US469373A

US469373A - Steam-pressure regulator

Info

Publication number: US469373A
Authority: US
Publication date: 1892-02-23
Anticipated expiration: 1909-02-23

Description

Sheet 1.

(No Model.)

'J. J. LOWDE-N. STEAM PRESSURE REGULATOR.

No. 469,373. Patented Feb. 23,1892.

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2Sheets Sheet 2.

(No Model.)

, J. J. LOWDEN. STEAM PRESSURE REGULATOR.

Patented Feb. 23, 18921.

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PATENT JAMES J. LO\VDEN, OF. BOSTON, MASSACHUSETTS.

STEAM-PRESSURE REGULATOR.

SPECIFICATION forming part of Letters Patent No. 469,37 3, dated February 23, 1892.

Application filed March 14, 1890.

T0 (0% whom it may concern.-

Be it known that 1, JAMES J. LowDEN, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massach usetts, have invented certain newand useful Improvements in Steam-Pressure Regulators, of which the following, taken in connection with the accompanying drawings, is a specification.

My invention refers to that class of regulators known as steam-pressure or damper regulators for maintaining an even pressure in steanrpipes or for regulating the dampers of boiler-furnaces bythe pressure of steam in the boiler; and the invention consists of certain details of construction hereinafter fully described, and pointed out in the claims.

Referring to the accompanying drawings, Figure 1 represents a side elevation of a steampressure or damper regulator embodying my invention supported by a wall-bracket. Fig. 2 is a vertical longitudinal section through the same. Fig. 3 is a vertical longitudinal section of a modification. Fig. 4. is a vertical longitudinal section through the valve and union. Fig. 5 shows the regulator supported bya bracket and applied as a steam-pressure regulator. Fig.6 is a similar view showing the regulator as applied to a damper-regulator.

A represents a casing or cylinder with the bottom or lower end cast in one therewith and its upper end closed by a cover B, having a sleeve B. In this cylinder A is fitted a piston O, to which is secured a piston-rod D, the upper end of which is provided with an eye cl, to which the cord or chain for operating the valve or damper is attached. The lower end of the cylinderA is provided with a nozzle, to which one end of a cook or valve E is secured, and to the other end of the cock is secured a condenser F, which may be a surface-condenser, as shown in Figs. 1 and 2, or a spraycondenser might be employed. G is a pipe for admitting cold water to the condenser, and 1-1 is an exit-pipe. To the lower end of the condenser is connected a petcock I for carrying off the products of condensation from the regulator.

J is a valve-box cast with five openings 1 2 3 4 5, each of which is screw-threaded. (See Figs. 2 and 4.) Over the opening 1 is placed Serial No. 343,866- (No model.)

a frame K, having two arms 7.: 7a, to one of which 7t" is fulcrumed a lever L, that carries a weight or weights M, and the lever passes through a slot in the arm 70. The frame K is held in place (after it has been adjusted to the required position) by a nut N, screwed into the openingl and having a collar or projecting flange that clamps the frame K in place. The nut is also provided with a hole in its center, through which passes a loose stem 1), the lower end of which rests on the valve P. The valve-box J is connected to the cylinder D by a pipe Q, that can be screwed into either of the openings 3 or 5, the other being closed by a plug 7, and it is connected to the main steam-pipe by a pipe R, that can be screwed into either of the openings 2 or 4, and the other is closed by a screw-plug 6.

The pistonO is provided in its bottom with one or more small holes a, through which the steam that enters the cylinder-A and the products of condensation pass to the condenser F, where the steam is condensed and the products carried off by the petcock I.

In Fig. 3 I have shown the steam admitted to the cylinderAon the under side of the piston G and the upper end of the cylinder connected to a condenser F byapipe S. In this case I have shown a spray-condenser; but either a spray or surface condenser may be employed, and to the cylinder-cover B is secured a small bent pipe T, fitted with a stopcock t. This pipe is to admit the required amount of air to the cylinder as the piston 0 falls, which in this case is lowered by means of weights U, placed upon the upper end of the piston-rod D, which is extended to receive same.

In Fig. 5 I have shown the regulator employed as a steam-pressure regulator, the piston-rod D being attached to one end of a lever 0) of valve V on the main steam-pipe IV by means of a cord or chain X, that passes over pulleys Y Y.

In Fig.6 I have shown the regulator as applied to a damper, in which case the cord or chain X is connected to the lever z of the damper Z.

In both Figs. 5 and 6 I have shown the cylinder A and condenser F as being in the boilerroom and the regulating -valve in the engine-room or oi'fice. It will be seen that while the pressure is controlled by the regulator in the boiler-room the regulating-valve can be arranged in another room away from the same.

In the drawings I have shown the cylinder A supported by a bracket A The operation is as follows: When applied as a steam-pressure regulator, as shown in Fig. 5, the steam passes in the direction of the arrow 8 through the valve V in the steampipe \V, and the regulator is connected to said steam-pipe by a small pipe R on the low-pressure side of the valve V, and the steam passing up the pipe R enters the regulator through the valve J onto thetop of the piston C, which as the pressure increases is forced down, and the piston-rod, being connected to the weighted lever o of the valve V by means of the cord X, draws up the lever, thus closing the valve. The steam in the cylinder escapes through the small openings 0 in the bottom of the piston 0, thus allowing the piston to be raised by the weighted lever 42, the valve V being opened accordingly. The steam passing under the piston 0 forms a cushion and causes the piston to move steadily and prevents it from being operated too rapidly or by jerks. The steam that passes through the openings 0 passes down into the condenser F, where it v is condensed, and the products of condensation are carried off by the petcock I. hen applied as a damper-regulator, as shown in Fig. 6, the action is exactly the same, only the steam may be taken directly from the steamgenerator by the pipe R, and the piston-rod D is connected to the leverz of the damper Z. It will be seen that by this construction steam can be admitted to the valve-box J by either of the openings 2 or 4: and pass to the cylinder A through either of the openings 3 or 5,

the other openings being closed by screwplugs 6 and 7. It will also be seen that the regulator can be placed in the boiler-room and the regulating-valve be located in any desired place or apartment away from the regulator, so that the pressure can be adjusted and be under the control of the superintendent or engineer.

\Vhat I claim as my invention is 1. A steam-pressure or damper regulator consisting of' a cylinder having a piston-head provided with one or more small openings, a valve for regulating the admission of steam, a pipe connecting said valve and cylinder, and a condenser attached to said cylinder, substantially as and for the purposes set forth.

2. A steam-pressure or damper regulator consisting of a cylinder A, piston 0, having small holes 0, piston-rod D, valve-box J, and valve Pfor regulating the admission of steam to the cylinder, in combination with a condenser F for condensing the steam as it passes from the cylinder A, substantially as set forth.

3. In a steam-pressure or damper regulator, the combination of a cylinder,a piston provided with one or more small holes, a piston rod, Weights mounted upon said rod, and an air-pipe with a condenser, and a valve for controlling the admission of steam to the cylinder, substantially as set forth.

In testimony whereof .I have signed my name to this specification, in the presence of two subscribing witnesses, on this 8th day of March, A. D. 1890.

JAMES J. LOWDEN.

\Vitnesses:

CHAS. STEERE, EDWIN PLANTA.