US645034A - Lift and force pump. - Google Patents

Description

Patented Mar. 6, I900. S. H. KERFOOT.

LIFT AND FORCE PUMP.

(Application filed Oct. 14, 1898.\

(No Model.)

W WUI llE STATES A ATENT ()FFICE.

SAMUEL I-I. KERFOOT, OF DES MOINES, IOWA, ASSIGNOR, BY MESNE AS- SIGNMENTS, TO KATHERINE KERFOOT, OFSAME PLACE, AND ELENOR S. GUMP, OF CHICAGO, ILLINOIS.

LIFT AND FORCE PUMP.

SPECIFICATION forming part of Letters Patent No. 645,034, dated March 6 1900.

Application. filed October 14:, 1898.

To aZZ whom, it may concern:

Be it known that I, SAMUEL H. KERFOOT, a citizen of the United States, residing at Des Moines, in the county of Polk and State of Iowa, have invented a new and useful Lift and Force Pump, of which the following is a specification.

My object is to improve the construction and increase the efficiency of double-action force-pumps as required to elevate a continuous stream and force it a greater distance with less power and labor than heretofore.

My invention consists in the arrangement and combination of elements whereby the initial end of the discharge-pipe is located within and surrounded by the mouth of the air chamber in order that the air-pressure may be exerted around the vertical plane of the Water-column in the discharge-pipe as contradistinguished from the exertion of the air-pressure at the point laterally removed and distant from the water-column in the discharge-pipe.

My invention consists, further, in the arrangement and combination of an air-chamber and air-conducting tube and water-discharge pipe with a water-chamber and cylinders and pistons, as hereinafter set forth, pointed out in my claim, and illustrated in the accompanying drawing, in which The letter A designates a water-chamber.

B and B are cylinders connected with the Water-chamber, and O and O are opposing pistons fixed to a rod D, that is designed to be reciprocated in the cylinders as required to lift water into the water-chamber and also force it upward therefrom.

F is an air-chamber located at some space above the water-chamber A and fixed thereto by means of an open-ended coupling-tube H, that has external screws on its ends fitted in correspondingly-screw-threaded apertures in the said chambers, as required to rigidly connect the chambers.

J is an air-tube fixed in the top of the airchamber F to supply air thereto.

K is a discharge-pipe that has an internal screw-thread at its lower end, and L is an Serial No. 693,573. (No model.)

open-ended extension that has an external screw at its top fitted and fixed in the lower end of the pipe K, that also has an external screw-thread at its lower end fitted and fixed into a screw-threaded aperture in the top of the air-chamber H in such a manner that the extension L will project down through the open-ended coupling-tube I-I into the waterchamber A to conduct water up into the discharge-pipe K, While at the same time air in the air-chamber F .Will press upon water in the coupling-tube H and the water-chamber A as required to serve as a cushion and to aid in maintaining a steady pressure and steady continuous flow of water through the discharge-pipe K, while the two pistons are reciprocated in their respective cylinders.

In the practical operation of my invention a steady stream and larger volume of water can be forced through a greater length of tubing or hose of a given diameter and a greater quantity of water thrown in a solid stream a greater distance and with less applied power than any other pump of the same class.

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

In a pump the combination of the waterchamber A of materially-greater transverse than Vertical dimension,the cylinderB located below and communicating with one end portion of the. bottom of the Water-chamber A, the cylinder B located above and communicating with one end portion of the top of the water-chamber in alinement with the cylinder B, the adjacent end portions of the cylinders being spaced apart a distance at least equal to the depth of the water-chamber, pistons O, 0 mounted for conjunctive reciprocation in the cylinders, a pipe H mounted in, communicating with and rising from the opposite end portion of the top of the waterchamber and open at both ends, an air-chamber F, of materially-greater dimension transversely than vertically,mounted on the upper end of the pipe H and communicating therenicating with and rising from the end. portion spaced apart from the Walls of the pipe H and Y of the top of the air-chamber adjacent the Water-chamber. cylinder B and closed at its upper end, and

a discharge-pipe traversing the air-chamber SAMUEL KERFOOT' 5 F and pipe H and extending at its lower end Witnesses:

into the Water-chamber A, the said lower end J AS. BARELS,

of the discharge-pipe being entirely free and THOMAS G. ORWIG'.

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