US415978A - Carburetor for gas-engines - Google Patents

Description

(No Model.).

D. S. REGAN.

GARBURETOR FOR GAS ENGINES.

No. 415,978. Patented Nov. 26. 1889.

UNITE STATES PATENT OFFICE,

DANIEL REGAN, OF SAN FRANCISCO, ASSIGNOR TO HIMSELF, AND SANFORD S. B INNETT, OF ALAMEDA, CALIFORNIA.

CARBURETOR FOR GAS-ENGINES.

SPECIFICATION forming part of Letters Patent No. 415,978, dated November 26, 1889.

Application filedApril 7 1888.

To all whom it may concern.-

Be it known that I, DANIEL S. REGAN, of the city and county of San Francisco, State of California, have invented an Improvement in Carburetors for Gas-Engines; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to improvements in carburetors and their use especially in connection with an explosive-vapor engine.

It consists in certain details of construction, which will be more fully explained by reference to the accompanying drawin gs,in Which Figure l is a vertical section taken through a a of Fig. 3. Fig. 2 is a perspective view of the exterior of the carburetor. Fig. is a horizontal section taken through (Id of Fig. 1. Fig. 4 is a view showing the connection of the carburetor with the engine.

The object of my invention is to provide a device for charging atmospheric air with the vapor of a light hydrocarbon liquid and transmitting this vapor directly to the engine-cylinder, within which it is ignited and exploded, so as to propel the piston of the cylinder, said piston acting as a pump during alternate strokes, by which a sufficient quantity of air is drawn into the carburetor by thevacuum produced by the movement of the engine-piston to form a single charge for the engine, the carburetor ceasing to act immediately upon the stopping of the engine.

A is the exterior casing of the carburetor, having an extension or chamber C in the center of its upper portion. The top of this chamber C is covered by a flexible diaphragm D, which may be made of anysuitable flexible materialas leather or parchment-and which serves by its flexibility to relieve the apparatus from the sudden vacuum which would otherwise be caused by the stroke of the en- Serial No. 270,007- (No model.)

near the bottom, leaving a small space beneath the lower edges of the convolutions of the spiral, through which the liquid contained in the carburetor may pass freely and be constan tly maintained at an even saturation throughout the apparatus. The liquid is introduced into the chamber through a fillingnozzle, as shown at F, and is maintained at a sufficient depth to fill from one-half to twothirds of the chamber E is a pipe extending into the top of the chamber A and having its lower end very near the bottom of the chamber and beneath the surface of the liquid. This pipe is placed at the outer end of the spiral, and when the engine is in motion air will be drawn into the carburetor through this pipe by the stroke of the engine-piston. This air being delivered beneath the surface of the liquid causes a considerable agitation, and by its ebullition through the liquid it becomes charged with the vapor, While its passage over the surface of the agitated liquid, following the channels made by the spiral, will complete its saturation, so that when it has reached the center, where it is delivered upward into the chamher or extension C,'it is sufficiently saturated for the purposes of the engine. At each stroke of the piston, when the valve is open to allow the cylinder to receive a charge, vapor is d rawn into the cylinder from the chamber C, and a corresponding amount of air is drawn through the pipe E into the carburetor, the chamber 0 being thus supplied with successive charges during the operation of the engine only. It will be seen that by this construction the air is drawn through the apparatus by means of the vacuum produced by the engine-piston, and that there is no chance for leakage by forcing the vapor out through any openings in the carburetor. The pipe E acts as a seal to prevent any return of the air which has been drawn into the apparatus, and the flexible diaphragm D acts as a relief, vibrating easily with each stroke of the piston. The amount of air drawn into the carburetor at one stroke passes into the engine-cylinder at the next stroke, and it will be manifest that only so much air is carbureted at each time as will serve for the following stroke of the engine-piston, the operation ceasing instantly when the engine stops. By this construction the carburetor becomes automatic in its con nection with the engine.

Having thus described my invent-ion, What I claim as new, and desire to secure by Letters Patent, is

In a carburetor, the combination of the cylinder of a reciprocating engine, a circular closed chamber, a spiral diaphragm or partition having the upper edges forming a tight connection with the top of the chamber and the lower edges terminating above the bottom so as to leave a comm unicating space beneath,

an air-entrance pipe at the outer end of the spiral extending down into the liquid and serving as an agitator and seal, a vapor-chamber above the central portion of the chamber and spiral, having a flexible diaphragm over its top, and an ediiict-ion-pipe connecting this chamber with an engine-cylinder, substantially as described.

DANIEL S. REGAN.

Witnesses:

J. H. REDSTONE,

F. R. BRAUN.

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