US1393366A - Carbureter - Google Patents

Description

R. l. HENDERSON.

CARBURETER. APPLICATION FILED 1UNE23l I920- ]Patented Oct. H, 1921., V

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To all whom it may/ concem;

i l I lnw nj HEN- nnnsoN, a subject of the King of Great ain and-resident of the city of Toronto, county of York, Province ofOntarm, n the Dominion of Canada,haveinvented certain new and useful I mprovernentsf in Car buretersgas described inthe following specification and illustratedin'the accoinpanyii g drawings, that form part of the same. .The principal objects of the invent-ionare to Jaccurately and definitely regulate the of fuel according toj the speedfof the engine 1 to effect a thorough carburet on thereofland to greatlysimplify theccnstrucf tion and manipulation of the 'carbureter.

1 A further objectisItoQdispensejwith the use of a float regulatedsupply. i f The principal feature of the invention consists in the novel construction of the fuel distributing member whereby a series of discharge openings are progressively uncov eredand covered according to the opening and closing of the throttle, thereby definitely regulating the supply of fuel according to the speed of the engine.

A further and important feature consists in supplying heating means to the fuel ClIS' tributer and in the novel constructionof the carbureter whereby the fuel is drawn directly to the distributer through the supply to the suction means. l a

In the drawings, Figure 1 is a plan view motive fluid supply at the end Adjacent to the end 3 and within the chamber 2 is arranged a filter formed of a plurality of very fine screens 41 before which is arranged a a chamois leather 5, which screens and leather prevent the passage of impurities such as dirt and water to the interior of the carbureter. i

A chamber 6 is arranged at the forward end of the filter and a suitable drain. cock is connected thereto to drain off any water and dirt'which may accumulate therein. 7

At the inner end of the chamber 2 a l a Specificatiqn of Letters Patent.

I .ratemeaoeairiaai. 19gb. Serial are. 391,075. r

member 9 and is slidable thereonand its outer surfacefis preferably formed with an a very small arr ngement of rjck teeth 12 which extend circumferentiallyithereof.

A throttle valve 13'is pivotally arranged within the air passage 8 adjacent to the nozzle 9 and upon the throttle valve is arranged a toothed quadrant 14, the teeth of whichmeshwith the teeth 12of the sleeve 11 so that as the throttle valve is turned on its pivot thesleeveis moved on the nozzle 9 to cover or uncover the holes 10. The sleeve is so arranged in relation to the throttle that when the throttle is wide open the maximum number of holes is exposed and when the throttle is closed all but the outer one or two holes. in the nozzle are closed, such holes providing sufficient fuel to allow the engine to idle.

As the throttle is turned to increase the flow of air the quadrant engages the toothed sleeve and slides it to uncover the holes in the nozzle progressively. The flow of air pastthese holes picks the small particles of fuel from the surface as they 'extrude through the holes and a very thorough atomization is effected.

The suction within the air chamber caused by the engine draws the motive fluid from the chamber 2 and such suction continued back to the supply tank carries the fuel.

. without the necessity of any other form of feed.

A choke throttle 15 is arranged at the outer end of the body 1 and this choke throttle operates in unison with the main throttle 13, said throttles being connected .outside of the body by means of the coil spring 16 connected to the arms 17 and 18 of the throttle spindles. I

The choke throttle is provided with an operating arm 19 which enables it to be regulated independent of the main throttle the nozzle.

', In order to create the very best conditions for carburetion it is desirable to heat themotive fluid'and: this may be acco1nplished very effectively by forming the nozzle 9 of resistance metal and passing an electric current therethrough.

This carbureter is extremely simple in its construction and in operation when the throttle valve is closed a suflicient amount of motive fluid for the idling of the engine escapes from the outermost. holes in the nozzle. I s

U pen the opening of the throttle the quadrant 14 moves the sleeve 11 on the nozzle to open the holes in the diametrically arranged rows alternately. This alternate arrangement of the holes in the opposite rows allows practically a continuous increase in the fuel discharge openings as the sleeve is operated. The feed of the fuel is therefore very positive and is exactly proportioned to the throttle opening. The size and spacing of the holes will (if course be proportioned to give the best results.

The choke throttle operates in unison with the main throttle so as to insure a proper suction within the carbureter chamber to draw the motive fluid from its source of supply. The motive fluid is thoroughly filtered in passing through the screens arranged in the chamber 2 and there will be very little possibility of any interference with the How of fluid through the nozzle.

A screw plug 24 is preferably arranged in the outer end of the nozzle to allow its being cleaned.

What I claim as my invention is In' a carbureter, the combination with the body having an air passage therethrough and a throttle controlling said passage of a tubular nozzle extending transversely of said passage and having discharge openings through the wall thereof, a sleeve encircling a portion of said nozzle within the air passage and slidable thereon and adopted to control said discharge openings, and means rigid with said throttle arranged within the air passage and directly engaging said sleeve to move itlongitudinally on the nozzle as the throttle is turned.

ROBERT IRWIN HENDERSON.

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