US533754A

US533754A - Elliott j

Info

Publication number: US533754A
Authority: US
Publication date: 1895-02-05
Anticipated expiration: 1912-02-05

Description

UNITED STATES ATENT @rrrcn.

ELLIOTT J. STODDARD, OF DETROIT, MICHIGAN, ASSIGNOR TO THE H. C. HART MANUFACTURING COMPANY, OF SAME- PLACE.

GAS-ENGINE.

' EIEEGIEIGATION forming part of Letters Iatent No. 533,754, dated February 5, 1 895.

Application filed May 3 l. 1 8 94:,

To all whom it may concern:

Be it known that I, ELLIOTT J. STODDARD, of Detroit, in the county of 'Wayne and State of Michigan, have invented a new and useful Improvement in Gas-Engines, of which the following is a specification.

My invention relates to gas engines, and consists in the improvements hereinafter described and pointed out in the claims.

Referring to the accompanying drawing, the figure is a vertical longitudinal section of so much of a gas engine as is neceessary to illustrate my invention.

Aisa cylinder closed at both ends. B is the piston in said cylinder.

0 is the piston rod, D the connecting rod, E the main shaft, and F the fly wheel of the engine.

G is a drum concentric with, and immovably connected to the fly wheel F.

H is an arm pivoted upon the shaft E next to the druinG.

The connecting rod D is pivoted at one end to the free end of the arm H.

I is a clutch which permits the arm H to turn in a positive direction around the shaft E, independent of the drum G, but prevents any independent turning of said arm with reference to said drum, in the other direction.

J is a reservoir for compressed air.

K is a port leading from the reservoir J.

L is a valve covering the port K.

j is a valve case covering the port K and valve L.

M is a hand screw passing through the valve case j, and adapted to adjust the tension of a spring m, which spring acts to press the valve L against its seat.

N is a check valve covering a port '12- which port communicates with the cylinder A, at the opposite end to that with which the port 10 connects.

Q and R are hand screws by which the tensions of springs q and) maybe adj usted, which springs act to press the valves N and P respectively against their seats.

W is a carburetor.

T is a pipe connecting the interior of the valve case j with the port p, and U V w are pipes connecting the interior of said case wit the carburetor W and with the port a. A

Serial No, 513,068. (No model.)

portion of the compressed air passes through the pipe U and carburetor W, in the latter of which it becomes impregnated with combustible vapor. Another portion of said air passes through the pipe V, and mixes with the portion that has passed through the carburetor W, to form an explosive mixture. The cock in the pipe V is used to vary the size of the passage through said pipe and thus regulate the proportion of air that shall pass through said pipe.

I have not shown nor described the pump by which the supply of compressed air is kept up in the reservoir J because this is well understood, and forms no part of this invention. For the same reason I have not shown or described the inlet and exhaust valves of the engine.

The operation of the above described device is as follows: Air is compressed by a pump (not shown) and forced into the reservoir J, say at sixty pounds absolute. From the reservoir J the air may pass to the port N through pipes U, to, V, being carbureted and converted into an explosive mixture on its way. From the same reservoir compressed air may pass to the port 19 through the pipe T. The compressed explosive mixture is admitted behind the piston B, and fired, driving the piston 13 forward, compressing and storing up the work of said explosion in the air before said piston. On its return stroke, the piston B receives its impulse from the air that has been compressed before it, and gives out the work that has been stored in said air to the main shaft E through the clutch I and drum G. The pressure of the air at the port 19, and of the explosive mixture at the port it, is equal to the pressure of the air in the reservoir J, minus the pressure of the spring in. The pressure of the explosive mixture above the valve N, is equal to the pressure below said valve minus the pressure with which said valve is acted upon by the spring q. The pressure of the air above the valve P is equal to the pressure below said valve minus the pressure of the spring 1'. Now, if the fill chamber and the space in front of the piston B are so proportioned that the piston B makes a stroke of the required length under the impulse of the explosion, the work the engine is able to do may be increased or diminished by turning the hand screw M, thus increasing or diminishing the pressure .in both ends of the cylinder A to the same 1. The combination with a gas engine in which the energy of the explosion is stored up in aspring, of means adapted to vary the amount of explosive charge andstrength of said spring in the same-proportions, suhstan tially as shown and described.

2. The combination with a gas-engine in which the energy of the explosion is stored up in a spring, of means adapted to vary the amount of the explosive charge and the strength of said springin varying proportions, substantially as shown and described.

3. In a gas-engine, the combination of a cylinder A closed at bothends, a reservoir J of compressed gas, a pipe U V communicating with the cylinderA-at one end, a pipe T coinmunicating with said cylinder at the end of said cylinder opposite to that with which the pipes U V communicate, a valve L adapted to close the passage way between said reservoir and the pipes U, V, T, the spring m, acting to press said valve upon its seat against the pressure of the air in said reservoir, and means foradjusting the tension of said spring.

4*. In a'gasengine the combination of a cylinder A,closedat both ends, a reservoir of compressed gas J, pipes U, V and T communicating with opposite ends of said cylinder, and with said reservoir, a valve N or P in each of said pipes, a spring q or r, acting to close said valve against the pressure of i said gas, and means for adjusting the tension of said spring, substantially as shown and described.

5. In a gas engine the combination of a cylinder A,'closed at both ends, a reservoir of compressed gas J, pipes U, Vand T, communicating with opposite endsof said cylinder andwith said reservoir, a valve N or P in each of said pipes, a-sprin'g q or r acting to close said valve against the pressure of said gas, means for adjusting the'tension of said spring, a valve Lin the passage Way between both of said pipes and the reservoir J, a spring an acting to close the valve L against the pressure of spring m, substantially as shown and described.

ELLIOTT J. STODDARD. iVitnesses:

HENRY B. Lornaor, AMELIA J. WILLIAMs.