US411234A

US411234A - Steam-actuated valve

Info

Publication number: US411234A
Authority: US
Publication date: 1889-09-17
Anticipated expiration: 1906-09-17

Description

(No Model.) 2 Sheets-Sheet 1. W. L. G. WILLIAMS.

' STEAM AGTUATED VALVE.

No. 411,234. Patented Sept. 17, 1889.

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\ ATTORNEYS.

N. PETERS. Pbolo-Lhbogrzplwr. Waifimgton, D. (l

2 Sheets-Sheet 2.

S M m L H W G L W (No Modem STEAM AGTUATED VALVE.

Patented Sept. 1'7, 1889.

ATTORNEYS.

UNITED STATES PATENT OFFICE.

\VILLIAM LLOYD GIBBON WILLIAMS, OF JERMYN, PENNSYLVANIA.

STEAM-ACTUATED VALVE.

SPECIFICATION forming part of Letters Patent No. 411,234, dated September 17, 1889.

Application filed December 12 1888- Serial No. 293,345. (No model.)

To all whom it may concern:

Be it known that I, \VILLIAM LLOYD GIB- BON WILLIAMS, of Jermyn, in the county of Lackawanna and State of Pennsylvania, have invented a new and useful Improvement in Steam-Actuated Valves, of which the following is a full, clear, and exact description.

The invention relates to automatic valves for steam-engines, steam-pumps, &c.; and the object of the invention is to provide a new and improved valve which is simple and durable in construction, very effective in operation, reducing the friction to a minimum, and dispensing with all outside mechanisms for opcrating the valve.

The invention consists of certain parts and details and combinations of the same, as will be hereinafter fully described, and then point ed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a sectional end elevation of the improvement on the line 00 w of Fig. 2. Fig. 2 is a sectional side elevation of the improvement on the line y g of Fig. 1. Fig. 3 is a plan view of the improvement with the steamchest in section. Fig. 4 is a sectional plan view of the improvement on the line .2 .2 of Fig. 1, and Fig. 5 is an inverted plan view of the main valve.

In the cylinder A operates, in the usual manner, the piston B, connected by the pistonrod 0 with suitable mechanism to be driven. On top ofthe cylinder A. is formed a steamchest D, into which leads a steam-inlet pipe E, connected with a suitable source of steam-supply. In the steam-chest D is mounted the main valve F to turn, provided with the arms F and F placed diametrically opposite each other and recessed on their under sides.

From the steam-chest D lead the stea1ninlet ports a. and b to the ends of the cylinder A, and the exhaust-ports c and (I, placed alongside the ports a and b, respectively, lead to an exhaust-channel 6, connected with the em haust-pipe G. The cavities in the under sides of the arms F and F are so arranged. as to connect the ports a c and b (I, respect ively, with each, or to disconnect the said the said piston H in place when sliding forward and backward in the cylinder I. The pin H, before referred to, passes through a slot D in the bottom of the steam-chest D, as is plainly shown in Fig. 3.

From the ends of the cylinder I lead the ports f and 9 into a cylinder .I located below the cylinder I and in line with the same. In this cylinder J is held to slide longitudinally a second auxiliary piston K, provided with a pin K extending through a longitudinal slot in the cylinder J and serving to hold the piston K from turning when moving forward or backward in the cylinder J. Alongside the ports f and g are arranged the ports f and g, respectively, also leading from the cylinder I to the cylinder J. The ports f f and g g are adapted to register with the ports h and 2 formed in the piston K, and arranged in such a manner that when the port h registers with the port f, as shown. in Fig. 2, the port t' registers with the port g,'while the ports f and g are disconnected. The ports 7L and t' are also adapted to register with the ports 7c and n and the ports Z and 0, respectively, of which the ports To Z lead from the cylinder J into the cylinder A, while the ports a and 0 connect with the exhaust channel 6-, as is plainly shown in Fig. l. From the ends of the cylinder .I also lead the ports 19 and q into the ends of the cylinder A.

The operation is as follows: \Vhen the machine is in the position shown in the drawings, the live steam entering through the pipe E passes into the steam-chest D, and from the latter through the open port 1) into the righthand end of the cylinder A. The piston B is thus propelled in the direction of the arrow a, and when it nearly reaches the end of its stroke it uncovers the port 70, so that the steam in the cylinder A can. pass through the port 70, the port 71 in the second auxiliary piston K into the port f, and from the latter into the left-hand end of the cylinder I, thereby forcing the auxiliary piston H in the direction of the arrow Z), whereby the pin II of the said piston, acting on the arm F of the main valve F, turns the latter in the direction of the arrow 0, so that the port a, is uncovered and disconnected from the exhaust-port 0, While the inlet-port b is covered and connected with the exhaust cl. The live steam now passes through the port a into the left-hand end of the cylinder A, so that the piston B is propelled in the inverse direction of the arrow ct',whereby the port 19 is uncovered and live steam rushes through the port 1) into the left-hand end of the cylinder J, whereby the second auxiliary piston K is moved to the right in the direction of the arrow Z), so that the port 77. is disconnected from the ports f and 7c and co'nnects the ports f and n with each other. At the same time the port 1' disconnects the ports g and 0 and connects the ports g and Z with each other. The exhaust-steam in front of the piston B passes through the port I) and the cavity in the arm F into the exhaust-port cl, and from the latter through the channel 6 into the exhaust-pipe G. WVhen the piston B, traveling in the inverse direction of the arrow at, nears the end of its stroke, it uncovers the port Z, so that the live steam passes through the said. port Z to the port t and the port g into the right-hand end of the cylinder I, so that the first auxiliary piston II is shifted to the left in the inverse direction of the arrow 1), whereby the pin 11 again moves the arm F of the main valve F into its former position, as illustrated in Fig. 3. The engine is again reversed as above described. The exhaust from the ends of the cylinder I takes place through the respective ports f and g, connected by the ports hand 01, respectively, with the ports n and 0, leading to the channel 6, as illustrated in Fig. 41-, and above described. The exhaust from the cylinder J takesplace through the respective ports qand 19. Thus it will be seen that by the peculiar arrangement of the auxiliary piston II with the main valve F the latter is automatically changed so as to reverse the movement of the piston B whenever it comes to the end of its stroke.

1. In a steam-actuated valve, the combination, with a cylinder and its piston, of a steamchest communicating with the cylinder, an oscillating valve in the steam-chest, and an auxiliary piston below the steam-chest and connected with the said valve, the said auxiliary piston being operated by live steam from the cylinder, substantially as described.

2. In a steam-actuated valve, the combination, with a main valve mounted to turn and provided with an arm, of an auxiliary piston operated by live steam from the cylinder and provided with a pin engaging the said valvearm, substantially as shown and described.

3. In a steam-actuated valve, the combination, with a main valve mounted to turn and provided with an arm, of an auxiliary piston operated by live steam from the cylinder and provided with a pin engaging the said valvearm, and a second auxiliary piston actuated by live steam and controlling the motion of the said first auxiliary piston, substantially as shown and described.

4. In a steam-actuated valve, the combination, with a cylinder and a piston operating therein, of a steam-chest provided with inlet and outlet ports, the former leading to the said cylinder, a valve mounted to turn in the said steam-chest and operating over the said ports, an auxiliary piston connected with the said main valve for turning the same, and an auxiliary cylinder controlling the said auxiliary piston and in communication with the said cylinder, substantially as shown and described.

5. In a steam-actuated valve, the combination, with a cylinder and a piston operating therein, of a steam-chest provided with inlet and outlet ports, the former leading to the said cylinder, a valve mounted to turn in the said steam-chest and operating over the said ports, an auxiliary piston connected with the said main valve for turning the same, an auxiliary cylinder containing the said auxiliary piston, a second auxiliary cylinder held parallel with the said first-named auxiliary cylinder and connected with the same by inlet and outlet ports, and also connected by ports with the main cylinder, and a second auxiliary piston held to slide in the said auxiliary cylinder and provided with ports for connecting the said exhaust and inlet ports of the second auxiliary cylinder with the said main cylinder and with the main exhaust-ports,

substantially as shown and described.

WILLIAM LLOYD GIBBON WILLIAMS. Witnesses:

JOHN D. SHERER, WM. S. HUTOHINS.

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