US32670A - Gas-kegulatok - Google Patents

Description

EATENTED JUNE 25, 1R61.4

No.l 32,670.-

G. E'. SMITH. PORTABLE `GES REGULATOR.

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GEO. H. SMITH, OF ROCHESTER, NE\V YORK, ASSIGNOR TO SILAS O. SMITH, OF ROCHESTER, NEWv YORK.

GASfREG'rULAToR.

Specification of Letters Patent No. 32,670, dated June 25, 1861.

T o all whom 'it may concern:

Be it known that I, GEORGE HAND SMITH, ot' Rochester, in the county of Monroe and State of New York, have invented a new and useful Portable Gas-Regulator; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing, making a part of the same.

The drawing is a vert-ical central section showing the internal arrangement of the several parts.

The nature ot' this invention consists in the employment, in portable gas regulators, of a long cylindrical valve, operating in a barrel the bore ot' which is of a corresponding shape and size therewith, and in which thesaid valve is moved longitudinally by means of the back pressure ot the gas upon a flexible diaphragm to which the valve is attached, and which constitutes the covering ot an overcharged cushion of confined airg' lproper, whether used single or double; and

its object is to overcome the great dil'liculty that has been experienced in obtaining a gas regulator that would eifect the uniform and continuous discharge of small.quantitiesof gas from highly charged vessels of the same where the flow is very small, and the variation oit pressure very great, (as in contradistinction from the great variety of gas regulators t'or local purposes where the amount ot' iiow is very great and the variation of pressure very slight, as Afor street gas, -and to provide a portable gas regulator, that shall be capable ot' standing severe jars, as on a locomotive; and that shall be delicate in action, and durable in construction.

B, is the air chamber.

C, is the cap which covers the liexible diaphragm D, which is composed of two leaves g, and z., of rubber. The lower, or primary one z, is hermetically sealed to the edge otl the shell of the air chamber B, bly heated shellac, or otherwise. The ring B, is screwed to the chamber B, the flange s, lirmly clasping the edge ot' the cap O. The valve barrel F, may vbe cast with the cap O, or it made separate the joint between them may be soldered, or otherwise rendered air tight. The top of the valve barrel F, is chambered out, and covered with the screw cap E, the joint being packed with the leather ring c. The valve Z), is made of brass wire, which shall exactly lit the bore through the barrel F, the said bore being slightly enlarged at the top forming a beveled seat z", for the head a, of the valve to close upon, when the diaphragm D, is pressed entirely down, as shown by the dotted lines.) The length and diameter of the operating or straight portion of the said wire or cylindrical valve, is made proportionate to the amount ot' frictional surface required to otter sufficient resistance, to the passage of gas at high pressures. The wire is then placed in the barrel with the upper end projecting into the said enlargement, and type metal is cast around it, thus forming the beveled head a, on the valve b, which exactly tits the said seat z'.

The valve J), at its lower end, may be liled oit on one side so as to leave a wedge shaped, or oblong space b', between the valve and the inner surface of the barrel, the enlarged end of the said space o, being next to the hub e, so to open into the space between the diaphragm D, and cap C,

and its point of intersection terminating just below the beveled seat fi., when the valve is clear up, as shown in the drawing, The lower end of the valve 7), is tapped into the hub e, which is rigidly lixed to the leaf g, thereby rendering it unnecessaryto peritorate the under, or primary leaf 7L, or, if desired, there may be a flat rubber' ring made on the lea-f 7L, to attach the hub e, to, and use but one leafl for the diaphragm.

The chamber B, is charged by exhausting the air from between the diaphragm D, and the cap C, admitting air through the aperture f, which is plugged, and sealed over, when the said chamber B, is sutliciently inflated to hold the valve o, up as seen in the drawing, thus producing the condensation of air in said chamber B.

The gas enters from the supply gas holder at the inlet y), and passing in the direction indicated by the arrows, it escapes at the outlet, q, where the gage cock is attached, without` operating t-he valve, when the gage cock is open, but should it be turned oil),

with minute jets, or otherwise, than the ilow or amount of gas entering the regulator by the inlet pipe p, a reaction or back pressure will be produced upon the diaphragm D, pressing it downward, drawing' the attached valve b, down with it, thereby diminishing the open space b, and increasing the frictional surface for the passage of the gas, between the cylindrical portion of the valve, and the inner surface of the barrel, thus cutting off the iiow of gas, at the inlet, proportionate to the escape of gas at the outlet, thus rendering the inlet, by means of the gage cock at the outlet, adjustable. A further action of the back pressure is to depress the valve sufficiently far, at lirst, that with the gradual decrease of pressure in the gas holder, the open space b, may be proportionately increased, and the frictional surface between the valve and barrel decreased, thereby rendering the amount of escaping gas always constant,-until the pressure in the holder shall equal the back pressure in the regulator, which latter is comparatively slight. Should the pressure upon the diaphragm become too great for its strength at any time, it would be forced down, as shown by the dotted lines, and the head a, of the valve would be drawn into its seat z', cntirely cutting off the flow of gas, thus relieving the pressure.

lVhat I claim as my invention, and desire to secure by Letters Patent isl. The employment, in portable gas regulators, of a long cylindrical valve operating as described, and moved longitudinally, by means of the back pressure of the gas upon an overcharged cushion of confined air, (to the covering of which the valve is connected).

2. Attaching the valve to one leaf of a double diaphragm, or, to a ring of rubber attached to the single diaphragm, substantially as, and for the purposes herein set forth.

GEORGE HAND SMITH.

lVitnesses H. W. Dronrnson, ED. M. SMITH.

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