US687273A

US687273A - Valve-controller.

Info

Publication number: US687273A
Application number: US66152397A
Authority: US
Inventors: George J Schoeffel; Charles A Marrder
Original assignee: SIGNAL AND CONTROL Co
Current assignee: SIGNAL AND CONTROL Co
Priority date: 1897-12-11
Filing date: 1897-12-11
Publication date: 1901-11-26
Anticipated expiration: 1918-11-26

Description

no. 687,273. Patented Nov. 2 6, i901.

' Y a. J. scHoEFFAEL & c.. A. MARRDER.

VALVE CONTROLLER.

(Application led Dec. 11,1897.)

2 Sheets-Sheet I.

2 Sheets-Sheet 2.

Patented No-v. 26, |901, G. J. SCHDEFFEL yS C. A. M'ARRDER. vALvE coNTnoLLEn l//\ (Application med neef 1 1, 17897. LN o M o d ag THE NOHS PETERS C0. PNOTOLITHO., WSNINGYDN, D4 C.

UNITED STATES PATENT OFFICE.;

, GEORGE J. SCHOEEEEL, OE BROOKLYN, AND CHARLES A. MARRDER, OE NEW YORK, N. Y., AsSIGNORs, BY DIRECT AND MESNE ASSIGNMENTS, TO THE SIGNAL AND CONTROL COMPANY, OE BOROUGH OE MANHATTAN, NEW4 YORK, N. Y., A CORPORATION OE WEST VIRGINIA.

VALVE-CONTRO LLER.

SPECIFICATION forming part of Letters Patent N o. 687,273, dated November 26, 1901. Application led December 11, 1897. Serial No. 661,523. (N IDOCSL) To aZZ whom it may concern:

Beit known that we, GEORGE J. SCHOEFFEL, residing at Brooklyn, in the county of Kings, and CHARLES A. MARRDER, residing at New 5 York city, in the county of New York, State of New York, citizens of the United States,`

have invented a certain new and useful Improvement in ValveControllers, of which the following is a specification.

Io The object of our invention is to provide a valve-controlling device which may be readily and effectivelyoperated from a distance and which device will not possess the disadvantages of apparatus of that character heretofore in use. In apparatus of this character it has been customary to provide a main valve with an auxiliary controlling-valve, which auxiliary valve was operated by an electromagnet controlled from a distance. We have 2o found in practice that the magnet required for this work must he quite large, and hence considerable battery-power is required. This is not only objectionable because of the num,- ber of cells required, but also for the reason z 5 that the battery is too liable to run down and become ineitective. This is particularly objectionable where the magnets are controlled by automatic circuit-controllers for 'periodica ally closing the circuit to the magnets and pe- 3o riodicallyopening and closing the main valve. In the latter case it is evident that when the valve is periodically operated for a considerable time the battery strength will be materially decreased and become insufcient to 3 5 operate the electromagnetic valve-controller. To overcome this difficulty, we provide in place of the electromagnetic valve-controller a controller employing iiuidfpressure, either air, gas, or liquid. In such an arrangement 4o the controller may operate entirely by airpressure or entirely by liquid-pressure or by a combination of air and liquid pressure. Such a controller may be combined with the auxiliary valve in several Ways. In one form of our invention we provide a small cylinder having a piston provided with a rod, which engages the valve-stem of the auxiliary valve and which cylinder is connected with the airsupply through a suitable controlling-valve,

which may be either a hand-operated valve or an automatically-operated valve. Instead of this arrangement we may combine the aircylinder and piston with the auxiliary valve in the same structure, the air-chamber of. the auxiliary valve being connected wit-h the airsupply through a controlling-valve, as in the valve and its auxiliary valve, the latter being operated or controlled by the fluid-pressure controller; Fig. 2, a vertical sectionof a main valve and its auxiliary valve and showing the latter combined with the pist-on of the Huid-pressure controller; Fig. 3, a horizontal central section of the valves shown in Fig. 2, and Fig. 4t is a plan view illustrating the ar rangement in which the piston which operates the auxiliary valve is actuated by a liquid column moved by a piston or equivalent device actuated by air-pressure.

Referring to Fig. 1, A indicates the mainvalve chamber, B the pipe leading to the inlet side of the valve, and C the pipe extending from the outlet' side of the valve. D is the auxiliary valve for controlling the main valve. This auxiliary valve may be constructed as shown in Fig. 2 or may be of any other suitable construction in which the valve-stem d projects from the valve-casing imposition to be actuated by the pneumatic operator.` The pneumatic operator comprises the cylinder E, having a piston e and a rod e', which rests upon the valve-stem (l. The cylinder E is supported from the main valve by a bracket e2. F is the air-supply pipe connected between the upper Side of the cylinder E and the controlling-valve G. From the controlling-valve G a pipe H extends to the air-supply, which may be a tank of any suit,

able'form in which air is contained under Figure l is a plan viewillustrating a main .for controlling communication between pressure. The controlling-valve G may be of any suitable construction, but preferably one provided with an exhaust-port to allow the compressed air in cylinder E and pipe F to expand to its normal pressure when the controlling-valve G is closed, and thereby permit piston e to ret-urn quickly to its normal position, and hence a quick return of the auxiliary valve to its normal position. In the drawings we have illustrated a simple form of rotary valve, having a passage g for opening communication between pipes F and H and a passage g' for opening communication between pipe F and the exhaust-port g2. The. exhaust is normally open, as shown, and the rotation ot' the valve in either direction will close the exhaust-port, and a quarter-turn will open communication between pipes F and H. The air-pressure entering the cylinder E drives the piston e downward, which through its rod e' operates the auxiliary valve. The operation of this valve permits the opening of the main valve through the pressure in the pipe B, as is now well understood. The main valve A will remain open so long as the pressure upon the piston c is maintained.

Referring now to Figs. 2 and 3, A indicates the main-valve chamber, having a valve A', carried bya valve-stem A2, upon which stem is also a piston A3, working in the chamber A B is the inlet side of the main valve, and C the outlet side, as in Fig. l. D is the auxiliary-valve chamber, and this chamber has a port d', which communicates with the inlet side of the main valve, and a port d2, which communicates with the chamber A4 to the left of piston A3. The auxiliary valve comprises two valves d3 and d4, the former the ports d' and d2 and the latter for controlling communication between the port d2 and the exhaust-port d5. In the position shown in Fig. 2 valve cl3 is open and d4 closed, and thus steam from the inlet side of the main valve is free to enter the chamber A4 and act upon the left-hand side of the piston A3, the pressure upon which balances the pressure upon the right-hand side direct from the inlet side of the valve, and thus the pressure upon the valve A' from the inlet will hold that valve to its seat and shut off communication between the pipes B and C. To open the main valve, the stem d of the auxiliary valve is actuated so as to open valve d4 and close valve cl3, thus shutting ott the flow of steam from the inlet side of the main valve to the chamber A4 and permitting the escape of steam from the chamber A1 through the exhaust-port This action removes the pressure from the left-hand side of the piston A3, and the pressure upon the right-hand side of the piston overbalances the pressure upon the valve A', whereupon the valve will open and remain open so long as there is no pressure upon the left-hand side of the piston A3. To operate the auxiliary valve in this construction by air-pressure, we provide the air-chamber E', in which is a piston e, mounted upon the upper end of the valve-stem d. The air-supply pipe F is connected with the air-chamberE', and thus when air under pressure is admitted to chamber E' piston e will be forced downward, operating valves d3 and d4 to effect the opening of the main valve A', as above described, and valves Z3 and d4 will be held in that position so long as the pressure upon the piston e is maintained. When the pressure upon the piston c ceases, the steam-pressure from the inlet side of the main valve will raise the auxiliary valves and return them to the position illustrated in the drawings, at which position communication between ports d' and d2 is restored and the exhaust-port d5 closed. In the arrangement of Fig. 2 it will be understood, of course, that the pipe F leads to a controlling-valve G, which controls the airsupply, as in Fig. l. Instead of operating piston e, as described, the same eit'ect may be accomplished by exhausting the air from the chambers E and E' at the under side of the piston, producing a vacuum and permitting the atmospheric pressure upon the upper side of the piston c to effect the operation of the auxiliary valves. For this purpose it will be understood that the cylinders E and E' will be connected with a suitable air-pump, and a controlling-valve will be provided in the pipe between the cylinders E and E' and the pump.

Referring now to Fig. 4, A is the mainvalve chamber; B, the pipe leading to the inletside of the valve; C, the pipe extending from the outlet side of the main valve, and D the auxiliary valve. The auxiliary valve is operated by the piston 1' and rod 1l' working in cylinder I. From chamber I extends a pipe F' to the cylinder J, containing a piston J', normally seated at the lower end of the cylinder. Between the piston and cap J2 is a spring J3 for returning the piston to its normal position. Cap J 2 is provided with a bearing a: for rod y, which guides the piston in its movement. Cylinder I, below piston 1', pipe F', and cylinder J, above piston J', are lled with a suitable liquid, such as glycerin or other non-freezing oil. Piston J is actuated by air-pressure delivered from the source of supply through pipe H, connected to the controlling-Valve G'. This valve may be similar to valve Gr of Fig. 1 and connected with cylinder J bya pipe in the same manner as cylinder E and valve G are con nected by pipe F in Fig. l; but we prefer to combine the cylinder J and rotary Valve G' into one structure. This valve has a passage g for opening communication between pipe II and port g3, opening into the bottom of cyllinder J, and a passage g' for opening com; munication between the port gS andthe exhaust-port g2. I/Vhen valve G' is rotated to open communication between pipe I-I and cylinder J, the air-pressure will force piston J' upward, thereby moving the liquid and IIO forcing piston t' upward, which in turn, through its rod i', operates the auxiliary valve. When valve G is turned back to its normal position, the air-pressure is 'cut off and the exhaust-port is opened, whereupon piston J will be moved quickly to its normal position by spring J3 and the weight of the liquid column. 'lhe pressure upon the auxiliary valve being now removed, that valve Will be free to return to its normal position' auxiliary valve, and means for controllingthe movement of said piston from a distant point, substantially as set forth.

2. The combination of a main valve operated by pressure from Within the valve, an auxiliary valve for controlling said main valve, a piston Working in a cylinder and actuated byiiuid-pressure for operating said Yauxiliary valve, and means for controlling the movement of said piston from a distant point, substantially as set forth.

3. The combination of a main valve, an auxiliary valve for controlling said main valve, a piston Working in a cylinder and actuated by liquid pressure for operating said auxiliary valve, and means for controlling the movement of said piston from a distant point,

' substantially as set forth.

4. The combination of a main Valve, an auxiliary valve for controlling said main valve, a piston Working in a cylinder and actuated by liquid-pressure for operating said auxiliary valve, a controlling device having a liquid-chamber connected with said cylinder, and means for applying pressure to the liquid to actuate the piston in said cylinder, substantially as set forth.

5. The combination With a main valve and an auxiliary valve, of a piston Working in a cylinder and actuated by liquid-pressure for operating said auxiliary valve, a controlling device having a liquid-chamber connected with said cylinder, and a piston actuated by air-pressure for applying pressure to the liq uid to actuate the piston in said cylinder, substantially as set forth. v

6. The combination with a main valve and an auxiliary valve, of a piston Working in a cylinder and actuated by liquid-pressure for operating said auxiliary valve, a controlling device having a liquid-chamber connected with said cylinder, a piston in said chamber actuated by air-pressure for applying pressure to the liquid to actuate the first-named piston, and a hand-operated valve for controlling the air-pressure, substantially as set forth.

7. The combination with a main valve and an auxiliary valve, of a piston Working in a cylinder and actuated by liquid-pressure for operating said auxiliary valve, a controlling device having a liquid-chamber connected with said cylinder, a piston in said chamber actuated by air-pressure for applying pressure to the liquid to actuate the first-named piston, aud a hand-operated valve for controlling the air-pressure, said valve having an exhaust-port to relieve the pressure upon the piston when the valve is closed, substantially as set forth.

This specification signed and witnessed this 1st day of December, 1897.

GEO. J. SOHOEFFEL. CHARLES A. MARRDER. Witnesses:

JAMES H. ScoTT, W. PELZER.