US375635A - Vent-stopper for pumps - Google Patents

Description

(No Model.)

R. G. JOHNSTON 8v G.. A. BUFFINGTO-N.

VENT STOPPER POB. PUMPS.

. Patented Dec. 27, 1887.

Wl TJVESSES Attorney N. PETeRs, mmm-umgwmw. wnshanmun, u c.

use the same, reference being had to the ac- UNITED STATES PATENT OEEICE.

ROBERT G. JOHNSTON AND GEORGE A. BUFFINGTON, OF ORCHARD, NEBRASKA.

vENT-sTOPPl-:R FOR PUMPS.

SLPECIFICATION forming part of Letters Patent No. 375,635, dated December 27, 1887.

Application led July 21, 188'?. Serial No. 244,910. (No model.) v

To afZZ whom it may concern.-

Be it known that we, ROBERT G. JOHNSTON and GEORGE A. B-UEEINGTON, citizens of the United States of America, residing at Orchard, in the county lof Antelope and State of Nebraska, have invented certain new and useful Improvements in Vent-Stoppers for 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 companying drawings, and to letters or figures of reference marked thereon, which form a part of this specification. l

Our invention relates to certain new and useful improvements in vent Stoppers for pumps, the object of our invention being to provide a cheap, simple, and effective means whereby the water can be let out of the pumpstock, so as to prevent the pipe Or stock bursting, which would be occasioned by the water freezing therein, our improvement being adapted to be applied to metal tubes which are used for pumpstocks, or on pumpstocks of ordinary construction.

In theacoompanying drawings, which illustrate our invention, Figure l is a view showing our improved vent-stopper applied to a pump of ordinary construction. Fig. 2 is a longitudinal sectional View, and Fig. 3 is a transverse sectional View taken through the line x .fr of Fig. 2.

A refers to the pump, which is suitably connected to the pumpstock or welltube B, which is usually a metal tube. The pump pipe or stock A may have pivoted thereto, as shown in Fig. l, a bell-crank lever, a, which is adapted to be turned upon its pivot by the foot of the person who operates the pump. This bell-crank lever may be provided with an automatic catch, or a catch of any suitable constructionas a pin for holding the same in positionso as to maintain the ventlstopper in an elevated position. The opposite end of the bell-crank lever a is connected to the rod or wire (rust-proof) C. Said lever becomes a self-locker by the end to which the wireis attached passing a little past the perpendicular when raised.

D refers to a metallic plate, which is curved centrally, so as to embrace a portion ofthe well-tube B, said plate .being provided with side anges, d d, which are perforated at suitable intervals for the reception of metallic straps E, F, and G, which vare bolted to the plate D, so as maintain said plate in position upon the tube or pump-pipe B. The tube or pump stock or pipe B has at a suitable distance from the pump, below the freezing-point 6o or just above the cylinder, a vent, c. The strap is provided centrally with a projecting portion, e, into which passes the rod C, said rod carrying beneath the strap E a washer, f, against which abuts a spiral spring, H, the opposite end of said spring abutting against the upper surface of the wedge-shaped sliding valve I. The straps F and G each serve as guides for the edgeshaped sliding valve I, and the projecting portion of these straps ta- 7o per or are wedge-shaped, so as to conform with the wedge-shaped valve. The wedge-shaped valve l. is provided on its surface adjacent to the pump stock or tube B with a packing, t', which is suitably secured thereto. Saidvalve is of such a length that the upward movement of the rod G cannot displace the same from the guides. The lower end of the valve I is of much less thickness than the upper portion, the inner side thereof being cut away or re- 8o moved, so that when the sliding valve is elevated the vent will be uncovered. The vent is located near the lower valve in the pump tube or stock. v

We are aware that prior to our invention it has been proposed to construct vent-stoppers having a sliding gate which is connected to a rod, so that when said gate is elevated by the rod the vent will be opened; also, that it has been proposed to construct vent-Stoppers 9o with spiral spring for holding thegate or slide down over the vent in the pump, and we do not claim such construction as our invention; but

What we claim as new, and desire to secure by Letters Patent, is-

In a Vent-stopper forpnmptubes, the plate In testimony whereof We afx our signatures 1o D, having side anges, straps E, F, and G, foi1 l in presence of two Witnesses. holding said plate in position upon the pump pipe or stock said straps having oentraliy- ROBERT G. JOHNSTON. projecting portions, the projecting portions GEORGE A. BUFFINGTON. of the straps F and G being tapered, and a.

wedge-shaped sliding valve and an operating- Vitnesses:

rod,substantiallyas shown, and for the purpose JOHN G. CLoSSoN,

set forth. i W. N. CLossoN.

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