US1570881A - Gas regulator - Google Patents

Description

GAS REGULATon 4Filed March 14, 1925 Patented Jan. 26, 1926. i

UNITED STATES f 1,570,881 PATENT OFFICE.

HUBERT A. ELKINS, F MIDKIFF, Wns'rv VIRGINIA.

- GAS REGULATOR.

Application filed March 14, 1925. Serial No. 15,547.

The present invention appertains to a *gas` regulator, and has for its principalobject to provide a valve structure which will close when the pressure of the gas `from the source of supply diminishes to a certain predetermined point.

Another important object of the invention is to provide a gas regulator of this nature. 'wherein the valve structureI will Yremain closed when once having been actuated to a closed positionY until'it ismanually operated to an open position, thus preventing the escape of gas through an open burner or the like should the flame thereof have been previously put out by the diminishing of the pressure.

A still further very important'object of the invention is to provide a gas regulatoi of this nature which is simple in its construction, efficient and reliable in its operation, one which is inexpensive to construct, not liable to readilyget out of order, strong, durable, and otherwise well adapted to the purpose for which it is designed.

IVith the above and numerous other objects in view as will appear as the descrip-k tion proceeds, the invention resides in certain novel features of construction, and in the combination and arrangement of parts as will be hereinafter more fully described and claimed.

In the drawing The figure is a sectional View through the improved gas regulator, embodying the features of my invention.

Referring to the drawing in detail, it will be seen that 1 designates a cylinder which is closed at its ends by the heads 2 and 3 heldin place by bolts 4 orv any other suit-able fastening elements. Pistons 5 and 6 are slidably mounted within the cylinder 1 and are prevented from rotating by projections 7 extending into slot 8 provided to extend longitudinally lof the bottom of the cylinder 1. Frames9 and 10 project from Vthe inner ends of pistons 5 and 6 respectively and are provided with seatV portions 11 for receiving theends of a coiled spring which normaly hold the pistons 5 and 6 against the heads 2 and 3 respectively and holds the ends of the frames 9 and 10 separated.

A plate 13 is fixed to the cylinder, 1 on the bottom thereof by fastening elements to project beyond the end of the cylinder on which the head 3 is disposed. A vertically disposed cylinder 15 is mounted on the plate 13 having its upper end closed by a cap 16. A rod 17 is slidable through the cap 16 into the cylinder 15 and a, slide valve plunger 18 is mounted on the inner end' thereof, thev cylinder 15 acting as a valve casing.

This cylinder 15 is provided with van intake opening 19 adjacent its lower end and v14 or in any other suitable manner so as an outlet opening 20 adjacent its upper end.' A ipe 21 leading from a source o'f supply o gas communicates with the opening 19 and a pipe 22 leads from the opening 20 to burners or the like. Y

A pipe 23 is connected to the pipe 21 and extends through the head 2, and a branch 2A of this pipe 23 extendsthrough the head 3. A stndard 25 rises from the cylinder 1 and rockably supports a lever 26 which is provided with a pin and slot connection 27 with the rod 17 at one end.

Adjacent the other end a link 28 is pivotally connected to the lever and itis pivotally connected to a slide bar 29 slidably mounted through a. transversely extending opening 30 in the cylinder 1 at a center point thereof. Thisslide 29 is adapted to be disposed between the frames 9 and 10 so as to hold the pistons y5 and 6 at the ends of the cylinder 1.

A coil spring 31 is mounted in the bottom Of the cylinder 15 and impinged upwardly against the bottom of .theplungcr valve 18. In order to open the regulator so as to allow the ilow of gas, the handle 33 of the lever 26 is raised so as to lift the slide bar 29 from between the frames 9 and 10, thereby slmultaneously pushing the rod 17 downwardly so as to force the valve 18 past the opening 19, that is below the opening 19 and therefore the gas is free to flowthrough the pipe 21, cylinder 15, opening 2O and pipe 22. The pressure will be delivered through Vpipe 23 and branch 24 so as to force the pistons 5 and 6 toward each other until the frames 9Vand 10 abut so that the side bar 29 may rest thereon.

Now should the pressure in .the line 21 decrease beyond Va certain point, it will be seen that the spring 12 will be sutheiently strong to force the pistons 5 and 6 away from each other so that the slide bar 29 may gravitate down between these frames 9 and 10, thereby lifting up on the slide valve 18 so as 'to raise it above the opening 19 and shut ofll the gas. V Should the pressure rise, it cannot force the pistons 5 and 6 toward each other because the slide bar 29 is disposed between the frames 9 and 10 and thus should the burners in communication with pipe 21 go out after the pressure has decreased, there will be no danger of the gas being turned on when the pressure is again increased.

rIhis is of the utmost importance and will be immediately appreciated by those familiar with natural gas or gases wherein pressure has a tendency to decrease from time to time.

It will be apparent from the above that the embodiment of the invention which I have disclosed herewith by way of example is simple in construction, cliicient and reliable in operation, and attains all the features of advantage enumerated as desirable in the statement of the invention and the above description, aud it will further be apparent that numerous chan-ges in the details of construction, and in the 'combination and arrangement ot' parts may be resorted to without departing from the spirit or scope of the invention as hereinafter claimed or sacrificing any of its advantages.

Having thus described my invention, what I claim as new is In a gas regulator, a valve structure in the gas line, a cylinder', a pair of pistons in the cylinder, frames on the inner ends of the pistons, a slide bar extending through the cylinder between the pistons, spring means between the trames tending to normally hold the pistons on the ends ot' the cylinders, pipes connecting the gas line with the ends of `the cylinder' so that the pressure will tend to maintain the pistons toward each other with the trames in abutment .so that the slide bar may rest thereon, a. lever for operating the valve, and a linl; connecting the slide bar to the lever so that the valve will be opened when the slide bar rests on the frames and so that the valve will be closed when the slide bar .is disposed between the frame.

In testimony whereof I a'llix my signature.

HUBERT A. ELKINS.

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