig. 3, a face.

view of the links, showing their connection with the pump-rod and the handle or lever; Fig. 4, a side elevation ot'a pump case or head provided with my improved handle or lever adapted for operation from either or both sides of the pump.

Referring to the drawings, A represents the body or case of the pump, which maybe of any usual construction, provided with a cap, B, and acentral rod,G, to the lower part of which latter is secured the piston E. As indicated in Figs. 1,2, and 4, the case A is formed or provided with a projecting arm or bracket, A at one side, to which is pivoted the lever or han- (lle O, by means of a bolt or pin,P. As shown in Fig. 1, the lever or handle is forked in advance of the pivot P, forming two arms, 0, extending on oppositesidvs of thecase or body A, and to these arms are attached, by means of pivot pins or bolts q, thelower ends oflinks Q, the upper extremities of which are in turn pivoted to the upper extremity of the pumprod 0, the arrangement being such that as the handle or lever O is carried up and down the pump-rod is caused to fall and rise in a vertical line.

In some cases it is found desirable to render the pump capable ot'operation from either side,

ver are furnished with an eye or head, R, to receive a hand-lever, as indicated in Fig. 4.

As will be observed by reference to Figs. 1, 2, and 4, the links Q are attached to the arms 0 at a point to one side of the vertical plane of the pump-rod,.this arrangement preventing the arms 0 and the links Q from standing at any time at right angles, the movementof said arms and the length of the links being made to insure this result. By this arrangement of the several pivots the greatest possible leverage is obtained, and a true vertical movement of the rod insured.

Having thus described my invention, what 1 claim is-- In combination with the chamberA, having the lug A oast integral therewith, the handle P, pivoted to the lug A and having the arms 0, adapted to partially encircle the casing, the pump-rod O, and the connecting-links Q, pivoted out of a vertical line to the pump rod and to the arms 0, substantially as described.

J. A. MCMARTIN.

Witnesses:

CHARLES LEGGE, B0131. ARTHUR KELLOND.