US815712A - Carbureter for explosive-engines. - Google Patents

Description

fJoiiN HOWARD JOHNS/Ton, or mais, -rnai-Noia-` lSpec'ziication of Letters Patent. Patented March 20, 1906.

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To all wiz/omit may concern: y y j Be it known that I, JOHN'HOWARD JOHN- sToN, engineer,"a citizen of theV UnitedStatesk of America, residing at 145Rue de la Pompe,

yParis, in the Republic of Francahaveinvvented certain new and useful Improvements 'in Carbureters vfor Explosive -Engines, of .which the following is a-specification.

This invention relates to a carbureter'for explosive-engines so equipped as to allow of obtaining an explosive mixture the richness of which willalways remain the saine what-vever may be the lspeed of the engine. n l gIn principle this carbureter comprises a regulating hollow piston which surrounds a) .spray-pipe and the inner Wall of which is'conver'g'ent, so Vthat .the sectionjof the annular.

rpassage prodi/iced around tlie orifice of the spray-pipevaries according to the position of the piston. .On the other hand, the wall of the f'latteris provided with apertures jlor the passage oi the air-and is surroumled-for a part of its length by a ring, so that the air coming in.

atA one end of' the wallo'l the piston is caused l to move out at the other end atter having passed around the spray pipe or nozzle. Ac-

cording to the position given to the regnlaty ing or adjusting' piston, thc air 'finds through the'apertures olf the latter, and through thel annularv space iorni'ed around the oriiice of' the sprayjpipe passages o'lless ory greater section, soy thatthe speed at which itpasses around the or'lice ol" the spray-pipc can be regulated at will and at' a -predeteiinined amount, lwhich remains4 always the saine at whatever speed the engine ruiming. As the richness oi" the explosive mixture depends, essentially, on the speed at which the air passes around the orilice oi." the spray-pipe, the resultis that the coniposition ol'` the mixture can thus be rendered constant, the elliciency Aol the engine being greater on that account.

Reference isto be had to the accompany- Jing drawing, which shows in section one ein'- bodiinent oi." this invention, and in which-- a designates a spray-pipe to which oil is ied from' a lateral reservoir l) (in which the level of'theoil remains always the same) through a lower pipe c. Around the said spray-pipe is arranged a hollow piston (L, the

' inner Wall d of which -is of conical shape and provided with several crowns ol apertures lm m"l 'mf 'm4 'm5, opening through the outer wall dit, which is ol' cylindrical shape '.lhe said pist/(ai isn guided by a cylindrical ring c,

which extendsv .apart of the length of the i' v'saine and forms a portion of wider casingf.

vOne end of the 'latter is secured around the base of the spray-pipe and has lateral apertures or openings for the entrance of the -air from without, while theother end of the casing is connectedwith the suction valve or valves of an engine by-one or more pipes g.

- The piston d is provided with a rod h passing through the casingf and which vis capable of being moved by any suitable mechanism operated by hand. lThis mechanism must comprise stop-notches, a graduation, or the like to allow of the driver of the engine bringing the piston (Z at `once into-any predeterminedposition.

In the positionshown in the drawing, and which corresponds to that in which the engine is ruiming idly,the piston is in close proximity to the spray-pipe, and the air coming in through the apertures f,m, and 'm5 can only move`out through the small' outlctfi in the base of the piston.

When Vthe engine is running at -a determined spced-say attwo hundred revolutions the piston is so moved as to bring the apertures m/ abovel the ring e." The air then 4 the same and through the apertures mi, passes round the spray-pipe, and thenout through g the apertures m. llie diameter of the passage around the critico of the spray-pipe is indicated at 1 l. When the engine is running at Afour hundred revolutions, for instance, the piston isso movedv as .to bring the apertures m2 above'the ring e. The air coming into the piston through the lower orifice of the same circulates around the spray-pipe and 'passes out through the aliertues-'m/ and m2.` 2 2 show the diameter ol'f the corresponding assage .for-ined around the spray-pipe. Itwi lbeundei-stood that as the speed of theengine has doubled with respect Ito that of the previous case the quantity oi' air sucked in has also doubled, andas, on the other hand, the Section of the passage. around the orifice of the y enters the piston through the lower oriilce of t IOO spray-pipe has become double what it was Y also the speed ol the air in that section is the saine as it was before; Likewise il" the speedof the engine is incriatsed up to six hundred, eight hundred, one thousand revolutions, thevpiston will be so moved as to uncover successively the apertures mi* m4 m5 in such ak manner asto maintain the speed o'l the aii" always the saine when passing around' the oriliee ol the spray-pipe.

. requirements, as

vergent shape so long as it retains I It will of course be understood that -the numbers given above arenot absolute in any Way. I

The number and the dirnenslons of the ap.- ertures m to m5 may be varied according to well as the thickness of the solid zones k, which separate the crowns of apertures. These solidl zones serve to cause all the air sucked in to' rise up as far as the orifice of the spray-pipe before 'moving into the thickness of the wall of the piston and before movi'r g away from the said walls. Furthermore, they break up the gaseous veins and insure an intimate mixture of the air and the explosive vapors. Their thickness may be very small. On the other hand, the apertures m to m5 are shown as' being straight through the wall of the piston; but they ,may pass through the said wall-in any inclined direction.

4Instead of being exactly conical the inner wall of the piston may be of some other conthe general principle of construction set forth.

claim` 1. In a carbureter, the combination of a spray-pipe, of a hollow piston around the spray-pipe, having an inner wall conical in shape and lateral a ertures, of a ring surrounding aportion ofpthe length of the piston, and of means for position of the piston with respect to the spray-pipe and the said ring.

n a carbureter, the combination of a spray-pipe, of a hollow piston around the spray-pipe, having an inner wall of conical A'shape and lateral apertures, the said apertures being arranged in several crowns separated by solid ortions; of a ring surrounding a portion o the length of the piston; 'and of means for regulating or setting the position of the piston with respect to thespraypipe and to the said ring.

3. A earbureter having an outer casing, a

adjusting or regulating the liquid-fuel nozzle discharging thereinto, and a regulating member adjustable in the casing anal inclosing'the nozzle, said member 'having a conical interior form and openings through its sides, the adjustment of the regulating member serving to cover or uncover one or more of said openings, whereby to re ulate the movement of the carbureted alr through the carbureter.

4. 'carbureter havingv an.. outer casing with inlet and outlet openings respectively adjacent to its end portions,'al liquid-fuel nozzle projecting into the casing, said casing lhaving an enlarged interior above the fu'elnozzle ad jacent to the discharge-opening, and` a' regulating member movable in the casing and surrounding the nozzle, said regulating member having openings therein at different points aloiw its lergth, whereby the position of the member in the outer casing determines lthe amount of air permitted to flow through the carbureter.

5. A carbureter having an outer casing with inlet and outlet openings respectively adjacent to its end portions, a liquid-fuel nozzle projecting into the casing, said casing having an enlarged interior above the fuel-nozzle adjacent to the discharge-opening, and a regulating member movable in the casing and surrounding the nozzle, said regulating memberhavin g openings therein at different points along its length, whereby the position of the member in the outer amount of air permitted to How through the earbureter, and the regulating member having tapered or converging interior walls, for the purpose specified. In testimony that I claim the foregoing as my invention l have signed my name in presence of two subscribing witnesses.

JOHN HOWARD JOHNSTON. Witnesses: HANsoN C. CoxE, MAUnicE Roux.

easing determines the

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