US408889A - Steam-pressure or damper regulator - Google Patents

Description

2 Sheets-Sheet 1.

(No Model.)

I J. J. LOWDEN. STEAM PRESSURE 0R DAMPER REGULATOR.

N0. 108,889.v Patented Aug. 13, 1889.

N, PETERS. Fugro-uchngnpher. wnhingmn, D4 c.

(No Model.) 2 Sheets-Sheet 2. J. J. LOWDEN.

STEAM PRESSURE 0R DAMPER REGULATOR.

No. 408,889. Pajtented Aug. 18, 1889.

.Ar I 7 a N PEIERS. Phamurhogmphnr, wnuhingtcn. D. t.

y UNITED STATES PATENT OFFICE.

JAMES J. LOVVDEN, OF BOSTON, MASSACHUSETTS.

STEAM-PRESSURE OR DAMPER REGULATOR.

SPECIFICATION forming part of Letters Patent No. 408,889, dated August 13, 1889. Application filed February 25, 1889. Serial No.301,058. (No model.) y

in steam-pipes, or for regulating the dampers of boiler-furnaces-by the pressure of steam in the boilers; and the invention consists of certain details of construction hereinafter fully described, and pointed out in the claims.

Referring to the accompanying drawings, Figure l represents a front elevation of a steam-pressure or damper regulator embodying my invention supported by a standard on the floor. Fig. 2 is a vertical longitudinal secv tion through the same. Fig. 3 is a side view of the same, showing it supported by a wallbracket. Fig. 4 is a plan or top view of a divided standard for supporting the regulator. Fig. 5 is ahorizontal section through a divided wallbracket for supporting the regulator. Fig. 6 shows the regulator supported by a wall-bracket and applied as a steam-pressure regulator. Fig. 7 shows the regulator supported by a standard and applied as a damperregulator. Fig. S shows amodiiication of the regulator.

A A represents an outer casing divided near its center by a partition B. The upper portion or compartment A is fitted with a piston C, secured by means of a cap D to a rod E, which extends down through a bearing b into the lower compartment A', that forms what I calla dash-pot. To the lower end of the rodE is secured a perforated disk G. The lower end of the casing A is closed by al cap A2, fitted with a screw-plug d.

H is a valve-box cast in one with the casing A A and provided at its lower end with a cover I, to the lower end of which the steampipe is connected. This cover is provided with a cylindrical extension z', that extends up into the valve-box and forms a seat for the valve J, the stem j of which extends up through a cap or cover K, the upper end of this cover being provided with an opening through which is passed a bar I., the cover K having on one side two ears or lugs la, to which the bar L is fulcrumed at l. The bar I. rests upon the valve-stem j, and is .provided with two weights M M, by which the pressure on the valve J is regulated according to the pressure required on the low-pressure side of the valve V. The weights are held in the required position by thumb-screws m. P is a drip-cock for carrying off the products of condensation from the cylinder A, and Q is an inlet to the dash-pot A', by means of which it is supplied with oil or other iiuid. This inlet is closed by a cap q.

To open the valve in the steam-pipe or the damper in the flue, I employ weights R R R2, which are placed around the stem of and inside the piston C, one or more of these weights being employed according to the power required to open the valve or damper.

I support the apparatus by means of a divided standard S, as shown in Figs. l, 2, 4, and 7, or by a divided wall-bracket S, as shown in Figs. 3, 5, and 6.

Then supported by a divided standard, I employ a sleeve T,I which is free to be slipped up, and when the two halves of the standard are adjusted in position the sleeve T is let down over them, as shown in Figs. l and 2,

and securely holds them in position on the lower portion Al of the casing. Vhen supported by a divided wall-bracket S, as shown inFigs. 3 and 5, the bracket is placed around the upper portion A of the casing, and the two parts are held together by a single screw s.

In Fig. G U represent the steam-pipe,Vthe valve to be operated, IV the cord connecting the valve V to the cap D, and X is a pressure-gage connected to the steam-pipe between the valve V and the regulator.

The operation is as follows: lhen applied as a steam-pressure regulator, as shown in Fig. G, the steam passes in the direction of the arrow l through the valve V in the steampipe U, and the regulator is connected to said steam-pipe by a sm all pipe u. The pressureregulator is connected to the steam-pipe U on the low-pressure side of the valve V, and the steam passing up through the pipe u enters the regulator through the valve J and passes under the piston C, which, as the pressure in- IOC creases, rises, and the rod D,being connected to the weighted lever fn of the valve V by means of the cord IV, allows the lever to fall, which closes the valve V. Should the pressure in the pipe become too low, then the piston C falls and draws upon the rope IV, thereby opening the valve V. Then applied as a damper-regulator, as shown in Fig. 7, the aetion is exactly the same, only the steam may be taken directly from the steam-generator by the pipe U2, and the rod I) is connected to the lever r2 of the damper V2.

Should the pressure of steam in the pipeU be suddenly increased and the steam rush into the regulator, the latter will be prevented from any sudden jerk, as the piston being sccurcd to the rod E, that passes down into the dash-pot or compartment A, and provided at its lower end with the perforated disk G, cannot rise faster than theoil or other fluid in the dash-pot can pass through the openings in the disk G. Therefore the piston, although aifected by the slightest variation in the pressure of steam, will always move steadily, and not by jerks.

In Fig. 8 I have shown a modification in which the pressure of the steam is admitted to the top of the piston C, instead of underneath, as before described. In this case I close the upper end of the cylinder A by a cover A2 and cast the valve-box II in one with the cover, and to carry oif the products of condensation I form a small hole c2 in the piston, through which they pass into the lower portion of the cylinder A and out through the drip-cock P. In this arrangement the weights R are not required, the valve or damper being weighted so as to open it and the pressure of steam on the top of the piston C closes it when the pressure is more than required.

That I claim as my invention is- 1. A steam-pressure or damper regulator, consisting of an outer casing divided into two compartments, a piston in the upper compartment and a perforated disk in the lower compartment, a rod passing through the partition and connected at its upper end to the piston and at its lower end to the perforated disk, and a valve for controlling the admission of stcamto the upper compartment, substantially as sot forth.

i?. In a pressure-regulator, an outer casing divided into two compartments A A by a partition B and valve-box II, all cast inonc piece, substantially as shown and described.

In a pressure-regulator, an outer easing divided into two compartments A A by a partition B, and a valve-box II, all cast in one piece, in combination with thc piston C, rod E, and perforated disk G, the cap I, having a valve-seat i', valve-box ll, and cover K, substantially as and for the purposes set forth.

4:. A steam-pressure or damper regulator, consisting of a cylinder, a piston working therein, avalve for controlling the admission of steam to said cylinder, a drip-cock bctween said valve and cylinder, a dash-pot, a perforated disk, and a rod connecting said disk with the piston, substantially as and for the purposes set forth.

5. In a steam-pressure or damper regulator, the combination of a cylinder, a hollow piston,and weights fitting inside the upper portion of said piston, with a valve for controlling the admission of steam to the said cylinder and a drip-cock between the Valve and cylinder, substantially as and for the purposes set forth.

(3. In a steam-pressure or damper regulator, the combination of an outer easing forming a cylinder A and a dash-pot A', the piston C, rod E, perforated disk G, and weights R, with aweighted valve J, for controlling the admission of steam to the cylinder, a drip-cock I), between the valve and cylinder, an inlet Q, for supplying the dash-pot with fluid, and a bracket or support for the regulator divided in its center, substantially as shown and described.

7. In a steam-pressure or damper regulator, an outer casing divided into two compartments A A', the perforatedm disk G, rod E, and piston C, having a hole c2, in combination with the cover A2, valve-box II, and Valve for regulating the admission of steam to the upper part of the cylinder, and a drip-cock P, substantially as shown and described.

In testimony whereof I have signed my name to this specification, in the presence of two subscribingwitnesses, on this 21st day of l `ebruary, A. l). 1889.

JAMES J. LOIVDEI Titncssesz GHAs. STEERE, EDWIN PLANTA.

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