US504973A - Fluid-pressure regulator - Google Patents

Description

(No Model.)

stv-ANS. FLUID PRESSURE REGULATOR.

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UNTTED STATES PATENT OFFICE.

EVAN EVANS, OF CHICORA, PENNSYLVANIA.

FLUID-PRESSURE REGULATOR.

SPECIFICATION forming part of Letters Patent No. 504,973, dated September 12, 1893..

' Application filed December 2l. 1892. Serial No. 455,900. (No model.)

To all whom t may concern:

Be it known that I, EVAN EVANS, of Chicora, 1n the county of Butler and State of Pennsyl- Vania, have invented certain new and useful Improvements in Fluid-Pressure Regulators; 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 pertains to make and use the same, reference being had to the accompa-nylngdrawings, which form part of this specificatlon.

l\ [y invention relates to an improvement in iuid pressure regulators; and it consists in the novel combination andarrangement of parts which will be fully described hereinafter, and more especially referred Ato in the claims hereto annexed.

The object of my invention is to provide an improved regulator for governing the flow of either oil or gas to a furnace beneath a boiler whlch shall be operated automatically by the steam pressure within the boiler.

Referring to the accompanying drawings,- Figure l, is an elevation of a steam boiler and furnace having my improved regulator applied thereto. Fig. 2, is a vertical sectional Fig. 3, is a detached vlew of the internal parts.

The regulator is adapted to be placed on the plpe supplying oil or gas to the furnace so that the fluid must of necessity pass through the regulator.

A, designates the fluid inlet chamber while immediately above it is the chamber B, of increased size from which the fluid passes to the furnace. A shoulder C, is thus formed between the chambers A, and B, upon which rests the removable valve seat D flanged on lts opposite sides as shown at D and held in place by screws D2. Several of these seats may be provided for each regulator having central openings or passages which vary in size so as to govern the rapidity with which the uid is fed to the burner, thus making it possible for the same regulator to govern the supply of fluid to either a two or a ten horse power furnace. The upper end of the discharge chamber B, is shouldered as at B', and adapted to rest on this shoulder is the counter sunk gasket E, in which rests the pressure plate F, secured to the upper end of a vertically movable rod G, the former being held in position by the nut G', on saidl rod. Secured to said rod immediately beneath gasket F, is the valve H, which consists ot' an upwardly recessed disk, the cavity thus formed in said disk being filled with a packing material L-pret'erably rubber.

Depending from the chamber A, is the well J, and situated therein is the tube K, which is slotted transversely at its lower end as shown at K. Encircling the tube is the coiled spring L, which is secured at its upper end to the end of the tube while having its lower end connected to the transverse bar M, extending through the tube and the slots K. The upper end of the spring is coiled spirally as shown so that its diameter at this point is less than tube K thereby supporting it uponthe upper end of the tube in such a way as to prevent other than an expansive downward Inovement on the latter. The spring is normally contracted so that a downward push on said bar will expand the spring and thus create a pressure against the tension of the latter. The lower end of the rod G, extends into the tube K, and rests on bar M, and the device is so regulated as to hold the valve H, normally raised from its seat D. The tube K, rests on a head N, which latter is vertically adjustable by the screw O, depending from the lower end of the regulator and by this means the pressure of the spring upon the valve rod may be regulated.

Removably secured to the upper end of chamber B, is the cap P, under which steam is admitted through an opening P in its top from a suitable connection with the steam boiler.

Between the cap P, and the chamber B, is

arranged the flexible diaphragm Q, which may be of rubber or any other suitable material, and which is adapted to bear against the pressure plate F. The diaphragm is of such formation as to prevent the passage of steam therethrough to the chamber A.

In operation the fluid being fed to the furnace is allowed to pass from chamber A, through chamber B, to the burner as the valve is held normally raised from its seat by the spring L, thus leaving the passage through the seat D, uninterrupted. When the steam pressure in the boiler has become sufficiently IOO great to overcome the strength of spring L, the rod G, is forced downward by the pressure of the diaphragm ou plate F, thus forcing the valve II, to its seat and stopping the iiow of oil or gas to the burner until the steam pressure has become sutticiently reduced to yield to the pressure of spring L, when the passage through the regulator will again be open and Huid allowed to pass to the burner for consumption. It is apparent that the spring L, may be so formed that it, in connection with the set screw O, renders a very accurate adjustment of the regulator possible. The spring is preferably formed of steel wire which is square in cross section. The packing material in the valve H, seals the passage in the seat D, when the valve is resting thereon while at the same time the flanged edge of the latter is not subjected to the wear of a metallic surface as it would be were the valve to rest directlythereon without the interposition of an elastic material.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. An improved fluid pressure regulator comprising an inlet and an outlet chamber,a rod movable vertically therein, a valve on the rod between the chambers, a tube through which the lower end of the rod extends, a spring coiled about the tube to which it is secured, a connection between the lower ends 0f the rod and spring whereby the former is held normally in an elevated position, and a means for applying steam pressure to the upper end of the rod, substantially as shown and described.

2. A uid pressure regulator comprising an inlet and an outlet chamber, a rod extending therethrough, a valve on said rod arranged between the chambers, a tube slotted transversely at its lower end and through which tube the said rod extends, a spiral spring surrounding the said tube to which it is secured at its upper end, a transverse bar extending through the slots of the tube and to'which the lower end ot' the spring is secured, and a means for applying steam pressure to the upper end of the rod, substantially as shown and described.

3. A iiuid pressure regulator comprising an inlet and an outlet chamber, a vertically movable spring actuated rod extending therethrough, a valve on said rod arranged between the chambers, a removable countersunk gasket at the upper end of the outlet chamber, a pressure plate on the upper end of the rod for which the said gasket forms a seat, a removable cap for the regulator having a steam connection, and a Iiexible diaphragm between the cap and said pressure plate, substantially as shown and described.

4. A fluid pressure regulator having an inlet and a discharge chamber, a vertically movable rod, a valve between its ends for closing the passage between the chambers, a means

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