US463138A - Steam-valve - Google Patents

Description

(No Model.)

W. R. CARROLL. STEAM VALVE.

No. 463,138, Patented N0v.1'7, 1891.

WITNESSES INVENTOR UNITED STATES PATENT OFFICE.

\VILLIAM R. CARROLL, OF PELIOAN, LOUISIANA.

STEAM-VALVE.

SPECIFICATION forming part of Letters Patent No. 463,138, dated November 17, 1891.

Application filed June 9, 1891. I Serial No. 395,683. (No model.)

To all whom it may concern.-

Beit known that 1, WILLIAM R. CARROLL, a citizen of the United States, residing at Pelican, De Soto parish, State of Louisiana, have invented certain new and useful Improvements in Steam-Valves, of which the following is a specification.

It is sometimes desirable in operating steamengincs-as, for instance, in operating the engines used for driving cotton-gins-to enable the operator at the gin to cut off the steam from the engine independently of the use of the ordinary throttle; and the object of my invention is to enable this to be done, and I effect this result by combining with the steam.- pipe and in addition to the throttle-valve an independent valve and easing, thelatter preferably in the form of an elbow, and by arranging connections cxtending from the said supplemental valve to the gin or other place where the operator is stationed, as fully set forth hereinafter, and as illustrated in the accompanying drawings, in which Figure 1 is a plan view illustrating my improved valve and its connections; Fig. 2, an enlarged sectional. view of the valve and casing; Fig. 3, a cross-section on the line 3 3, Fig. 2.

The valve-casing A is preferably made in the form of an elbow with two branches 1 2 for connection with the horizontal and vertical connections of the steam-pipe, so that said casing will constitute a substitute for the elbow which is almost invariably used at some point in the line of the pipe, and in said casin g is a partition 4, having an opening 5,with a surrounding face 6, adapted to fit the cylindrical body 7 of a valve 13, which body .is hollow and provided with an opening or port 8, adapted to be brought to coincide with the port 5 of the partition 4:, but to be carried wholly from said. port when the valve is carried quarter around in each port, the move ment of the valve being then limited by the contact of the valve-arm 9 with a stop 10 01:12.

The valve B is hollow and closed at the top and has at the bottom two ports 13 13 and an intermediate cross-piece 14, which, when the valve is turned to carry the port A away from the port 5, comes opposite to and closes an elongated port 15 in a partition 16 of the casopened or closed at the same time.

In order to reduce the friction upon the valve, I cut away the casing, so that the valve will bear only upon the seat 6 around the port 5 and upon two seatsat the opposite ends, and I prefer to make these two seats 17 18 tapering or oonical,-the former adapted to the flaring head 10 of the valve and thelatter to the beveled end 20 of the valve, so that the latter may be ground to fit both seats closely, preventing the escape of steam, should any leak around the face 6, and also facilitating the in sertion of the valve in the casing. The valve is held in place by means of a spring 21, passing through the cap 22.

A spring or Weight is arranged to turn the valve in one direction. For instance, a cord 23, connected with the lever 9, passes over a guide-pulley 24 and has connected to it a weight 25, which tends to pull the lever in the direction of arrow, Fig. 1, to bring it against a stop 10, and thereby close the valve. A cord or other suitable connection 26 extends from the lever 9 to the operators station at the gin or other position, so that at any time the operator by pulling upon said cord can turn the valve quarter around, closing the ports 5 and 15 and cutting off the steam, regardless of the position of the throttle-valve.

While I prefer to provide the valve with the cross-piece 14 for closing the port 15 for additional security in case of leakage around the case 5, the said cross-piece and port may, if desired, be dispensed with. I

It will be seen that the. valve above described may be readily constructed, that the only finishing required is at the points 19 2O ing, so that the ports 5, 8, and 15 will all be and around the port 8, that the casingA may Y be readily machined to form the seats in their proper relation, and that said casing serves both as a valve-casing and as an elbow for L-union.

Vithout limiting myself to the precise construction and arrangement of parts shown and described, I claim 7 1. The within-described valve, consisting of a casing having two branches at right angles to each other, a partition 4, provided with a port, inclined valve-seats 17 and 18, and a hollow cylinder closed at one end and opened at the other, resting on said seats, the cylinder being provided with a port at one side corresponding with the port in the partition, substantially as set forth.

2. The within-described valve, consisting of an elbow-casing having two branches, a partition in one of the branches providedwith a port 5, and the cylinder V, closed in the Valvecasing and having a single side port corresponding with the port 5, the cylinder being provided with a cross-piece 14 at its end corresponding with the ports 15 of the casing, substantially as set forth.

3. The within-described elbow-valve, consisting of a casing having a partition pro-- vided with'a single port, ports at the end of the casing, a cylinder fitting the casing and provided with asingle valve in its side corresponding with a valve in the partition and with a cross-piece at its end corresponding to the valve in the case, a cap, a spring between the cap and cylinder, an arm connected to the cylinder and provided with means for turning it automatically in one direction, and a connection leading to a distant point for turning the valve in the other direction from name to this specification in the presence of two subscribing witnesses.

WILLIAM R. CARROLL. Witnesses;

O. F. HODLY, I. ZEIGLER'.

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