US756492A - Steam-valve for train-pipes. - Google Patents

Description

' PATENTED APR. 5, 1904.

RE. GOLD. STEAM VALVE FOR TRAIN PIPES.

APPLICATION FILED NOV. 23, 1903.

'NO MODEL M r 5 M llllllll' mmmmm W llllll R O T N E V N .catented April 5, 1904.

PATENT OFFICE.

EDWARD E. GOLD, OF NEW YORK, N. Y.

STEAM-VALVE FOR TRAIN-PIPES.

SPECIFICATION forming part of Letters Patent No. 756,492, dated April 5, 1904.

Application filed November 23, 1903. Serial No. 182,426. (No model.)

To all whom it may concern.-

Be it known that I, EDWARD E. GOLD, a citizen of the United States, residing in the borough of Manhattan, city, county, and State of New York, have invented certain new and useful Improvements in Steam-Valves for Train- Pipes, of which the following is a specification.

Steam-pipes for trains according to some systems are provided with valves at the opposite ends of each car. l/Vhen the steam is on, the valve at the rear end of the rear car is usually left open a very little to permit drainage and the passage of some steam. According to my invention a valve is provided specially adapted for use as an end valve on such trainpipes.

My improved valve permits a regulable slight leakage of steam, and for this purpose is provided with means for holding it in any desired one of a plurality of positions closely adjacent to its closed positionl The possibility of adjusting the opening and holding the valve firmly in the adjusted position adapts it to trains of different lengths, the operation of the system on long trains being more efficient where the opening of the rear end valve is larger than would be necessary for shorter trains. Various other advantages are referred to in detail hereinafter.

The accompanying drawings illustrate an embodiment of the invention.

Figure 1 is a longitudinal section. Fig. 2 is a plan of the inside of the valve, the top plate being removed and a portion of the mechanism being shown in section. Fig. 3 shows in plan the several elements of one part of the impositive lock used. Fig. 4 is a detail view of the valve-body.

The stem of the valve and the casing or other suitable fixed structure are provided with com-- plementary interengaging device's which are pressed into engagement with each other with a pressure sulficient to hold the valve in any one of the desired positions in which it may be set, notwithstanding the jarring which it receives and the steam-pressure which may be against the valve, but not sufiicient to prevent the movement of the valve by hand to another position. One member of the impositive lock thus provided may be accessible from outside of the casing, being preferably carried With ward steam pressure.

the spring which controls it in a special socket attached to the casing from the outside.

The valve shown is similar to-awell-known type the construction and operation of which are specifically set out in my Patent No. 585,383, of June 29, 1897. The valve-body A is substantially a cylinder arranged with its axis horizontal and moving in guides B on opposite sides, the movement being effected by means of an eccentric (I, carried on the shaft D, the upper end of which carries a hand-lever E. The casing F has at one end a valveseat G, against which the valve closes. The movement of the valve in the opposite direction is limited by a stop H, projecting upward from the base of the casing. A coverplate J, preferably having a stufiing-box M formed integrally therewith, is removably arranged to permit the introduction of the valve proper and connected parts into the casing. The improvement is especially adapted to valves of this type with a rotatable or oscillatory operating-stem and a Valve proper moved transversely thereto and bodily toward and from its seat, because such a valve indicates at once by the angular position of the handle the exact position of the valve and can be moved from one extreme position to the other quickly by a fraction of a complete turn and because by reason of the eccentric or similar motion-transmitting device employed the first opening movement of the valve may be very gradual. The improvement, however, may be applied to valves of various types other than that herein shown.

A disk K is fixed on the operating-stem of the valve. Preferably the disk K and also the eccentric C are formed integrally with the valve-stem D, and a spring-washer L substantially fills the space between the top of the disk and the inner face of the cover J. The disk overlies the valve A. I thus prevent upward movement of the stem and connected parts or of the valve by the unbalanced up- The disk K is provided on its edge with a number of beveled teeth N N. Projecting through the side Wall of the casing F is a bolt 0 of rectangular crosssection and beveled at its inner end and pressed in by a spring P to hold it in engagement with the teeth on the disk K. The arrow inposition.

dicates the direction of rotation in opening the valve, the valve being shown in the closed position. The spring P holds the bolt 0 in engagement with the teeth of the disk under ordinary running conditions. The springpressure, however, is such as to yield to a force applied to the hand operating-lever E. Thus the shaft may be turned in any desired position in which the teeth of the member K engage the bolt 0, and the engagement of these teeth Will hold the valve in such The disk K may be toothed over any desired part of its circumference. For example, I have shown a series of teeth N in position to hold the valve shut or in positions closely adjacent to its closed position and a second series of teeth N in position to hold the valve open with the eccentric at or nearly at a right'angle to its closed position, which is the ordinary open position of the valve. The

' teeth N, preferably N also, are made small, so

strong frictional engagement might serve the same purpose, permitting the same slight differences of position. Y

The bolt 0 and spring P are preferably carried in a socket Q, separately formed from the valve-casing F and attached to the latter from the outside. By the use of a special socket for these parts their form and size may be designed without restriction or special adaptation to the shape of the valve-casing F or the rather limited space therein. The socket Q, is closed by a cap R at its outer end, which acts as an abutment to receive the reaction of the spring P and which may be adjusted, as shown, to adjust the strength of the spring. The casing F has a cylindrical boss S, into which the cap R, carrying the socket Q, and bolt O, screws. This device can be very easily attached to the casing, and

the bolt and connected parts can be introduced into the socket Q, by merely removing the cap R. I

By making the shaft and eccentric and also the disk K, where the latter is used, in one piece, the casing F, guides B, stop H, and valve-seat G in another single piece, and the cover-plate J and stufiing-box M in a third single piece, the cost is reduced and the assembling or repairing of the valve much facilitated. The unitary nature of the socket or smaller casing Q, and inclosed parts and the ease of its application to the valve-casing contribute also to the same advantage. I

The invention herein described presents certain improvements over the invention described in my application, Serial No. 172,280, filed September 8, 1903, and has certain broad features in common therewith. The broad features not claimed herein are claimed in said application.

Though I have described with great particularity of detail a complete embodiment of my invention, yet it is not to be understood that the invention is limited to the specific construction disclosed. Various modifications of the same in detail and in the arrangement and combination of the parts may be made by those skilled in the art without departure from the invention.

What I claim is 1. In a steam-valve, an impositive lock comprising a pair of members, one within the valve-casing and another extending into said casing to engage the first and accessible from outside of the casing.

2. In a steam-valve, an impositive lock comprising a pair of members, one carried by said operating-stem within the valve-casing and another carried in a socket attached to said casing from the outside.

3. In a steam-valve, an impositive lock comprising a pair of members, one carried by said operating-stem within the valve-casing and another extending into said casing to engage the first, a socket carrying the latter member, and a spring within said socket bearing against such member, said socket being attached to said casing from the outside.

4:. In a steam-valve, an impositive lock comprising a pair of members, one carried by said operating-stem within the valve-casing and another consisting of a bolt 0 extending into the casing and engaging the first-mentioned member, a socket Q carrying said bolt, a spring in said socket pressing said bolt forward, and a cap R on the outer end of said socket.

5. In a steam-valve, in combination, arotatable operating-stem D,'a valve proper A, and an impositive lock including a member held against upward movement and engaging the top of said valve proper to prevent upward movement of the latter.

6. In a steam-valve, a valve-stem D having an eccentric C, and a locking member K formed integrally with said stem.

7. In a steam-valve, in combination, acasing F having an integral valve-seat at one end, a cover J having a stufiing-box' M formed integrally therewith, a valve-stem D carrying a locking member K, and a socket Q carrying a cooperating locking member 0.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

EDWARD E. GOLD. Witnesses:

THEODORE T. SNELL, FRED WHITE.

Images