US423673A - Dam per- reg u lator - Google Patents

Description

L. GOPLESTON. DAMPER REGULATOR.

(No Model.)

Patented M N. PUIRS. W -"Mm Wahinilon. (L Q PATENT OFFICE.

LANOELOT COPLESTON, OF NYACK, NEW YORK.

DAM PER-REG U LATO R.

SPECIFIGATIbN forming part of Letters Patent No. 423,673, dated March 18, 1890. Application filed May 25, 1889. $erial No. 312,064. (No model.)

boilers.

supported in any desirable bearings and oon- I will describe a damper-regulator embodying my improvement, and then point out the novel features-in the claims.

In the accompanying drawings, Figure 1 is an elevation of a damper-regulator embodying my improvement, certain parts being shown in section. Fig. 2 is an enlarged. sectional view of a valve.

Similar letters of reference designate corre-. sponc'ling parts in both figures.

A designates a shaft from which motion is imparted to operate a damper. It may be nected with a damper in any approved manner.

B designates a wheel affixed. to the, shaft A. As here represented. it has a grooved pe= riphery.

O designates a cylinder occupying an upright position. It is fitted wit-h a piston D. This piston has a rod D, which passes out of the cap or cover at the upper end of the cylinder. On the piston-rod above the cylinder cap or cover is a projection D This forms a stop, whereby the piston is prevented from descending beyond a. certain point within the cylinder. The piston-rod is connected. to a chain, band, or strap E, extending over a guide-pulley F, which is shown as having a grooved periphery, and may be supported in any suitable manner. This chain, band, or strap also passes around the wheel B and serves to impart a rotary motion to the wheel B, and consequently to the shaft A. The end of the chain, band, or strap, after passing around the wheel B, has fastened to it a weight G. This weight will be made somewhat lighter than the piston D, so that the piston may descend when it has nothing but the weight G to oppose its descent.

In the lower part of the cylinder G, below will cause the rotation. of the wheel B.

the piston D, are a valve I and a weight J. The valve I is shown as having a cylindrie body or main portion 2" and a stem 4?. The latter will preferably have wings, so that it will not prevent the passage of steam past it. The stem 2' enters ahole arranged at the center of the bottom cap or head of the cylinder. The valve-seat is at the top of this hole and the cylindric body or main portion a" of the valve is adapted to rest upon this seat. It will be seen that the weight J is supported wholly by the valve, and that there is a space between the bottom of the weight and the lower cap or head of the cylinder, so that the steam may act upon a surface of the weight to resist the closing of the valve. From this space a port or passage 0 extends. In the extremity of this port or passage a petcock K is fitted. This petcoek may be adjusted to allow steam to escape more or less freely. The lower cap or head of the cylinder is in communication with a steam-boiler, so that steam can flow through it. As shown, it has a neck. with which a steampipc may be connected.

The boiler-pressure is always acting upon the valve I. The exposed surface of the valve will. bear such relation to the normal pressure and to the weight J that so long as the pressure 'does not deviate materially the valve will be slightly raised, and will. be sustained above the seat. The peteoek is adjusted so as to allow of the escape of sufficient steam to maintain this condition of things, and so the piston D will not under ordinary conditions be moved. If the pressure rises materially, all the steam will no longer be able to escape through the peteock, and hence it will raise the piston D. Thereupon the weight G The damper will then be more or less closed. As soon as the pressure of steam is reduced by the adjustment of thedamper, so that all the steam that enters the cylinder may escape by the petcock, the piston will descend, the damper will be reversely adjusted in consequence of the descent of the piston, and the normal condition of thin gs will be established.

WVhat I claim asmy invention, and desire to secure by Letters Patent, is

1. In a damper-regu1ator, the combination, with a cylinder constructed to communicate with a boiler, of a piston in the cylinder, at piston-rod extending therefrom, a connection between the piston-rod and a damper, a weight on said connection, a stop limiting the movement of the piston-connection, a valve seated in the lower cap of the cylinder and so constructed that a pressure of steam bears normally on and presses the valve, and a cock to adjust the escape of steam to maintain the valve normally above its seat, substantially as specified.

2. I11 a damper-regulator, the combination, with a cylinder and a piston in the cylinder having connection with a damper, of avalve in said cylinder below the piston, a Weight supported wholly by said valve above the lower head of the cylinder, providing a space and having a surface upon which entering steam may act to resist the closing of the valve, a port extending from said space, and a cock at the extremity of said port, whereby a uniform pressure of steam is maintained to keep the valve normally open, substantially as specified. j

In a damper-regulator, the combination, with a cylinder and a piston in the cylinder having connection with a damper, of a valve controlling the admission of steam to said cylinder, a weight supported by the valve to move in the same vertical line with it and exposed to steam flowing toward the piston and having a surface upon which steam passing the valve may act to resist the closing of the valve, a port between the valve and the weight, and a cock controlling the escape of steam from between the valve and weight, substantially as specified.

LANOEL'OT OOPLESTON. Witnesses:

JAMES WALsoN, .TOHN LYON.

It is hereby certified that in Letters Patent No. 423,67 3, granted March 18, 1890, upon the application of Lancelot Oopleston, of Nyack, New York, for an improvement in Damper-Regulators, an error appears in the printed specification requiring the following correction, viz: In line 8, page 2, the word presses should read passes and that the said Letters lment should be read with this correction therein that the same may conform to the record. of the case in the Patent Office.

Signed, eountersigned, and sealed this 25th day of March, D, 1890.

[SEAL] CYRUS BUSSEY,

Assistant Secretary ofthe Interior.

Gountersi gned.

O. E. MITCHELL,

Commissioner of Patents.

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