US282557A

US282557A - newton

Info

Publication number: US282557A
Authority: US
Publication date: 1883-08-07
Anticipated expiration: 1900-08-07

Description

(No Model.) 2 Sheets Sheet 1.

R. NEWTON.

REDUGING VALVE.

No. 282,557. Patented Aug. 7, 1883.

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(No Model.) 2 Sheets-Sheet 2 R. NEWTON REDUCING VALVE. No. 282,557. Patented Aug. 7

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UNITED STATES PATENT OFFICE.

ROBERT NEWTON, OF PROVIDENCE, RHODE ISLAND.

REDUCING-VALVE.

SPECIFICATION forming part of Letters Patent No. 282,557, dated August 7, 1883.

Application filed January 2, 1 883. (No model.)

To all whom it may concern Be it knownthat I, ROBERT NEWTON, of the city and county of Providence, and State of Rhode Island, have invented a new and useful Improvement in Reducing-Valves; and I hereby declarethat the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification.

This invention has reference to an improvement in devices for reducing the pressure of steam as supplied by the steam-generators, so that steam of a lower pressure may be used in drying cans, boiling, heating, and for other purposes.

The invention consists in the peculiar and novel construction of the inlet-valve, the mercury-chamber, and the connections with the same, by means of which the pressure of the reduced steam can be regulated as described.

Figure 1 is a perspective view of my improved device for reducing the pressure of steam, part of the case being broken away so as to show the interior of the same. sectional view of the same. section through the center of the valve. 4 is a cross-section of the valve and valve-case. Fig. 5 is a view of the valve, part of the case of which is broken away to show the segmental valve. I

In the drawings, A is thelower and A is the upper part of a rectangular box or case. The connections for the inlet and outlet of the steam are made to the lower part, A. The upper part can therefore be removed at any time for re pairs.

B is a mercury-chamber, and B an enlarge- Fig. 2 is a longitudinal Fig. 3 is a crossment extending across the width of the box A.

The object of this enlargementis to prevent the loss of mercury when the pressure is suddenly reduced and the mercury rushes into the mercury-chamber.

b is a float supported by the mercury in the chamber B. This float is connected with the lever 1), hinged on a standard placed 011 the valvecase (J. This valve-case is cylindricalin form, and is bored out and finished inside, so as to give a true bearing to the segmental valve 0. The valve-case O is provided with the elongated Fig.

openings 0 c and the valve 0 also with corresponding openings, 0 0 As there are three sets 'of openings in each, the area of the same is so of holes are made in the lever b and armd, so that the rod d may be connected at different points and thevalve adjusted in the valve-case. Connected with the mercury-chamber B is the pipe E, a portion of which is made up of a number of short pieces of pipe, e e, connected by means of swiveled connections, so that they maybe adjusted to any desired angle, to the upper end of which the mercury-cup E is secured. e e are supports for the swiveled pipes e 6. They consist of a flat piece of metal having two holes, through which the pipes e 6 pass. These supports maybemoved closer to or farther from the swiveled connection of the pipes e e, and thereby themercuiycnp can be raised orlowered.

F is a dead-load safety-valve of the ordinary construction. 9 are openings formed between.

the enlargement B and the wall of the case A, to allow any water of condensation to flow out through the outlet G. A separate outlet for the reduced steam may be made above the outlet G, and to the lower outlet a steam-trap may be connected to draw off the water automatically.

The operation of this device is as follows: The live-steam-supply pipe being connected with the inlet 0* and the pipe carrying off the reduced steam with the outlet, the mercurycup E is now raised to such height as will be necessary to allow a column of mercury. the weight of which per square inch or any fraction thereof is equal to the pressure that it is desired to maintain in the reduced steam. In this 0011- dition the mercury will be in the chamber B standing as high in the pipe E as it does in the chamber B. The float b is supported 011 the mercury, and the openings (1 in the valve will be opposite the openings 0 in the valve-case.

All the parts being properly adjusted, steam is -let-on and rushes through the openings in the valve, filling the box or case quickly. Thepressure, rapidlyincreasing, acts on the surface of the mercury and forces the same up the pipe E into the cup E. The float I), of less specific gravity than the mercury,but of considerable weight, descends as the mercury leaves the chamber B, and, through the lever 1), rod d", and arm (1, partially closes the valve by rotating the same. As soon as the pressure falls the mercury runs from the cup E and the pipe E into the chamber B, raises the float Z), and again opens the valve. Thus the pressure of the steam in the box or case A is balanced by the column of mercury, and as the height of this column can be readily adjusted outside of the case, the pressure can be regulated and maintained at any desired point, as the slightest change will change the level of the mercury in the chamber B, the float b, and through it the steam-supply.

As steam may be, and frequently is, drawn suddenly in large quantities, the mercury in the der anycondition escape.

cup E and pipe E is liable to rushinto the chamber B, so as to leap over the edges of the same, and a portion of the mercury is lost. To prevent such loss of mercury and the consequent derangement of the device, I extend the chamber B upward, forming the enlargement B of such dimensions that no mercury can un- The loss of even a small quantity of mercury changes the position of the float, and through the same of the valve,

and consequently the utility of thedevice. The peculiar construction of the valve permits the regulation of the admission of the live steam quickly at the slightest change of pressure, and thus prevents the excessive agitation of the mercury. 1

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. The combination, in a reducing-valve operated by a float sustained by mercury or other fluid, with the chamber containing the float, of lengths of pipe connected together by swivelfitting constructed so that the height of the column can be adjusted to balance the desired pressure, as described.

2. The combination, with the float b and chamber B, of the pipe E, the pipes e e, and the cup E, constructed to regulate the pressure in a reducing-valve, as described.

3. The combination, in a pressure-reducing valve, with the float b and means for controlling the steam-supply, of the chamber B, the pipes E and e e, the cup E, and the supports 6 e, constructed to support the pipes, as described.

ROBERT NEWTON.

Vitnesses:

J. A. MILLER, J 1:, M. F. BLIGH.