US127768A - Improvement in stop-valves for water-pipes - Google Patents

Description

UNITED STATES PATENT OFFICE.

y JOSEPH L. HEWES, OF NEWARK, NEW JERSEY.

IMPROVEMENT IN STOP-VALVES FOR WATER-PIPES.

Specication forming part of Letters Patent No. 127,768, dated June 11, 1872.

SrEcIFIcATIoN.

i management of water-works, especially, are

familiar with the difficulty experienced whenever it becomes necessary to shut of a line of pipes for repairs, or for the purpose of making connections, by the failure of theV stops to close with any degree of tightness, rendering it necessary oftentimes to do the proposed work with a stream of water running. This occurs usually, not through any defective workmanship in thegstop, but because of obstructions which prevent the gate from being closed. Through the carelessness of work.

men and other causes a line of pipes, in being laid, is liable to collect a considerable quantity of sand, gravel, and other sedimentary deposit, which the action of a current of water sweeps' along and deposits in the depression, or that part of the chamber in which the valve works, lying below the lower surface of the waterway. This is inevitable, and when once lodged there no amount of power applied to the valve will force it to find its seat with any degree of accuracy. The whole stop is strained or broken in the'attempt to close the valve, and it is condemned as worthless.

The nature of my invention consists in so forming and arranging the lower end of the valve, the water-ways, and passage beneath and around the valve, as to secure the passage of a concentrated current of Water through the sediment collected, as before set forth.

To enable others skilled in the art to use my invention, I will proceed to describe its coustruction and operation. t

I construct the shell or case of the stop according to any of the forms in use among makers of such work, and the valve or gate may be substantially of any of the forms here tofore adopted. The form of neither of these yis essential. Neither is the mode of operating the valve.

Figure 1 of the drawing represents a sectional end view, vand Fig. 2 a longitudinal section of my improved water-stop.

I construct the gate or valve B with one side or face somewhat longer than the other, so that when the valve has been so far depressed that the longer face entirely covers itsy corresponding opening orwater-way the other or opposite face will not quite cover its waterway, thus leaving a passage for the water under and by the shorter face. The same object may be accomplished by raising the bottom of the water-way O on one side of the valve slightly above that on the" other, and again by extending the center of the valve below the faces thereof.

I do not confine myself to the use of either of these means, and only particularly describe that which seems best adapted to effect the A desired object.

From the chamber in which the valve works, and immediately under the valve, I construct a passage, A, descending and passing outside of the shell or case and entering the bottom of the water-way beyond the longer face of the valve, forming a communication from the water on one side of the valve to the recess or depression under the valve, in which depression, as before set forth, the lodgment of sediment occurs.

The operation of the stop is as follows: The valve being opened, the pipe lled with water, and the bottom of the chamber receiving the sediment carried along by the current, we Wish to shut 0E the water by lowering the valve, When the water-way adjacent to the long side of the valve is covered that next to the short side still presents some opening through which lthe Water flows. It rushes through the contracted opening and through the only course for it-the passage A-and into the water-way on the opposite side of the valve. Whichever direction the water -has the result is the same in either case, removing, by the force of the current, anything which may have lodged be low the valve, leaving for it a clear and unobstructed course. The form or shape of the passage A is immaterial, only requiring to be so t constructed and arranged as to pass through sage extending from the chamber immediately belonT the valve, passing outside of the shell or case of the stop, and communicatingwith the main Water-Way beyond the Valve, substantially in the manner and for the purpose described.

3. The combination of a valve, B, and passage A with the shell or case of the stop and its Water-Ways, the Whole arranged substantially in the manner and for the purpose described.

JOSEPH L. HEWES. Witnesses:

J oHN M. PHILLIPS, G. H. BAILEY.

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