US700777A - Carbureter. - Google Patents

Description

No. 700,777. Patented May 27, |902.

E. R. INMAN. 3'

GARBURETER. (Application led Apr. 19, 1899. Rene`wed Oct. 2, 1901.)

(llo Model.)

mi mams PETERS c'o.. PHoToLnuc.. WASHINGTON. u. c.

UNITED STATES PATENT OEEICE.

EDWARD R. INMAN, OF TIPTON, INDIANA.

CARBURETER.

SPECIFICATION forming part of Letters Patent No. 700,777, dated May 27, 1902.

Application filed April 19, 1899. Renewed October 2, 1901. Serial No. 77,316. (No model.)

To all whoml it may concern:

Be it known that I, EDWARD R. INMAN, of Tipton, in the county of Tipton and State of Indiana, have invented new and useful Improvements in Carbureters; and I do hereby declare the following to be a full, clear, and exact description of said invention, reference being had to the accompanying drawing, and to the figures of reference marked thereon, which forms a part of this specification.

My invention relates to improvements in carbureters to be used in connection with gasengines and will be fully understood by a reference to the accompanying drawing, in which the figure is a central vertical section.

The same figures of reference indicate identical parts throughout the drawing.

The object of my invention is to provide a 'carbureter by means of which the combusted exhaust products of a gas-engine are utilized for the purpose of heating the carburetingchamber and the oil which is introduced therein for the purpose of forming gas and vapor.

I am aware that many forms of carbureters are in use which employ the exhaust of a gasengine as the heating agent; but all of these, so far as I am aware, are intricate constructions, consisting of hot plates or a series of pipes which are difficult and expensive of construction and are objectionable in the fact that the plates or pipes aforesaid so occupy the carbureting-chamber that not enough space is left for gas, thus causing the ready supply of such gas to be meager and insufficient, and, further, that the air-passage through such pipes or plates is so circuitous that the efficiency of the gas-engine which is supplied by the carbureter is greatly reduced because of the impossibility of obtaining a sufficient charge through passages that are thus obstructed. To overcome all of these difficulties and objections is the object of my invention.

My device consists of a carbureting-chamber 1,.located within a larger chamber,which is termed the exhaust-chamber, 2. The walls l of the carbureting-chamber converge toward the bottom or downwardly, so that a conical chamber is formed with the smaller area at the bottom. Around the outside of and at a short distance below the top edge of the Walls 1 is formed an annular horizontal flange 3, and thus a dam 4 is formed by that portion of the wall l which extends above the flange 3.

Above the carbureting-chamber is placed a cover 5, which has at its lower edge a horizontal flange 5', which is coincident in diameter with flange 3, on which said flange 5 sits. The inner diameter of cover 5 is several inches larger than the outer diameter of dam 4., so that a trough 6 is formed between the outer face of dam 4 and the inner wall of cover 5. Trough 6 is the initial receptacle for oil as it enters the carbureting-chamber through a pipe introduced at the port 17. As the trough becomes filled with oil said oil overiows daln 4. in a thin equal sheet, and thence down the converging Walls of the carbureting-chamber 1 and is heated by the walls l', which walls receive their heat from the combusted exhaust products of a gas-engine as they enter chamber 2 at the port 7, into which port 7 the exhaust-pipe of a gas-engine is introduced. By this construction the walls alone of the carbureting-chamber are caused to heat the oil by direct contact therewith, and to thus perform the functions which, according to the best of my information and belief, have heretofore been accomplished by a complicated series of plates or pipes of various forms and combinations. Hence the comparative simplicity of my device is obvious, a simple, free, and unobstructed carburetingchamber being one of the valuable features of my invention. As the exhaust enters port 7 it meets the pointed diverging conical bottom 8 of the carbureting chamber, which point is located centrally over port 7. By this construction the exhaust is evenly deiiected about the chamber l, and its walls l are thereby uniformly heated. As a further means of causing an equal distribution of the exhaust about the walls of the chamber l the escape-port 9 at the top of the exhaustchamber 2 is of considerably greater circumference, but equal in its combined area, to the area of port 7, which necessitates the'escape of the exhaust throughout the entire area of said escape-port 9 and further serves to cause the exhaust to impinge closely about the exterior walls of the carbureting chamber,

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whereby the heat of the exhaust is utilized to the fullest extent. Port 9 communicates with an annular channel 10, extending entirely around the outside of chamber 2 and beneath trough 6, whereby heat is also applied to the bottom of said trough for the obvious purpose ofheatiug the oil at this point. A port 11 is formed in the outer wall of channel 10 for the iinal exit of the exhaust.

In cover 5 are formed two ports 12 and 12', which serve as an inlet for free air and an outlet for carbureted air and either of which may serve the respective purposes specified.

From the bottom of the carbureting-chamber 1 a pipe 13 leads through the wall 2 of the exhaust-chamber, said pipe being the means whereby oil is withdrawn from the carbureting-chamber.

For the purpose of heating the carburetingchamber preparatory to starting an engine gasolene may be poured into the bottom of the exhaust-chamber 2 through the opening 14, provided for this purpose, then ignited and permittedlto burn, when the walls of the carbureting-chamber 1 will become sufficiently hot to generate gas when oil is introduced into said chamber.

The outer wall of channel 10 is provided at its upper edge with an outwardly-projecting annular flange 15, which flange is equal in diameter to flange 3 of the carbureting-chamber and also to ange 5 of the cover, said flanges respectively forming the means wherebyv the various portions or elements of my device are secured together by the bolts 1G.

When my device is attached to a gas-engine for operation, the inlet air or gas port to the cylinder of said engine is put in communication with the carbureting-chamber' by means of a suitable pipe leading'into port 12 or 12', and as air is drawn through the chamber 1 a sufficient amount of vapor is mingled with it to produce an explosive mixture and suitable operating medium for a gas-engine.

It should be understood that the oil to be used with my device should be of a volatile nature and preferably crude petroleum fresh from the well and of at least 38 gravity. Such oil is introduced to the receiving and distributing trough 6 through the pipe at 17 and as said trough becomes filled the oil iiows over the dam il in a thin and equal sheet and down the converging walls 1' of the generating-chamber, which oil thus becomes heated and vaporized, and the vapor rises into the cover 5 (the space in the cover being understood as being included, practically, as a portion of the generati u g-chamber) and there mingles with the air as it passes through the ports 12 and 12.

It will be readily seen that by the construction herein shown and described a carbureting-chamber may be formed of ample capacity, efficient in operation, and the passage of air through the same is easy and unobstructed. My device also serves as an effectual muffler to the noise of the exhaust of a gas-engine, the escape-port 9 at the top of the exhaust-chamber being the main feature which conduces to this end in that it causes a dissipation or separation of the body of the exhaust in such a manner that the inal escape of said exhaust into the atmosphere is comparatively gradual or prolonged over what it would be were it permitted an unobstructed escape, and, further, the exhaust being compelled to escape through the whole area of the escape-port 9 (by reason of the area of said escape-port being equal to the area of port 7 aforesaid, by way of which the exhaust enters said chamber) that portion of the exhaust which makes its exit through port 9 at or nearest the point of location of port 1l escapes earliest to the atmosphere, While that portion of the exhaust which makes its exit through port 9 at the farthest point from port 11 escapes latest to the atmosphere. It is therefore evident that the exhaust is so dissipated as to be deprived of its force and detonation as it escapes to the atmosphere.

Having thus described my device, what I claim as new, and desire to secure by Letters Patent, is

1. In a carbureter for gas-engines, an open, unobstructed carbureting chamber with downwardly-converging walls, air-ports leading to and from said carbureting-chamber, a receiving and distributing trough located at or near the top of the converging Walls of said carbureting-chamber, means of introdu cing oil to and withdrawing same from said carbureting-chamber, an exhaust-chamber of larger diameter than, and receiving said carbu reting-chamber, an annular escape-port at the top of said exhaust-chamber, an annular channel formed about the top of said exhaust-chamber, into which said escape-port leads, a port in the outer wall of said channel, means of admitting the combusted, exhaust products of a gas-engine` to said exhaust-chamber, means of generating preliminary heat in the exhaust-chamber, about the walls of the generating chamber; all constructed, combined and operating substantia-lly as shown and described.

2. In a carbureter for gas-engines, a carbureting-chamber with downwardly-converging walls, an oil receiving and distributing trough located at the top of said carbureting-chamber, a cover superimposed above said carbureting-chamb'er, ports in said cover, adapted for the passage of air therethrough, an exhaust-chamber adapted to receive and envelop said carbureting-chamber, a port leading to said exhaust-chamber, a passage leading from said exhaust-chamber of greater circumference than and of the same area as said inlet-port, all constructed and combined substantially as shown and described.

3. In a carbureter for gas-engines, the combination of an exhaust-chamber, an inlet-port leading to saidchamber, an escape-port leading from said chamber, an annular channel formed about said exhaust chamber with IOC IIO

In testimony whereof I affix my signature in presence of two witnesses.

EDWARD R. INMAN.

which said escape-port communicates, a port communicating from said annular channel to the atmosphere; all so combined, located and proportioned as to deaden or muffle the sound of the exhaust of the gas-engine to which said carbureter is attached, substantially as shown and described.

Witnesses:

IRA M. OBANION, SOPHIA WOODRUFF.

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