US44790A - Improvement in force-pumps - Google Patents

Improvement in force-pumps Download PDF


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US44790A US44790DA US44790A US 44790 A US44790 A US 44790A US 44790D A US44790D A US 44790DA US 44790 A US44790 A US 44790A
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    • F04B7/00Piston machines or pumps characterised by having positively-driven valving
    • F04B7/04Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports





Specification forming part of Letters Patent No. 41,790, dated October 25, 1864.

To all whom it may concern.-

Beit known that I, JOSEPH DE LONG, of Upper Sandusky, Wyandot county, State of of Ohio, have invented a new and Improved Force-Pump; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l is a side elevation of the iin proved pump arranged for use. Fig. 2 is a diametrical section of the pump-cylinder and valvechamber on the sideof it. Fig. 3 is a horizontal section taken centrally through the cylinder and valve-chamber.

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

This invention relates to improvements in that class of pumps which are submerged in the water when in use.

The nature of my invention consists in providing the pump-cylinder with induction-passages, arranged at an intermediate point between its ends, and in combining with such a cylinder a valveless piston, and a doubleacting valve working in a side chamber, as will be hereinafter described.

To enable others skilled in the art to make and use -my invention, I will describe its construction and operation.

In the accompanying drawings, A represents the pump-cylinder, provided with two heads, B B, one of which is solid, while the other is tapped for receiving the stuffing box a, through which the lower section of the piston-rod B passes. At the middle of the length ofthe cylinder a number of holes, b, are made through it for the introduction of water into said cylinder, as will be hereinafter further explained.

Near the ends of the cylinder A are two eduction-passages, c c', which form communications between this cylinder and a side chamber or box, C, as clearly shown in Fig. 2. This side chamber, C, is furnished with a valve, d, having a double face and working between two seats, e e', so as to alternately cut ott' and open a communication between the cylinderA, above the piston A', and the eduction-orifice D, and between the cylinder, below the piston, and said eduction-orilce. The valve d is cast with tlanges d projecting from it for the purpose of centering and keeping it in its proper relative position to the seats e e.

The perforated cylinder A, solid piston A',

and the valved chamber C, arranged as I have just described, constitute the main features of my improved pump.

The manner of arranging and opera-ting the improved pump is as follows: The cylinder A is bolted to a shaft, which is carried down to and rests upon the botttom ofthe well, and the valve-box O is bolted to the cylinder A, as shown in Figs. l and 2. The orice D, through which the water escapes from the valve-box (l, is provided with a pipe, E, leading to the top ofthe well, which pipe isshown in Fig. 1, bent over so as to form a dischargenozzle. l

The piston-rod B may be made up of sections, united together by right and left screwcouplings. This rod extends upward through guides g g, and projects above the platform at the top ofthe well a sufficient distance to receive a pump-handle, G, which may be applied to said rod in the manner shown in Fig. l, or in any other suitable manner.

By reference to Fig. 2, it will be seen that when the piston A is drawn up a vacuum will be formed below the openings b, in consequence of the valve d closing the lower passage, c; but when the piston rises above the openings b the water will rush into the cylinder and fill it. When the piston descends, a vacuum is formed above it, in consequence of the valve d closing the upper passage, c, which vacuum is instantly filled with water when the piston descends below the passages b. Simultaneously with the iilling of the cylinder A, the piston forces the water below the perforations b out through passage c. As the piston is again elevated, the water above it will be forced through the passage c and out through pipe E. Thus atevery stroke of the piston the water in the cylinder is forced out through pipe E, and the cylinder again supplied through the induction-passages b.

lt will be seen from the foregoing description and the accompanying drawings that my pump requires but one valve, and that the puppet-valve which I use answers the purpose of two ball or two iiap valves. By using one valve much fitting is obviated, and in getting at the valve or its seats but a single screw-cap has to be removed. My construction is cheap and very easily manipulated.

I am aware that a pump with two or more valves and a single piston working` in a eylin` der which is perforated midway of its length is shown in the application of J. M. Reeder, rejected July 20, 1860; also in the rejected application of J. K. Andrews, dated November 17, 1860. Therefore I do not claim, broadly, such a pump, but,

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

1. The arrangement of the single doublel acting valve d with the intermediately-perforated cylinder A, solid piston A', and valvecliamber G, the whole constructed and operating substantially in the manner described.

2. The arrangement of the removable screwseat e, constructed with a passage through it, with puppet-valve d d and the perforated cylinder A, substantially in the manner and for the purpose described.




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