US337496A - Piston for deep-well pumps - Google Patents

Description

(No Model.) 7

G. HOD$0N.

PISTON FOR DEEP WELL PUMPS.

No. 337,495. Patented Mar. 9, 1886.

OI Q I v Q p H PATENT FFICE.

GEORGE HODSON, OF BRADFORD, PENNSYLVANIA.

' PISTON FOR DEEP-WELL PUMPS.

5PECIFZCATION forming part of Letters Patent No. 337,496, dated March 9, 1886.

Application filed October 10, 1883. Serial No. 108,765. (No model.)

To aZZ whom it may concern.-

Be it known that I, GEORGE HoDsoN, a citizen of the United States, residing at Bradford, in the county of McKean and State of Pennsylvania, have invented certain new and useful Improvements in Pistons for Deep-Well Pumps, of which the following isa specification, reference being had therein to the accompanying drawings.

The lower or standing valve in Artesian wells often becomes clogged with sand, and the sand rising'with the liquid becomes embedded in the leather of the cups which are used in the wor-kiiig-valve,and soon cuts out the leather and scores channels in the working-barrel. My invention is designed to obviate these difficulties by preventing the saudfrom rising above the lower valve; and it consists in providing the lower valves with sieves, which are effectual in keeping back the sand, but

7 will soon become clogged therewith and prevent any passage of the liquid, and in combining with said sieves or strainers a number of shot normally resting thereon, the attrition of said shot as they rise and fall serving to prevent the clogging of said strainers, substantially as hereinafter set forth.

In the drawings, Figure 1 is a View in elevation of my improved valve. Fig. 2 is a longitudinal sectional view. Fig. 3 is a View, partly in section, of the cage. Figs. 4, 5, and 6 are views of the sieves.

The valve is made in three parts, of which the upper part, A, is the cage, and will be hereinafter more fully described. The three parts are fastened together with screw-threads, as shown in Fig. 2 of the drawings. The packing F surrounds the lower part, 0, and is generally made of leather rings. It is intended to fit tightly into the lower part of the working-barrel. The packing F is supported upon the shoulder 0 and is forced down upon it by the section B. The lower end of the portion 0 is pierced with the holes 0, which form the first strainer, a second strainer, G, made of wire gauze, interposed between the sections B and O. A. second sieve, H, is placed in the upper portion of the section 13 immediately below the valve-seat D. In the chambers formed between the sieves H and Gand the sieve G and the perforated bottom of section Oh Itplace about twelve (12) common leaden S O I.

The cage in section A differs from ordinarv cages in being made solid and then perforated with the holes a. This prevents any particles larger than said holes a from gettinginside to interfere with the ball-valve E. This cage is made in two formsone with the pin I, as shown in Fig. 2, and the other with the interior thread, K, as shown in Fig. 3-the first or Fig. 2 being adapted more particularly for the upper valve, and the form shown in Fig. 3 being better suited for the lower or standing valve. at the top, and it may be perforated or not with holes at the sides for the passage of liquid. This portion L forms a basket or rivetcatcher, so as to intercept any broken rivets which may drop from a sucker-rod and pre vent their falling into the valve.

In case the basket L is not perforated upon its sides, it should be made small enough to allow free passage of the liquid around it.

The parts A L are in one piece, as shown.

What I claim as my invention is-- 1. The combination of a strainer in a pumppiston with a number of shot normally resting thereon, the attrition of said shot as they rise and fall serving to prevent the clogging of said strainer, substantially as set forth.

2. The piston in three sections, the upper one provided with the perforated parts A. L, in combination with the valve proper, E, the strainers c G H, and the shot which rest 011 two of said strainers, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE HODSON.

Witnesses:

F. W. PERKINS, J AMES 0. Boilers.

The upper portion, L, is made open-

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