US659027A - Gas-engine. - Google Patents

Description

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-w. s. HALSEY.

GAS ENGlNE [Application tiled Feb. 1, 1900.1

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No. 659,027. Patented Dot. 2, i900.

W S HALSEY GAS ENGINE.

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Tamm. waswmown u c UNITED STATES PATENT OFFICE.

WILLIAMS. HALSEY, OF PITTSBURG, PENNSYLVANIA.

GAS-ENGINE.

SPECIFICATION forming part of Letters Patent N o. 659,027, dated October 2, 1900.

Application filed February l, 1900. Serial No. 3,565. (No model.)

T0 a/ZZ whom, t 'ma/y concern:

Be it known that I, WILLIAM S. HALSEY, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a certain new and useful Improvement in Gas- Engiues, of which improvement the following is a specification.

The object of my invention is to provide an internal-combustion motor of simplified and comparatively-iuexpensive construction in which a compression and an explosion of the mixture of gas and air shall be effected at each revolution of the shaft and the products of combustion shall be effectively discharged from the cylinder after each Working stroke of the piston. i

To this end my invention, generally stated, consists iu the combination of a cylinder having a solid or imperforate wall between its end ports, a piston working therein, admission-valves controlling the supply of a mixture of gas and air to one end of the cylinder, au independent exhaust-'valve controlling the discharge of products of combustion from the opposite end of the cylinder, and a supply-valve controlling a passage through the piston for the traverse of compressed charges of a mixture of gas and air from the suction side of the piston to the pressure side thereof. y

The improvement claimed is hereinafter fully set forth.

In the accompanying drawings, Figure lis a side view in elevation of a gas-engine embodying my invention with the cylinder and valve-casings in section on the line a, d of Fig. 3; Fig. 2, a view in elevation as seen from the opposite side; Fig. 3, a vertical transverse section through the cylinder and exhaust-valve casing on the lin'e b b of Fig. l; and Fig. 4, a vertical longitudinal section, on an enlarged scale, through a portion of the cylinder and the admission-valve casing.

In the practice of my invention I provide a suitable frame or bed-plate l, upon one end of which a main or crank shaft 2 is supported in bearings in the ordinary manner and to the other end of which is secured a cylinder 3, which is surrounded by a Water-jacket 4. The shell or wall of the cylinder is solid or imperforate between the admission and exhaust ports at its opposite ends, hereinafter specified, and it is closed at its end farther fromthe crank-shaft bya removable head 5, and its opposite end is closed by a head 6, which is preferably formed integral with the bedplate l, as indicated in Fig. 1. yApiston 7 is tted to traverse longitudinally in the cylinder 3 and is secure 8, the opposite end of which is secured to a cross-head 9,`traversing on guides l0 on the bed-plate and carrying a pin 1l, which is coupled by a connecting-rod l2 to a' crankpin'l3 on a crank disk or arm 14, fixed upon the crank-shaft 2.

An admission-valve casing l5 is formed upon or fixed to the cylinder 3 at its end adjacent to the crank-shaft, said casing communicating With the cylinder by an admission-port 16, and an exhaust-valve,casing 17 is secured to the opposite end of the cylinder and communicates therewith by an exhaustport 18. Agas-supply pipe 19, leading from any suitable source of Vgas-supply, opens into the admission-Valve casing l5 and communicates with a valve-cage 20, secured removably therein through ports on the mvalvecage. A passage 2l, leading to the atmosphere, is formed in the outer end of the valve-cage 2O and is controlled by an upwardly-opening air-ad mission valve 22, whichV is normally held seated bya lspring 23. The interior of the valve-cage communicates with the admission-port`l6 by a passage 24, controlled by an upwardly-opening check-valve 25. A lateral nozzle or passage 26 for the connection of an exhaust-pipe leading to a desired point of discharge is formed upon the side of the exhaust-valve casing 17, and communication betweenv said passage and the exhaust-port 18 is controlled by an upwardly-opening exhaust-Valve 27, fixed upon a stem 28. The outer end of theexhaustvalve stem 28 carries a pin 29, which lits in a can1-groove 30, formed in a bar 3l, which is fitted to traverse in a guide 32 on the outer end of the valve-casing 17. The bar 3l is journaled to one end of a doublearmed rocking lever 33, which yis centrally pivoted on the water-jacket 4, and the opposite end of the rocking lever is coupled tfo an eccentricrod 34, which is secured to the strap 35 of an eccentric 36, fixed upon the crank-shaft 2. A supply-valve 37, which opens in the direcupon a piston-rod.

tion of the cylinder-head 5 and is normally I that side of the piston until the piston reaches held seated hy a spring 3S, controls a passage 39, leading from one side of the piston to the other. the crank-shaft 2, and the engine is provided with any suitable known ignitingdevice-as, for example, an igniting-tube 41, located in position to fire a charge on the outer or lefthaud side of the piston 7.

In the operation of a motor embodying my invention the movement of the piston 7 to the left, which is effected by the momentum of the fly-wheel 40, draws in air through the passage controlled bythe air-admission valve 22, and gas is supplied through the gas-supply pipe 19. 'lhe air and gas commingle in the interior of the valve-cage 20, and the resultant mixture passes through the port governed by the check-valve25 and through the inlet-port 16 into the cylinder on 'the righthand or suction side of its piston 7. Assuming a compressed charge of a mixture of gas and air to have been previously supplied to the clearance-space on the left-hand or pressure side of the piston, as presently to be described, such charge is exploded and burned by the igniting device 41, and the resultant expansion of the charge effects the working or right-hand stroke of the piston, which, through its connections, correspondingly rotates the crank-shaft 2 and fly-wheel -l-O. In making its working stroke the piston initially compresses the mixture of gas and air which has been previously admitted to the cylinder on the right-hand or suction side of the piston until the pressure of said mixture becomes equalized with that of the products of combustion on the left-hand or pressure side of `the piston, whereupon the supplyvalve27 is unseated and the charge in the cylinder on the suction side of the' piston passes through the opening therein to the pressure side thereof. At or about the period of such equalization the exhaust-valve 27 is unseated through its connections with the eccentric 3G, and the burned gases are expelled through the exhaust-port 18 and passage 26 by the charge of unburned mixture, which passes to the pressure side of the piston through the passage 39 therein. It will be seen that as the supply-valve 37 opens or unseats automatically when the pressures on opposite sides of the piston become equalized the remainder of the working or righthand stroke of the pistou is eected without back pressure. During the working stroke of the piston the check-valve 25 and air-admission valve 22 are closed by the pressure on their upper sides, and compression of the gas in the supply-pipe 19 or leakage thereof to the atmosphere is therebyprevented. In the succeeding left-hand or compression and suction stroke of the piston the initially-compressed charge of a mixture of gas and air which has been supplied to the pressure side of the piston during the preceding working A fly-wheel l0 is secured upon of the piston is effected.

the limit of its left-hand traverse, when the charge is ignited and another working stroke Gas and air for the next succeeding working stroke are drawn into the cylinder on the suction side of the piston during the left-hand stroke thereof, as first above described.

My invention presents in practice the substan tial advantages ofenablinga working impulse to be exerted at each revolution ofthe shaft, of relieving the piston from objectionable back pressure during its working stroke, and of funlly and elfectually discharging the burned gases and residuum of combustion from the cylinder after each working stroke.

I claim as my invention and desire to secure by Letters Patent- 1. In an internal-combustion motor, the combination of a cylinder having an admission-port at one end and an exhaust-port at the other, and having its wall solid or imperforate between said ports, a piston working in said cylinder, admission-valves controlling the supply of a mixture of gas and air to the admission-port, an independent exhaustvalve controlling the discharge of products of combustion from the exhaust-port, and a supply-valve controllingr a passage through the piston for the traverse of initially-coinpressed charges of a mixture of gas and air from the suction side of the piston to the pressure side thereof.

2. In an internal-combustion motor, the combination of a cylinder having an admission-port at one end and an exhaust-port at the other, and having its wall solid or imperforate between said ports, a piston working in said cylinder, a crank-shaft and flywheel connected to and rotatable by the piston, means for automatically effecting the supply of a mixture of gas and air to the admission-port, means, actuated from the crankshaft, for releasing products of combustion from the exhaust-port, and an automaticallyoperating supply-valve, controlling a passage through the piston and alording traverse for a charge of a mixture of gas and air from the suction to the pressure side thereof, coincidently With the release of the products of combustion from the pressure side.

3. In an internal-combustion motor, the combination of a cylinder having an admission-port at one end and an exhaust-port at the other, and having its wall solid or imperforate between said ports, a piston working in said cylinder, a crank-shaft and fly-wheel connected to and rotated by the piston, an admission-valve casing, communicating, by the admission-port, with the cylinder, on the suction side of the piston, a gas-supply pipe leading into said casing, an air-admission valve controlling an air-inlet to said casing, a check-valve controlling communication between said casing and the admission-port, au exhaust-Valve casing having a discharge-passtroke is further and nally compressed on sageand communicating, bythe exhaust-port,

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with the opposite end of the cylinder, an exhaust-valve controlling communication between said casingrand the exhaust-port, oonnections with the crank-shaft, through which said exhaust-Valve is unseated coinedently with the compression of 2L charge of mixed gas and air by the piston, and a' supply-valve l controlling a passage thrrough the piston and opening toward the exhaust-valve.

WILLIAM S. HALSEY.

Witnesses:

J. SNOWDEN BELL, CLARENCE A. WILLIAMS.

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