US35465A - Improvement in pumps - Google Patents

Description

A UNITED STATES PATENT OFFICE.

IMPROVEMENT IN PUMPS.

Specification forming part of Letters Patent No. 35,465, dated June 3, 1862.

vention taken in'the line .70 m, Fig. 2. Fig. 2

is a plan or top view of the same. Fig. 3 is a section of the same taken in the line y y, Fig.

2; Fig. 4, a detached perspective view of the socket which is placed on the pump-handle.

Similar letters of reference indicate corresponding parts in the several figures.

This invention consists in a check or retaining valve arranged substantially as hereinafter fully shown and describedto admit of the water escaping at the termination of the working of the pump in order to prevent difficulty from freezing.

The invention also consists in a novel way of attaching the handle of the pump to the plunger or piston shaft, as hereinafter described, whereby the relative positionof the handle with the plunger or piston shaft may be regulated to suit the operator, as described.

To enable those skilled in the art to fully understand and construct my invention, I will proceed to describe it.

A represents the body or chamber of the pump, whichis of sectorjorm in its transverse section, as shown clearly in Fig. 1, and may be of any suitable or desired length. To the upper end of the body or chamber A there is attached an eduction-pipe, B, and to the lower end there is attached an induction-pipe, G, the latter having a check or retaining walve, D, over its orifice. This valve D may be of the usual flap kind, and it is within a chamber, E, atthe lower part of the bodyA of the pump, said chamber communicating with thebody A and having a cap, F, screwed on its outer end, by removing which the valve D may be rendered accessible for repairs when neces-' sary, as will be seen by referring to Fig. 1.

The front part of the valve D is provided with a projection, a, which extends a short distance within the body A of the pump and projects over a groove or channel, b, made longitudinally init, as also shown in Fig. 1.

G is a shaft, which is fitted in the upper part of the body A of the pump at its angle which forms the center of the sweep of the curved orfront side, a, of the same. This shaft G is provided with a radial flange, H, which forms the plunger or piston of the pump, and its outer edge works in contact with the inner surface, 0, while its sides work in contact with the innersurfaces of the ends d (1 of the body A. The plunger or piston H is provided with a valve, I, of the ordinary flap kind, which opens upward, and a guard or stop, J, is attached to the plunger or piston to prevent the valve I opening beyond a certain distance. The orifice or opening in the plunger or piston H is beveled at its lower side in order to form a V'shaped edge at the outer end of the plunger, as shown at a in Fig. 1. The shaft G extends through the ends dd of the body A of the pump, and to one end of said shaft the handle K is attached, as follows: Thehandie is provided at its inner end with a circular loop or eye, 6, which fits snugly on the shaft G, and on the handle there is placed loosely a collar, L, the outer end, f, of which is of semicircular form, so as to fit against the shaft G.

This semicircular end f of the collar L is grooved, as shown at 9, so that the back part of the eye 6 may fit into it, and the inner side of the eye e at its back part and the frontside of the collar L be flush with each other, so that both may be in contact with shaft G. The face or concave side of the end f of the collar L is provided at each side'of the groove 9 with projecting teeth h, which fit into notches i in the periphery of the shaft G, and the teeth h are held in said notches by means of a nut, M, which works on a screw-thread, j, on the handle K. The teeth h, it will be seen, in consequence of fitting into the notches i, prevent the eye 6 of handle K from turning on the shaft G, and by'slightly unscrewing the nut M, so thatthe teeth of the collar may be withdrawn from the notches in the shaft, the position of the handle on the shaft G may be varied, as desired.

The pump is operated by moving the handle K up and down, thereby giving motion to the plunger or piston H. As said piston descends or moves downward in the body A of the pump, the water within the latter passes through the plunger, its valve I opening, and as said piston rises the valve I closes and the water in A is forced upward out from A and through the eduction-pipe B. \Vhen the piston H rises, the valve D opens, a suction being produced below the piston, and the water passes up through the induction-pipe 0 into A, the valve D closing as the piston descends. At the termination of the work the operator depresses or lowers the piston H sufiiciently to allow the V-shaped edge a of the piston to pass underneath the projection a of valve D and raise said valve, the water in A thereby being allowed to escape through the channel I) and pass down the induction-pipe 0. Thus by this simple arrangement the pump is prevented from freezing up in winter;

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

1. Having the piston H provided with a V- shaped edge, a at the outer part of its valveseat when used in connection with the groove or channel b in the chamber A, and the projection a of the check-valve D arranged, as shown, to admit of the escape of water from the pump by the depressing or forcing down of the piston, as and for the purpose herein set forth.

2. Connecting or securing the handle K to the shaft G by means of the eye e, collar L, provided with the teeth 71, the notches i in shaft G, and the nut M, all arranged as shown, whereby the position of the handle K may be changed or varied on the shaft as circnm stances may require.

ALVAN MUNSON.

Witnesses:

JNo. H. STEELE, JOHN R. MILLER.

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