US228051A - Change-valve - Google Patents

Description

(llodeL) J, FOWLER. Change Va-lv es.

No. 228,051. Patent d-Mans,- 188(1).

INVENTOR ATTGRN 5v WITNESSES 1 N. PETERS, PNOTD-LITNOGRAPHER, WASHINGTON, D. Q

. U ITED STATES PATENT OFFICE.

JOHN FOWLER, or LOUISVILLE, KENTUCKY.

CHANGE-VALVE.

SPECIFICATION forming part of Letters Patent No. 228,051, dated May 25, 1880. Application filed April 10, 1880. (Model) T 0 all whom it may concern:

Be it known that I, JOHN FOWLER, of Louisville, in the county of Jeii'ersou and State of Kentucky, have invented a new and valuable Improvement in Gl1ange-Valves; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part (f tlns specification, and to the letters and figures of reference marked thereon.

Figure 1 of the drawings is a representation of a longitudinal section of my improved char ge-valve'. Fig. 2 is a detail view of the operating-shaft and its arm.

TllS invention has relation to means for changing the direction of a flow of steam, gas, liquids. or other substances; and it consists in the construction and novel arrangement of the vrive-chests and valve-seats, the reciprocating se.f-adj ustin g valves and their rodconnection, and the cran k-shifter and its operatinghandle also, in the combination, with the valve-stem, of a loose or sliding valve, all as hereinafter fully shown and described.

In the accompanying drawings, the letter A designates the valve-box having the flanged opening B, whereby it may be connected to a pipe. At each end of the valve-box openings G are made, and internally threaded to receive theflanged valveseats D and E, the latter having usually a recess, F, and a shoulder-seat,.G, as shown in the drawings.

H H designate the main valves, which are provided with guide-stems I K, which pass through the guide-openings a b of the valveseats. These valves are maintained at a proper distance from each other by a rod, L, which extends by its ends into recessescof the valves. The ends of the rod fit loosely in these recesses, and are secured by pins (1, so that a little play is allowed to each valve, sufficient to enable it to adjust itself squarely on itsseat and close the opening.

In order to move the valves to and frobetween their seats in the valve-box, a crankshifter, R, is employed.- This consists of a rod or shaft, 0, passed through a close or packed bearing, f, in the valve box, and having a double arm or. shifting projection, g, which plays between the valves H H, usually upon the connecting-rod L. The outer end of the shaft 0 is provided with an operating armor crank, h, by moving which either of the valves can be brought against its seat, its fellow being at the same time lifted or moved away from its seat. In this manner the flow by the opening B through the valve-box may be directed at will through either valve-seat opening 0. Sometimes a sliding valve, S, is employed, especially when there is pressure in the chamber or receiver connected with the flanged valve-seat E, this valve being loosely arranged on the stem K of one of the main valves connected with the shifter, and being designed to close against the seat G automatically. The object of this valve is to close the opening to the receiver when the pressure in the valve-box is relieved by thereaction of the pressure in the receiver against said valve, forcing it against its seat.

This shifting or change valve may be used for various purposes, but its principal object is as follows When connected with a still in a distillery the engineer can use the exhauststeam from his engine without being under the necessity of notifying any one to close the main valves when he desires to stop his engine. In this connection the valve S will close automatically on account of the pressure in the still, thereby preventing any liquid or matter returning through the pipes into the engine. When used for other purposes not requiring an automatic valve the valve S may be omitted in the construction.

I am aware that a pressure-regulating valve has been arranged with an operating-shaft and weighted crank-arm to hold one of two opposite valves to an outer seat, said valves being connected by a rigidly-attached stem; and I do not claim such devices, my valves being arranged between the seats and kept to seat by pressure of the water or steam.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The change valve consisting of the box A, having openings B G and crank-shifter R,

journaled in the box, and having the arm g,

provided with jaws, the valve-seats D E, the self-adj usting valves H H between said valveseats, and having guided stems, and the consliding valve S on the long stem K, substan- 1o nectingrod L, freely seated in recesses in said tially as specified.

valves, all constructed and arranged to oper- In testimony that I claim the above I have ate substantially as specified. hereunto subscribed my name in the presence 2. The change-valve consisting of the box of two Witnesses.

A, having the openings B O and the valve- JOHN FOWLER.

seats D E G, the self-adjusting valves H H, Witnesses:

their guided stems I K, and loosely-connected AL. AINSLEE,

rod L, the crank-shifter R, and the automatic THOS. W. MORAN.

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