US810883A - Reversing-valve for hoisting-engines. - Google Patents

Description

NL-isloaa. PATELLTBD JAN. 2a, 1906.

' J. L. FILLING. v

RBVBRSING VALVE PoR HoIsTLN'G ENGINES. APPLIUATION FILED I'EB. 19. 1903.

2 SHETS-SHEET 1.

alf/MEME@ l Mmmm l PM z m amm-nm PATENTND JAN. 2,3, 1906.

J. L. FILLING. REVBRSING VALVE PoR HolsTING ENGINES.

APPLICATION FILED YEB.19, 1903.

2 SHEETS-SHEET 2.

Hiorneys.

UNITED sTATEs PATENT OEEICE.

JAMES L. PILLlNG, OF PORT HURON, MICHIGAN, ASSIGNOR TO PILLING AIR ENGINE COMPANY,

OEl DETROIT, MICHIGAN, A CORPORATION.

REVERSING-VALVE FOR HOlSTlNG-ENGINES.

Specification of Letters atent.

Patented Jan. 23, 1906.

Application filed February 19,1903. Serial No. 144,080.

To all whom, it 11i/ay concer-7b:

Be it known that I, JAMES L. PILLING, a citizen of the United States, residing at Port Huron, county of St. Clair, State of Michigan, have invented a certain new and useful Improvement in Reversing-Valves for Hoisting- Engines; and I declare the Jfollowing to be a full,clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to a controllingvalve for hoisting-engines, and has for its object an improvedvalve and actuating device therefor which is adapted for use with a double-cylinder hoisting-machine in which the power cylinders are contained in the hoisting-head.

The valve is one which may be turned to admit air from a common source of supply to both of two engines in a way to actuate both ofsaid engines in both directions. The exhaust from the engines passes out through the same valve through a port that is opposite to that through which the actuating-air is admitted. Each port is used at times for actuating-air and at times for exhaust. Provision is also made to turn the valve so that the engines may act and allow a weight that has been lifted to descend by gravity and actuate the mechanism which is generally used for lifting purposes, but which must be allowed to move when the weight is descending by gravity unaided by force applied through the engines. Provision is also made to actuate the valve manually and hold it during the action of the engine, because the engine opcrates either directly for lifting or in a reverse direction for lowering under conditions such that if the valve is not held manually in a condition to direct the air-current and cause the engine to operate the valve will return to a neutral position. A

In the drawings,Figure 1 is avertical crosssectionof lthe hoisting-engine. AThe section is longitudinal of the shafts on which the hoisting-pulleys are mounted. Eig. 2 is a detail view longitudinal of the axis of the valve. This figure shows the valve and the bushin@F which forms the valve-seat. Fig. 3 is an elevated section of the valve on line l) b. Fig. 4 is av section across the axis of the valve and the casing or bushing in which it is seated. This section is taken at the line :1; of Fig. 2 and is on a larger scale than Fig. 2. Fig. 5 is a front elevation of the hoisting device. Fig. 6 is a diagram indicating the passages from the controlling-valve to the engine intake-valves. Fig. 7 is a detail of the valve showing a small port.

The engines A and B in Fig. 6 are oscillating engines, and the piston-stems a and b are connected to crank-pinC upon the main driving-wheel c. Each engine is provided with intake-ports through bearing-surfaces that surround one of its trunnions, and each engine is provided with an adjustable plate 91, which is adjusted by means of a projecting toothed head 1 to vary the introduction of air and for the proper timing of the introduction of air into the cylinder. The main passage for air into the controlling-valve is through the pipe 2. (Seen in Fig. 5 and indicated in ig. 6.) -This passage leads through a casing 3, which houses an oscillating controlling-valve V, and a bushing D, that forms the seat of the valve. The casing and the bushing are provided with several orifices, of which one orifice forms a continuation or mouth of the passage through the pipe 2, and this orifice is indicated at 2 in the drawings, especially in Fig. 4. The orifices 6 and 8 furnish the communication between the valve-chamber in which the valve rotates and the passages which lead to the engines, and of these the orifice 6 communicates with the pipe 7 and with the passage therein contained and leads to both engines and the oriiice 8 communicates with the passage through pipe 5 and also leads to both engines. third orificeSl can register with a passage through the casing to the external air. fourth orifice registers with a passage through that part of the casing against which the smaller end of the conicalvalve V engages and forms a communication between an exhaast-cavity in the valve and the outer air and has direct communication from the valve chamber through passage `61 and through muflier 62 with the outer air. The passages 5 and 7 communicate with chambers in which the valves at the trunnions of the engines A and B oscillate, and they are alternately induction-passages for the motor fluid of the engines and eduction-passages or exhaust-passages for the spent fluid from the engines. When in the position indicated in Fig. 6, the passage 5 is an induction-passage serving to conduct motor fluid from the pipe 2 through the chamber 4 and thence to both engines, and when in this position the passage 7 is an exhaust-passage serving to conduct exhausted fluid from both engines through the casing into the cavity r and thence through the pipe 61 and muffler 62 to the air. The valves upon the trunnionplates 91 are properly actuated to produce this result by the oscillation of the engines, and this need not be further described. because this does not enter into the present invention.

i The valve V within the casing is hollow or provided with a cavity into which leads a passage 20 and a passage 80, and between these passages a portion of the wall of the valve serves at times to close the passage 2 and at times is shifted to open the passage 2, bringing either the passage 20 or the passage 8O into register with the passage 2, and when either is in register with the passage 2 the other is in register with the proper opening through the casing, the passage 20 registering with the passage 6 and the passage 80 registering with the passage 8. The body of the valve is also provided with a groove 81, properly located to act as an exhaust-passage for motive fluid flowing through the passage 8 at times when the cavity 60 is shifted to just open an exhaust through the passage 6 and while the portion of the valve-body between passages 20 and 80 is still in position to close the passage 2. When the valvebody is in this position with the passage 2 closed and both engines having communication with the exhaust, one through the regular exhaust-channel and the other through the auxiliary exhaust-channel 81, the pistons of the engines can reciprocate without resistance of incoming live motive fluid, and the hoistingengine can be utilized to allow of the descent of the falling weight or load which can be impeded or braked by a manipulation of the valve to regulate the exhaust from the two engines. he valve is made as a conical valve and is provided on its forward or external end with suitable stem connections that project through packing devices P, and a forked handle of two branches 50 and 51 is secured to the stem connections. The forked handle is a rock-lever fulcrumed on a shaft 52, which comprises the endv of the stem of the valve V, and it is provided with rock-arms 53 and 54, each of which has journaled at its extremity a friction-roll, both of which rolls bear on a vertically-reciprocating cross-head 55, and the cross-head rests on a spring 56, sustained in a pocket 57 on the front of the hoisting device. The lower end of the spring rests on a screw-plug 40. Either branch 50 or 51 of the* forked lever may be swung and when swung will turn the valve V correspondingly. The valve is arranged and adjusted so that a downward swing of one of the arms will allow an inflow of air or whatever other motor fluid may be used to produce a reciprocation of the pistons and cause a rotation of the rotative parts of the hoisting device. A downward swing of the opposite arm produces motion in the other direction, provided the swing be sufficient to bring the necessary orts into register. A shorter swing of the ever 51 will bring the groove 81 into register with the passage 8 and allow exhaust thro ugh the passage 8 and through the groove 81 and allow the gravity of a weight which has been lifted, but which it is now desired to drop, to actuate the engines without the loss of air. If both arms 5() and 51 be relieved from all pull or weight, the spring 56 brings them to a position of equilibrium with the valve closed, so that there is no passage either for feed or exhaust of air.

What I claim is- 1. In a controlling-valve for a hoistingengine, in combination with a plurality of motors, a passage connected with each for the conduct of Huid thereto and for its withdrawal therefrom, a valve-casing connected with said passage, and a valve rotatable therein, said valve having in its face a plurality of passages, two arranged to register with complementary orifices in said casing, and one adapted to permit the exhaust from said motors to pass therethrough and be discharged at one end of said valve, substantially as described.

2. In a controlling-valve for a plurality of engines, a valve-seat provided with an orifice for the admission of motive fluid and with `orifices for the exit-passagel of said motive fluid, a valve rotating in said seat and forming with the walls thereof a passage adapted to register with either of the exit-orifices, that portion of the periphery of said valve adjacent to the containing-walls being adapted to close the inlet-orifice when there is no registration with said exit-orifices, a groove in said valve in position to register with an opening through the bushing when the motive-fluid inlet is closed, and a passage to the open air, substantially as described.

8. In a reversing-valve for a plurality-of engines, the combination, with a plurality of motors, of a valve-casing, fluid-conducting passages 5 and 7 connecting the same, a conical-valve member rotatable within said casing, said member having on its surface depressions adapted to register with said passages 5 and 7, and other depressions 20 and adapted to register with inlet-orifices in said casing, substantially as described.

4. In a reversing-valve for a plurality of engines, a casing provided with a plurality of orifices, a plurality of`motors, a plurality of IOO IIC

fluid-conducting means connecting said orithe other end adapted to communicate With ices and said motors, a valve member rotatathe exhaust-passage from the engine. 1o ble Within said casing, said member having: In testimony whereof I signthis specificain its surface a plurality of passages adapted tion in the presence of two Witnesses. i to register With a portion of said orifices, and JAMES L. FILLING. other passages adapted to register with other Witnesses: orifices said Valve member provided With a JAMES REYNOLDS, passage opening at one end thereof and at DAVID C. MOELROY.

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