US340910A - Double-acting pump - Google Patents

Description

(No Model.)

J FEERICK.

DOUBLE ACTING PUMP.

No. 340,910. Patented Apr. 27, 1886.

Tim 1755525- 6/ 0k @Mz UNITED STATES PATENT OFFICE.

JAMES FEERICK, OF NASHVILLE, TENNESSEE.

DOUBLE-ACTING PUMP.

SPECIFICATION forming part of Letters Patent No. 3&O,9l0, dated April 27, 1886.

Application filed March 12, 1856. Serial No. 194,936. (No model.)

To all whom it "may concern.-

Be it known that I, JAMES FEERICK, of Nashville, in the county of Davidson and State of Tennessee, have invented certain new and useful Improvements in Double-Acting Pumps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specification.

My invention relates to an improvement in double-acting pumps; and it consists in the combination of the inclosing case or frame, the cylinder, the piston, the double-acting valves, a chamber located below the cylinder, and in connection with which both of the valves alternately operate, and the Water-passages, as will be more fully described hereinafter.

The object of my invention is tolocate both of the valves at the bottom of the cylinder, so as to produce a double-acting force-pump, in which the parts are combined in such a manner as to take up the least possible amount of room, and thus adapt the pump to be used in driven and bored wells, where a double-acting pump cannot ordinarily be used.

Figure 1 is a vertical section of a pump embodying my invention. Fig. 2 is a horizontal section taken through the cylinder just above the tops of the valves. Figs. 8 and 4: are detail views.

A represents the pump, and which is here shown as made in founseparatc and distinct pieces, which are bolted and screwed together in any way that may be preferred. The cylinder B is placed in the center of the frame-work, and the suction-pipe G and the force-pipe l) are connected to opposite ends of the frame-work in the usual manner. The water rises through the pipe 0, up through the vertical passage D, to the vertically moving double ended valve F. This passage terminates at the partition G, which extends across between the two valves F and H. Below the lower end of the cylinder, but separated therefrom by the two water-passages D I, is the water-chamber J, which is common to both of the valves F and H, and which communicates with the waoer-passage L. Both of the valves F and H are double-acting valves, and operate to alternately open and close against the bottom of the cylinder and the top of the water-chamber J;

hen the piston l begins to rise in the cylinder B, the water rises through the lift-pipe G and passage D and lifts the valve F, so as to open the bottom of the cylinder and close the top of the chamber J, and then the water passes directly into the cylinder. At the same time that the valve F lifts upward,so as to close the top of the chamber J, the valve H also lifts upward, from the effect of the suction caused by the rising movement of the piston, and closes its port in the bottom of the cylinder. YVhen the piston begins to descend, the valves F and H both drop. The one F closes its port in the bottom of the cylinder and opens a corresponding one into the top of the chamber J. The valve H drops, so as to open its port in the bottom of the cylinder, and

closes its port in the top of the water-cham ber J. The suction in the top of cylinder B, above the piston, then extends through the water-passage L down into the chamber J, and all of the water that passes through the passage D and past valve F into chamber J is drawn through the passage L into the top of the cylinder. Asthe piston descends, the water in its lower portion is forced past the valve H, through the water-passage I, to the delivery-point. The valve H being closed upon the top of the water-chamber J during the descent of the piston, none of the water which is being forced from the cylinder can pass into the chamber J. By the time the piston N has reached the bottom of the cylinder B the upper portion has been filled with water from the chamber J through the passage L. \Vhen this piston again begins to rise, all of the water in the top portion of the cylinder is forced through the passage L back into the chamber J and past the valve H, which is closing the port in the bottom of the cylinder, out into the water-passage I, and thence to the point of delivery. It will thus be seen that the water-chamber J is common to both of the valves F H, and to all three of the water-passages D I L.

The valves being constructed and arranged to operate as here shown, they are placed together and made to occupy the least possible space, and that without in any way enlarging the lower portion of the body of the fratne A, as is generally the case. The consequence is, the frame A is of the same size from end to end, and hence can be made to operate in any bored or driven well into which the pump can be inserted.

Not only a very compact but a cheap, simple, and effective pump is produced by the construction above shown and described.

Having thus described my invention, I claim- In a double-acting pump, the combination of the piston, the cylinder provided with the two water-passages I L, the two doubleaeting J AS. FEERIOK.

Vitnesses:

J OHN O. DOYLE, H. BAKER.

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