US366351A - Combined supply and regulating valve for gas - Google Patents

Description

(No Model.)

H. STEWART.

COMBINED SUPPLY AND REGULATING VALVE FOR GAS.

No. 366,351. Patented July 12,1887.

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NITED STATES PATENT 'Frica.

HOMER STEWART, OF BEAVER FALLS, PENNSYLVANIA, ASSIGNOR OF THREE-FOURTHS TO MARY ELIZABETH FREDERICK, OF EAST LIVER- POOL, AND SAMUEL-M. LAWVRENOE, OF SALEM, OHIO.

COMBINED SUPPLY AND REGULATING VALVE FOR GAS.

SPECIFICATION forming part of Letters Patent No. 366,351,-dated July 12, 1887.

Application filed May 9, 1887. Serial No. 237,576. (No model.)

To a/TZ whom it may concern/.-

Be it known that I, HOMER STEWART, a citizen of the United States, residing at Beaver Falls, in the county of Beaver and State of Pennsylvania, have invented certain new and useful Improvements in Combined Supply and Regulating Valves for Gas; 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 appertains to make and use the same.

My invention relates to means for automatically regulating the flow and controlling the supply of gas or other fluid under pressure. While it has especial reference to natural gas, it is not limited thereto in its use, but may be applied to fluids generally-which are used under pressure.

It is well known that natural gas flowing from wells is subject to great variations in pressure, and that one of the principal annoyances connected with its use for mechanical and household or domestic purposes is that under the changes or fluctuations of pressure the burners are frequently robbed of their supply of gas and the flame extinguished, and when the gas again commences to flow the building becomes filled with a highlyinflammable fluid, which will ignite and explode the instant a flame is brought into contact with it.

By my invention a combined pressure-regulating and stop-off valve is provided, which will automatically control the pressure and the quantity of gas to the pipe leading to the place of consumption as long as the gas is flowing under sufflcientpressure to supply the burners, and when the pressure falls below said point the pressure-regulating valve will close and the supply-valve open to throw the pressure of the gas upon the back of said regulatingvalve as soon as the gas again commences to flow, and firmly hold the valve to its seat until it is opened by positive means.

The invention will be hereinafter described, and particularly pointed out in the claims.

In the accompanying drawing,which forms a part of this specification, the figure represents a side elevation of my device,partly in section, and in which- A represents the supply-pipe leading from the main, (not shown,) and B the distributingpipe leading to any suitable place of consumption. The supply'pipe is provided with a valve, 0, of any well-known construction, and communicates with the ease or body of a pressure-regulating and stop-oft valve, D, above the plane of the valve E, (when resting upon its seat F.) The valve E fills or nearly fills the bore of the valve case, and to the inner side of the valve is attached a packing, G, of any suitable material, to effect a light joint between the valve and its seat. The stem It extends through one end of the valve-ease, is packed in a stuffingbox, I, to prevent leakage of gas, and is provided with an elongated slot, K, at its outer end, through which projects a lever, L, provided with a handle, M. The opposite end of the lever is attached to the stem N of the valve 0, and is supported in a bracket, 0, which forms a fulcrum for said lever. The lever L is graduated between the fulcrum and the valve-stem H, as shown at P, and is provided with a weight, Q, for regulating the degree of the pressure of the gas flowing to the burners.

To relieve the upper side of the valve E of pressure of gas entrapped between it and the end of the valve-case, and prevent the compression of said gas to resist its further ascent under increased pressure from the main, :1 peteock, R, isinserted in the end of the valve-ease.

The operation is as follows: The pressure under which it is desired to burn the gas having been determined upon, the weight Q is properly set and the regulating-valve E raised positively above the plane of the inlet-port S by means of the lever L, and the supply-valve O proportionally closed, the petcock R is opened, and the gas above the valve allowed to escape. The pressure of the flowing gas, operating upon the under side of the valve E, will now hold it in said position as long as the gas continues to flow at the predetermined pressure. Should the pressure increase, the valve E will rise higher, and, by means of the lever L, correspondingly depress the valvestem N and cut off the supply from the main. Should the pressure fall, the valve E will dc scend and in like manner reverse the action upon the lever L, opening the valve 0 and in IOC creasing the supply to the valve case D. As long as the gas flows at the predetermined pressure, the valve E will be supported by the gas; but should-the pressure fall below that point, by fluctuations of the gas in the well,or by the gas being cut offin the main, the valve E will descend to its seat,while the valve 0 will be opened to its full extent, and the gas, again flowing into the case D, will hold the valve E to its seat firmly until opened positively.

Having thus fully described my invention, what'I claim is- 1. A pressure-regulating valve controlling a distributing-pipe, in combination with a valve in a supply-pipe and suitable connections between said valves, substantially as described.

2. A supply-pipe and a distributing-pipe, in combination with a valve in the supply-pipe, a regulating-valve between the supply-pipe and-a distributing-pipe, and a lever connecting said valves, substantially as described. 7

3. A regulating-valve having a valve-seat below the plane ofthe inlet-orifice and a valve of about the same diameter as the bore of the valve-case, in combination with a petcock in tially as. described.

In testimony whereof I affix my signature in a presence of two witnesses.

HOMER. STEWART.

Witnesses:

- T. GHESNUT,

G. L. EBERHART.

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