US856215A - Pump. - Google Patents

Description

No, 856,215. PATENTED JUNE 11, 1907. J. BERGSTROM & 0. A. WAHLEEN.

PUMP.

APPLICATION FILED SEPT. 27, 1906.

rs: NORRIS PETERS C0,, WASHINGTON, n. c.

- the improved pump in front elevation.

UNITED STATES PATENT FFTQF.

PUMP.

Specification of Letters Patent.

Patented June 1 1, 1907.

Application filed September 27,1906. Serial No. 336,442.

To (ZZZ whom, it may concern.-

Be it known that we, JOHN BERGSTROM and CARL A. WAHLEEN, citizens of the United States, residing at WVashburn, in the county of Bayfleld and State of Wisconsin, have invented certain new and useful Improvements in Pumps and we 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 appertains to make and use the same.

Our invention has for its object to provide an improved pump, and to this end it consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

The improved pump is illustrated in the accompanying drawings, wherein like characters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 shpws 1g. 2 shows the pump in side elevation. Fig. 3 is a vertical section taken on the line 00 r of Fig. 2; and Fig. 4 is a vertical section taken through the pump on the line 90" 90 of Fig. 3.

The body of the pump is in the form of a cylindrical casing having, as shown, a detachable face plate or head 2 secured thereto by machine screws 3. This casing 1 is adapted to be secured to a wall or other support by means of screws 4, shown as passed through. perforated lugs 5 on the peripheral portion thereof. A water supply pipe 6 leads from a suitable source of water supply and opens di rectly into a port 7 formed in the bottom of the casing 1. This port 7 is normally closed by a check valve 8, preferably of the flapper type, which readily opens to permit an upward flow of the water from said pipe into said casing, but closes to prevent a return or reverse flow.

Within the casing 1 is a segmental flange 9 that is concentric to the axis of said casing, and is spaced apart from the lower peripheral portion thereof, so as to form a segmental piston seat 10 which, as shown, and preferably, is rectangular in cross section. The said flange 9 preferably extends through about 180 degrees. close to but on the opposite sides of the port 7, are check valves 11 which open up to permit the water to flow in either direction from the central chamber 10 formed between said valves 11 into the piston seats proper.

'Working in the two extremities of the seg- In the piston seat 10,

mental piston seat 10, or, in other words, within the two piston seats proper, are segmental pistons 12, which pistons are connected by a segmental piston stem 13 carried by an arm 14:, which arm is secured to and carried by a short rock shaft 15 journaled in the back plate and in the face plate of the casing 1. To the forwardly projecting end of the rock shaft 15 is secured an operating lever or pump handle 16. The pistons 12 are open at their inner portions and are preferably formed with slots 15 that extend nearly to their inner extremities. The ex treme inner ends of the said pistons, how ever, are provided with check valves 17 preferably of the flapper type, and which check valves open up when the pistons are moved toward the respective check valves 11, but close when the said pistons are moved in reverse directions. A valved faucet 18 opens from the casing 1 through the face plate 2 thereof, from a point above the segmental partition 9. Otherwise stated, the said faucet or outlet pipe opens from the central or main compartment of the casing 1.

The action of the improved pump, briefly stated, is as follows: When one of the pistons is moved toward its cooperating check valve 11, the other piston is moved away from its cooperating check valve. When the piston is moved away from its cooperating checkvalve, water will be drawn upward through the pipe 6, through the port 7, check valve 8, chamber 10 and check valve 11, and will fill the corresponding piston seat 10. When the said piston is then moved toward the cooperating check valve 11, its check valve 17 will open and permit the said check valve 17 to pass to a position close to the said cooperating check valve 11. Then, when the said piston is again moved away from the cooperatlng check valve 11, its check valve 17 will be closed, so that not only will the water be drawn into the piston seat below the same, but the water above the said check valve will be forced upward and into the mainchamber of the casing, and the said casing previously having been filled with water, the water will be caused to flow out through the faucet 18, the valve of the said faucet, of course, then being open. It will thus be seen that under both strokes or movements of the pump handle or lever 16, water will be drawn into the casing and forced out thereof by the two reversely acting pistons, so that a continuous flow of water is produced by the pump. The pum has large capacity in proportlon to size an power required to operate the same. In its action it will be noiseless and, furthermore, is of simple construction 5 and of comparatively small cost.

What I claim is:

In a pump, the combination with a casing having a segmental piston seat 10, of a valved water inlet passage opening into the inter- IO mediate portion of said piston seat, a water outlet passage opening from the main chamber of said casing, reversely acting check valves in said piston seat on the opposite sides of said inlet passage, segmental pistons 15 working in the opposite extremities of said piston seat and provided with slots 15*, check valves in said pistons, a rock shaft journaled in the said casing and provided at its outer end with a cooperating lever, and an arm secured to said rock shaft within said 20 casing, and having reversely extended stems connected to said two pistons, substantially as described.

In testimony whereof we afliX our signature in presence of two witnesses.

JOHN BERGSTROM. CARL A. VVAHLEEN. Witnesses:

L. N. CLAUsEN, T. O. OSCAR.

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