US85566A - Improvement in steam-pressure regulators - Google Patents

Description

FFIGE.

GEORG-E II. OORLISS, OF PROVIDENCE, ItIIODE ISLAND',A

IMPROVEMENT IN STEAM-PRESSURE REGULATORS.

Specification forming part of Letters Patent No. 85,566, dated January 5, 1869.

To all lwhom 'it may concern:

Be it known that I, GEORGE II. CORLIss, of the city and county of Providence, and State of Rhode Island, have invented a new and Improved Pressure-Regulator, andI do hereby declare that the ibllowing is a full, clear, and exact description ot' the same, reference being had to the annexed drawing, making a part of this specitication, in which my invention is represented by a longitudinal section through the center of the device.

This invention is for the purpose of effeetin g an automatic reduction of the pressure ot'steam, when it is to be used for heating, or where a higher pressure is raised in the boiler than is required for the purposes to which it is to be applied, and making such reduced pressure uniform. rIhis is accomplished by causing the steam to pass through a vessel having flexible sides, which, as the vessel fills with steam, are pressed outward in exact proportion to the direct pressure of the steam in chamberB acting upon the valve m, and the pressure of the reduced steam acting upon the sides of the vessel A, which, in expanding, close, or partially close, a check-valve, thus diminishing the tlow of steam just in proportion to the combined pressure in chamber `I3 and vessel A, thus gix-'ing, by the combined action of the hi gh-pressure steam upon the area of the valve mand the reduced lsteam upon the walls ot' the vessel A, a nearly uniform pressure of reduced steam under varying pressures in the boiler or chamber B.

In the drawings, A represents a met-allie vessel, having flexible sides c e', capable oi' being sprung outward when subjected to pressure from within. B is an external chamber, formed on the side y of the vessel A, and pro vided with a cap, C'.

'Ihe steam passes from the inductiolbpipe C into the chamber B, thence through a port, I, into the vessel A, whence it escapes through the eduction-pipe D.

The port I is opened and closed by a diskvalve, m, attached to the side of the vessel a', while the seat is attached to the opposite side, a.

The stem of the valve m thus extends from the side a through the vessel and port I; and when the port is closed by the expansion of the vessel A, the valve and its stem subserve the purpose of a tie or stay, and form a rigid and firm connection between the sides of said vessel, thus limiting their outward movement, and preventing any liability of damage to the vessel by an accidental increase of pressure.

'Ihe apparatus thus forms au automatic steam-regulator, controlling the iiow ot steam through the eduction-pipe, and rendering the reduced pressure uniform.

To facilitate the adjustment of the valve to any required pressure, it is, as shown in the drawing, screwed upon its stem, and may be held tirmlyin any position by a cheek or jam nut.

I do not, however, limit myself to any particular method of adj ust-ing the position ot' the valve, but may use any available means that will answer the purpose.

It is evident at a glance that while this apparatus is perfectly self-regulating, its simplicity of construction is such as to render it inexpensive and durable to a degree not `attained in any other devicehithcrto constructed for the same purpose.

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

1. A vessel with lexible sides, when the same is constructed and arranged substantially as herein shown and described.

2. 'Ihc combination and arrangement et vessel A, valve-stem a, and valve m, whereby to limit the outward movement of the flexible sides of the vessel A, substantially as described.

3. rIhe construction and arrangement of the vessel A and valve m, whereby the combined pressure in chamber B and vessel A shall opcrate to close the valve, substantiallyas set fort-h.

GEO. II. CORLISS. IVitncsses:

HENRY MARTIN, JonN (l. IURKIs.

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