US459120A - Steam-actuated valve - Google Patents

Description

(No Model.)

H. BEISHEM.

STEAM ACTUATED VALVE.

110.459,120. Patented Sept. 8, 1891.

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UNITED STATES PATENT OFFICE.

HENRY BEISHEIM, OF JERSEY CITY, NET JERSEY.

STEAM-ACTUATED VALVE.

SPECIFICATION forming part of Letters Patent No. 459,120, dated September 8, 189] Application filed June 8, 1891. Serial No. 395,535. (No model.)

To all whom it may concern.-

Be it known that I, HENRY BEIsHErM, of Jersey City, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Steam-Actuated Valves; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the figures of reference marked thereon.

My present invention relates to valves for use on steam-pumps or direct-acting engines, though equally adapted for co-operating with any steam or fluid actuated piston, whether the saine serves as a valve for another or main cylinder or not; and it has for its objects to provide a device that will not only be simple and cheap in construction, but as well one that will not possess the disadvantages of the forms in which the movement of the auxiliary valve tends to move themain valve also, and to these ends consists in certain improvements in construction and combinations of parts, all as will be hereinafter described, and the novel features pointed out particularly in the claims at the end of this specification.

In the drawings, Figure l is a longitudinal sectional view of a steam-engine valve and cylinder embodying my improvements; Fig. 2, a cross-sectional view of the saine; Fig. 3, a horizontal sectional view through the main and auxiliary valves; Fig. et, a side View of the main valve; Fig. 5, a plan view of the auxiliary valve; Figs. 6 and 7, diagrammatic views of the valves in different positions.

Similar reference-numerals indicate similar parts.

In the form of apparatus to which my invention :is shown applied, l indicates a steamcylinder having a piston 2 operating therein, and the port-s 3 and a at opposite ends communicating with the valve cylinder 5, in which operates a cylindrical steam-actuated valve (3t This valve 6 is made hollow, having an opening 7 in its upper side and heads at each end, and on its lower side provided with apertures 8 and D and the passages IO and l1, which control the ports 3 and I and exhaustports I2, as usual.

Near the center of the valve (3 one of its sides is iiattened, and in said flattened side are arranged two steam-ports I3 and Lacommunicating with channels extending to the opposite ends of the valve, said ports being arranged in different horizontal planes, but having a portion of their inner ends in the same vertical plane, as shown, and above said ports is asteam-inlet port l5, opening to the interior of the valve.

Co-operating with the attened part of the piston-valve, sliding at right angles to its line of movement and resting partially upon a seat provided in the valve-casing, is an auxiliary valve IG, consisting, preferably, of a plate provided with two steam-inlet ports 17 and IS, extending through it and adapted to co-operate with port l5 in the main valve, two exhaust-passages terminating in ports I9 and 20, arranged in different planes and adapted to co-operate with ports I3 and I4, and between the two latter a steam-inlet port 2l, passing directly through the valve and also adapted to co-operate with the ports 13 and 14. This auxiliary valve operates in a chamber 22, formed by the main valve and the valve-casing, in which latter is provided a port 23, communicating with the exhaustchamber 24, and with which the lower ends of the exhaust-passages in the valve 16 connect, and it is held to its seat by any suitable device-such, for instance, as springs 40, engaging' a plate ell, sliding on the outer coverplate 25 of the steam-chest.

Any mechanism well known for the purpose may be provided for causing the reciprocation of the auxiliary valve, and as one form I have shown a connecting-rod 27, pass` ing through a suitable stuffing-box and connected by a link 2S with one arm ot' a bellcrank lever 29, the other arm of which is connected by a link 30 with a pivoted rocking piece 3l, arranged on the main pump-frame and adapted to bo struck and tilted in opposite directions by a projection or collar 32 on the main piston-rod, the connection being such that the valve will be shifted at the termination of the stroke of the main piston, as will be understood. The main steam-pipe from the boiler 'is connected with the pipe on the top of the valve-casing, and the steam therefore fills the interior of the valve 6 through an opening 7, and is from thence admitted to the steam-chest in which the auxil- IOO iary valve is located and' then to the ends of the piston-valve. The ports in the main and auxiliary valves are so located relatively to each other that when, for instance, the auxiliary valve is in its lowermost position, as in Fig. 6, the port 17 is in communication with port 15 in the main valve 6, and the steam from the interiorof thelatterwillpassinto the chamber 22, andat the sametimeport 21 is overport 13, permitting the passage of steam to the left-hand end of the valve, and also port l-lis connected with port 20, permitting the steam at the righthand end to exhaust through port 23, with which the exhaust-channel communicates. As the valve 6 shifts, admitting steam to the main piston in the usual manner, the port 15 passes from under port 17, cutting off the steam to the chamber 22 and remaining in position above port 1S in the auxiliary valve, as in Fig. 7, until at the termination of the stroke of the main piston the auxiliary valve is moved upward by the shifting mechanism described, when the port 1S will co-operate with port 15, port 21 with port 1a, and exhaust-port 19 connects port 13 with the eX- haust, permitting the supply of live steam to the ri ght-hand end and the free exhaust from the left, moving the valve to first position and cutting off the supply to the steam-chest, as before.

By the employment of valve mechanism of this description the speed of the main piston can be regulated to a nicety, the movement of the main valve operating asa cut-off when the movement in one direction is completed, at which time the immediate reversal can take place, thereby preventing the possibility of the valves becoming actuated improperly by leakage or by the accumulation of live steam.

My valve mechanism is not only cheap in construction, enabling the parts to be readily constructed and put together, but by reason of the auxiliary valve moving at right angles to the plane of movement of the main valve there is no possibility of the latters being moved by its operation as to cause a stoppage by the improper registering of the ports, as is the case when the parts are insufiiciently lubricated, even if a portion of the auxiliary moves in the same plane as the main valve. As the throttle-valve controlling the main supply of steam to the pump or engine is above the latter, it will be seen that if even a very small opening is left when the ports 15 and 17 or 1S register the steam will gradually move the main valve and cut-off, and when the auxiliary valve is moved communication will be established with the other ports and the main valve moved gradually in the other direction.

While my invention of auxiliary valve and the moving piston is designed especially for use as a valve-motion, it will be understood and inlet ports, and actuating devices for saidv valve, substantially as described.

2. The combination, with the hollow movable piston having the flat valve-seat on its side and provided with the steam-inlet'port and the two ports communicating with opposite ends, of the reciprocating valve moving upon said iiat valve-seat and at right angles to its plane of movement, having the two inlet-ports co-operating with the one in the piston, the exhaust and inlet ports, and actuatdevices for the valve, substantially as described.

3. The combination, with the main cylinder and the piston voperating therein, the valvecasing, the piston-valve operating therein controlling the main piston, having the flat valve-seat on its side and provided with the ports communicating with opposite ends of the casin g, of the reciprocating auxiliary valve operating on the flat valve-seat and at right angles to the plane of its movement, having the exhaust and inlet ports, and actuating devices for said auxiliary valve, substantially as described.

4:. The combination, with the casing, the movable piston having the flat valve-seat on its side and provided with the ports communicating with opposite ends of the casing, of the reciprocating valve moving upon said flattened portion and at right angles to its plane of movement, having the two exhaustports and the inlet-port between them, the exhaust-port in the casing, and actuating devices for the valve, substantially as described.

5. rlhe combination, with the casing, the movable piston having the flat valve-seat on its side and provided with the ports communicating with opposite ends of the casing, and the central steam inlet-ports, of the reciprocating valve moving upon said flattened portion and at right angles to its plane of movement, having the two inlet-ports in different planes, the two exhaust-ports and the inletport between them, the exhaust-port in the casing,'and actuating devices for said valve, substantially as described.

HENRY BEISHEIM.

Witnesses:

JOHN H. Frcxn, WILLIAM F. HEPPENHEIMER.

IOO

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