US376696A

US376696A - Double-acting pump

Info

Publication number: US376696A
Authority: US
Publication date: 1888-01-17
Anticipated expiration: 1905-01-17

Description

2 Sheets-Sheet 1. D. WEBSTER.

DOUBLE ACTING PUMP. l

Patented Ja.n17, 1888.

(No Model.)

I .71mm w m ,AZZVV I N. PETERS, Plwlu-Lihagnpher. Washingiou. D. C.

2 Sheets-Sheet 2. i

(No Model.)

vD. WEBSTER. DOUBLE ACTI-NG PUMP.

No. 376,696. vPatented Jam-17, 1888.'

w" I, 11./ A

NITED STATES PATENT EEICEQ.A

DOUBLE-ACTINGPUMP.

SPECIFICATION forming part of Letters Patent No. 376,696, dated January 17, 1888. Application filed March 23,1887. vSerial No.7232.156. (No model.)

I citizen of the United States, residing at Brooklyn, in the county of Green and State of fis cousin, have invent-ed a new and useful Improvement in Double-Acting Pumps, of which the following,` is a specification.

My invention relates to an improvement in doubleacting pumps; and it consists in the peculiar construction and combination of de vices, that will be more fully set forth hereinafter, and particularly pointed out in the claim.

The object of my invention is to provide a single-cylinder and single-piston pump which is adapted to raise water at each stroke of the piston in eitherdireotion, and this object I accomplish by the devices illustrated in the accompanying drawings, in which- Figure l is a vertical sectional view of a pump embodying my improvements, showing the piston lowered. Fig. 2 is a similar View of the same, showing the piston raised. Fig. 3 is a detailed elevation ofthe piston. Fig. 4t is a vertical sectional view of the same, taken on the line x x of Fig. 3.

A represents the pumpcylinder, which is provided at its upper end with screw-threads B and at its lower end with screw-threads C. In one side ofthe cylinder, near the upper end. thereof, is a countersunk opening. D, which extends through the side of the cylinder land is provided with theinterior screw-threads, E.

F represents a @lack-valve, which is seated in the shoulder formed at the inner end of the opening D and is adapt-ed to open inwardly toward the interior of the cylinder.

G represents a hollow cylindrical sleeve, which is screwed into the opening jD and bears against the outer side of the rim of the valve, and forms the valveseat against which the valve closes. The said sleeve G is open both at its inner and at its outer ends.

II represents a cap which screwsonto the upper end of the cylinder A to close the same. In the center of the said cap is made-a vertical opening, I, and on the upper side of the cap, at the center thereof, is formeda packingbox, K.

L representsthe gland, which isadapted to screw into the packing-box, and the upper side of the gland is provided with a threaded opening, to which is screwed thelower end of a deliverylpipe, M.

N represents a cap which is adapted toscrew upon the lower end of the cylinder to close the same, andthe said bottom cap, N, is provided with a vertical central opening, O, having an inwardly-opening clack-valve, P.

It representsha hollow' cylindrical piston,

which is arrangedgin the cylinder A, and is provided at its lower end with the enlarged disk S and `has the screw-threads T at its upiper end. f

U represents a packing-ring, made of leather or other suitable material, which slips over the hollow piston and bears upon the upper side ofthe disk S and tits snugly against the inner side of the cylinder.Y l v V represents a hollow cylindrical sleeve,

which lits over the piston and bears uponl the upper side of the packing-ring U. A packing-ring, X, is slipped over the upper end of f the piston and bears upon the upper side of the sleeve V. ,Y

Y represents a hollow oase or cage, which is screwed to the upper end of the piston and bears upon t-he upper sidefof the packing-ring X. In the lower side ofthe cage is a puppetvalve, Z, which is seated on the upper end of thevpiston and is adapted to close the same. y f

inder-cap and through the packingboxl and gland, and enters the delivery-pipe M and is arranged concentrically therein, the said hollow piston rod or tube being of smaller diameter than the delivery-pipe. The upper end yof the piston rod or tubeis provided witha cage, C', having openings that communicate with the interior of the pipe M, and to the said cage is connected the lower end 0fapump-rod, D. f

The operation of my invention is as follows: The pump-cylinder is submerged, andthepiston is .reciprooated vertically in the cylinder by operating the'pump-rod D. On the downstrolre of the piston the valves P and A are Ioo closed, the valve Z is open to permit the water in the lower portion of the pumpcylinder below the piston to be forced upward through the piston into the piston cage or case, and from the latter through the hollow piston rod or tube B into the delivery-pipe M. A partial vacuum is created in the upper portion of the cylinder by the descending piston, and thereby the valve Fis caused to open inwardly, so as to permit the upper portion of the cylinder above the piston to be lled with water. On the ensuing upstroke of the piston the valves Z and F close and the valve A opens, thus causing the water in the upper portion of the cylinder to be forced into the piston cage or case Y and up through the same and the pipe or piston-rod B into the deliverypipe M, as before. As the piston moves upward in the cylinder, the partial vacuum is created in the lower portion of the cylinder, and thereby the valve Pis opened and water is admitted into the lower end of., the cylinder below the piston, ready to be forced upward on the ensuing downward stroke of the piston, as before described.

From the foregoing it will be readily under stood that water is raised at each stroke of the piston when the same is either raised or low'- ered.

. A double-acting pump thus constructed is extremely cheap and simple, is easily manufactured, is readily kept in repair, and is adapted to be used in driven wells and other contracted spaces.

Having thus described my invention, I claimw The herein-described piston for hollow-piston-rod pumps, comprising the cylinder R, having the flange or disk S at its lower end and screw-threaded at its upper end, the packingring U, resting on said flange, the cylindrical sleeve V, encircling the cylinder and resting on the packingring U, the packing ring X, placed around the upper end of the cylinder and resting on the upper end of the sleeve V, the cage Y, screwed onto the upper end of the cylinder and having the puppetvalve A in its side near its upper end and the arms Z2 depending from its top, the puppet-valve Z, seated on the upper end of the cylinder and limited in its play by the arlns Z2, and the hollow piston-rod secured centrallyin the top ofthe cage and leading therefrom, substantially as specified.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

DANIEL WEBSTER.

Vitnesses:

Anfris MCBRIDE, A. N. RANDALL.