US741224A - Carbureter for explosive-engines. - Google Patents

Description

PATENTED 00T. 13, `1903.

lE. F. CLARK. CARBURETER EUR -EXPLOSIVE ENGINES.

APPLICATION FILED 00T. 9, 1902.

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wf WW No. l741,224.

UNITED Sterns Patented october 13, i903.

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EDWIN F. CLARK, OF CLEVELAND, OHIO.

SPECIFICATION forming part of Letters Patent N o. 741,224, dated October 13, 1903.

Application filed October 9. 1902. Serial No. 126,581. (No model.)

To all whom t may concern.-

. Be it known that I, EDWIN F. CLARK, a citizen of the United States, residing at Oleveland, in the county of Cuyahoga and State of Ohio, have invented new and useful Improvements in Carbureters for Explosive-Engines, of which the following is a specification.

The invention relates to improvements in carbureters or vaporizers used upon gasolene or hydrocarbon engines to effect the mixture of the air and gasolene-vapor introduced into the engine-cylinder upon the feeding stroke of the piston.

The object of the invention is to provide a device of this character which lis simple in construction, durable in use, and very efficient in operation, a further object being' to provide means whereby the amount ofgasolene admitted upon each stroke of the piston may be quickly varied or cut off entirely without affecting the inlet of air.

With these and other objects in View, whic will appear as the nature of the invention is better understood, said invention consists in certain novel features of construction, combination, and arrangement of parts which will hereinafter be fully described and claimed, and illustrated in the accompanying drawings, in which Figure 1 is a vertical sectional view through the improved carbureter. Fig. 2 is a horizontal section on the line 2 2 of Fig. 1.

Referring more particularly to the drawings, the numeral 1 designates the casing which forms the walls of the mixing-chamber 2, in which the air-inlet and the outlet for the mixed gases are formed and in which the regulating-valves are located. The inlet 3 for the air may be screw-threaded for connection with a pipe leading from the usual source of hot-air supply or may be opened to the atmosphere at any point, and the outlet 4 for the mingled air and gasolene-vapor is also screw-threaded for connection with a pipe leading to the cylinder of the engine. The top of said casing is closed by the cover 5, in which the gasolene-inlet 6, screw-threaded for connection with a pipe leading from the source of gasolene-supply and the gasolene-passage 7 are formed. The amount of gasolene passing through said passage may be regulated or cut off entirely by the needle-valve 8.

Within the casing 1 is a concentric partition or wall 9, inclosing a valve-chamber 10. The

gasolene-valve 11 is in the form of a piston 12, 5 5

slidably mounted in the chamber 10, the said piston being provided with a point or needle 13, which is adapted to close the lower end of the passage 7 and to act as a spreader for the gasolene. the stein 14, which slides in the guide socket or boss 15, formed in the bottom of the casing 1, and a coil-spring 16, surrounding said boss and stem, has one of its ends bearing upon the under side ofthe piston and its other end bearing upon the bottom of the casing to force said piston and needle upwardly to close the gasolene-passage 7.

In the wall or partition 9, on a line with the air-inlet 3, are formed the ports or passages 17, which afford communication between the upper portion of the mixing-chamber 2 and the gasolene valve-chamber 10. Similar ports or passages 1S afford communication between said chambers below the piston-valve 11. The ports or passages 18 are adapted to be closed or partly closed by a valve 19 inthe form of a sleeve or collar slidably mounted upon the wall or partition 9. The valve is adjusted The piston or head 12 is guided by 6o by means of the operating-rod 20, secured to 8o the sleeve by a screw, and projects through the bottom of the casing 1 upon the outside. A coil-spring 21 surrounds said rod between the sleeve and the bottom of the casing and exerts its energy to hold said valve raised to keep the ports 18 open. Stops 22 upon the outside of the sleeve 19 are adapted to contact with similar stops 23, formed upon the inside of the walls of the casing in order to limit the upward movement of said valve.

The valve 19 may be held in adjusted position by means of a set-screw 25, arranged to be moved into and out of engagement with rod 20.

In the operation of the device when the feeding stroke of the engine-piston takes place the suction on the bottom of valve 12 caused by the forward movement of the engine-piston will draw down the valve 12 and open valve-point 13, thus admitting gasolene through passage 7, and the air and gasolene-vapor will flow through the mixing-chamber and thence to the cylinder of the engine. The instant the suction is removed from the bottom of the IOO valve 1'1 on the return stroke of the piston of the engine the tension of the spring 16 will return the said valve to its normal position and close the gasolene-passage '7. By means of the rod 2O the valve 19 may be operated to regulate the size of the ports or passages 18, and hence to regulate the amount of suction upon the bottom of the piston 12 of the valve 11 and the degree of the opening of the passage 7 by the point or needle 18. It will thus be seen that the amount of gasolene admitted at each stroke of the piston may be easily varied without interfering with the inlet of the air.

From the foregoing description, taken in connection with the accompanying drawings, the construction, mode of operation, and advantages of my invention will, it is thought, be readily apparent.

Various changes in the form, proportion, and minor details of construction may be made without departing from the principle or sacrificing any of the advantages of the invention.

Having thus particularly described my invention, what I claim, and desire to secure by Letters Patent, is-

1. A carbureter or vaporizer, comprising a casing inclosing a mixing-chamber, an inner wall or partition within said casing, inclosing a valve-chamber, said chambers being in communication through ports or passages formed in said inner wall, an air-inlet to said mixingchamber, an outlet for said mixing-chamber, a gasolene-inlet to said valve-chamber, a sliding piston in said valve-chamber, carrying a valve-needle adapted to close the gasoleneinlet, a sliding sleeve mounted upon said inner wall and adapted to cut oii the communication between the mixing-chamber and the valve-chamber, below said sliding piston, and 4o means for operatin g said sleeve, substantially as set forth.

2. A carbureter or vaporizer, comprising a casing inclosing a mixing-chamber, an inner concentric wall orpartition within said casin g, 4 5

inclosing a valvechamber, said chambers being in communication through ports or passages formed in said inner wall at its upper and lower ends, an air-inlet to said mixingchamber, an outlet to said mixing-chamber, 5o

a cover for said mixingchamber, having a gasolene-inlet formed therein, a valve in said cover for regulating the flow of gasolene through said inlet, a sliding spring-actuated piston in said valve-chamber, provided with 55 a valve-needle upon its upper end adapted to close the lower end of the gasolene-inlet in said cover, and provided with a guide-stem upon its lower end adapted to slide in a guide vsocket or boss, a sleeve slidably mounted upon 6o said inner wall and adapted to close the lower ports or passages in said wall to cut oft the communication between the mixing-chamber and the valve-chamber below said piston and an operating-rod carried by said sleeve and 65 extending through the casing, substantially as set forth.

' In testimony whereof I have hereunto set my hand in the presence of two subscribing

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