US272282A - Gas-regulator - Google Patents

Description

I (NoModeL) J.H.LUTH-ER.

GASBEGULATOR.

Patnted Teb, 13; 1883.

UNITED STATES PATENT OFFICE.

JAMES H. LUTHER, OF KARNES CITY, PENNSYLVANIA.

GAS-REGULATOR.

SPECIFICATION forming part of Letters Patert No. 272,282, dated February 13, 1883. Application filed December 1882. (No model.)

v of Pennsylvania, have invented certain new and useful Inprovements in Gas-Regulators; and I do hereby dcclare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked Y thereon, which form apart of this specification.

reduced upper portion, a'.

Figure l is a vertical Section of the device;

Fig. 2, a similar view of a modification.

' This invention relates to improvements in gas-regnlators or those devices designed to govern the supply of gas to the point of consumption; and it relates more especially to a device of this kind intended for use with boilers. In employing gas for fuel in boilers, particularly where the gas comes from the natural reservoir in the ground, grave danger is liable if the flow is unimpeded. Not only may the pressure be greater than is desired, and it usually is, but it' many boilers are served from the same line in case some are shut off others will be under too great a pressure. The object of the present device is to govern the flow so that, no matter what its strength, the pressure can be regulated to any desired degree.

The invention consists in the construction hereinafter set forth.

In the annexed drawings, the letter A indicates the cylinder or regulator-body, havingthe piston C, consisting of the nain portion,

or body c and the reduced portion' or stem c' the forner in the chamber a, the latter in the This piston is furnished with a transverse passage, D, the Vertical axis of which is in the same plane with the vertical axes of the ports B B'. Within the cylinder, below the piston, is placed' a spring, E, between which' and the piston is a suitable ,packing, e. This spring is held in by a cap, F, and its tension i s regulated by the plate and screw G. To the flange a at the top of` the cylinder is bolted the cap H, the 'upper part of the cylinder and the under part of thecap being cnt away to form a recess, I. Within this recess is placed a diaphragn, K, of rubberor other flexible material. This diaphragm is secnred by its edge between the flange a y and cap H, and is held at its center to the top of the stern c' by the screw Ic, the under part of the cap H having the recess h to accommodate the head of the screw. This diaphragm K is made with a circular rib, k, and' within this rib a rigid plate, L, is secured to the diaphragm. The cap H- is tapped and screwthreaded nt h' to receive the pipe h fI'Olll the boiler.

In use this regulator is located at the boiler, the pipe IL being connected thereto, so that the pressure on top of the'diaphragn is the sane as that in the boiler. The 'induction-portB is connected with the high-pressure supply-pipo and the ednction-port B' with boiler,cocks being placed in the pipes on each side of the regulator. The spring E is given the proper tension'to connterbalance the pressure which is desired in the boiler, and the devic'e is ready for use. As the gas flows to the boiler the latter heats up, and the generatedstean, ex pandin g, passes into the recess I above the`diaphragm K. As soon as the steam-pressure 'equals the tension of the spring E the piston C Will be held in such position that the passage D will present just suflicient openings to the ports to permit theproper flow ot' gas. If the pressure of the gas should increase and the boiler become hotter, the stean-pressure would increase, and,forcing the piston down against the spring, would tend to close the ports by carrying the passage D farther down. This would diminish the supply `of gas and bring it back to the proper amount. In this way, as the pressure of the gas increases; the opening for its supply gets smaller, and as the pressure diminishes the spring forces the piston up, allowing a greate'r flow, so that .the flow is kept constant and at the'predetermined amount. As the steam operates on the diaphragnn, the 'ib G' in the diaphragm allows it to rise and fall without friction, the rib acting as a hin ge. The plate L, being rigid, equalizes the pressure and causes the diaphragm to rise and fall evenly.

With this device no packin g is needed IOG around the pisten above the ports, for if any gas should pass np it would be stopped by the dizphragm.

In Fig. 2 is shown a modification of the deviee. In this the diaphragm is dispensed with and the steain adnitted through the eap H drectly on top of the stem c' of thepiston G; or instead of on the top of the stern c' the stean may be admitted through a port, N, on the side of the eylinder and into the ehamber (t upon the body of the piston.

In either instanee the operation oi' the deviee is the same as that described in connection with the form shown in Fig. 1; In the form shown in Fig. 2 paehings n n'have to he used to make the piston gas-fight.

Having thus described my invention, what I claim is l. As a gas-regulntor, the eylinder A, having the opposite ports, B B', at its sides and a steam-opening at or near one end, in eonbination with the inelosed pisten havingthetransverse pussageD in the sanevertieal plane with that of the ports B B', the piston elosely fitting the eylinder and the stean-passage leading into the latter immediately above the piston, and the regulatingspring E, as set forth.

2. As a gas-regulator, the eylinder A, having the opposite ports, B B', at its sides and a stezun-opening at one end, and an inelosed pisten having the transverse passage D in the same vertical plane with that ol' the ports B B', in eombination with a diaphragm situated at one end of the eylinder, between the end of the piston and the stean-opening, all arrunged as and for the purpose set fortl.

In testimony that I elain the t'oregoing as my own I affix my signature in presence ol" two GEO. F. GnAIIAM, WILL A. COULTER.

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