US1126249A - Carbureter. - Google Patents

Description

new and useful lmprovemenris rulers, of which the following is es whereby vaporized petrol or oth n" srerrns Ann Devin iur'rennm, 33.,h1fl3 zsne'c van nrscnrm on nos en sens, cnlnrosnrs.

emsuen'rnn Applies-mun ens Jensen; 5,

To all whom it may concern Beit known um we, Devin Mz'ror fln Jr., and lease VAN MITCHELL, hoeh oil; Jere of the United States, residingeiz Live A geles, in-ihe county oi' Les A i "new of California, have joine tion. V Tins mvenlnon relates to fuel is. vaporized and mixed wi supply to internzil combustion motel well understood by jxhose skilled in she "J, that when such motors oreoperul ngsi high speed there is a tendency is overdrew upon the fuel supply, due to the highly increased suction through illBJHQHlfQlii. or other means: of communication between the motor end the carbureter. This one not only e waste of 'fuel but. roduces imperfect som bustion and smutting oi. the motor Worhing parts and production of ohjectionrihle smoke andunburned products, even producing under certain conditions pre ignitionor ignition before complete compression; eceuse of the over-richnessof the eiiplosive mixture. ln' erder to do away with these ohjectionable working conditions, ,WB have de vised e, carbureterequipped with suitable balancing valve In ehenism the efi'eot uponwhich of such violenelyinereesed suction is to auiomatieelly maintain a proper rel-i between the component-parts of the mixture namely the air and-vapor, thus prei enlcing the over enriching. "The-motor is gthus supv plied at all speeds wihhehe requisilge amount of mixture of thepreperne fiure, v I

The object oftheinventioh "is to provide e carburetor ofjthe perticnler nature stated pointed out in claims.

In the drawing: Figure l is a top plan view. partly' oroken ewey for clearness of .s e'numm is new room.

Pneeneed Jenn 2d, Ilhillh w n, gene! $121,029.

illustration, of a cs-rbureter constructed to embody the invention; and Fig. 2 is a new verse vertical sectional W of the same,- lel l upon the line e Fig 1:

w orrespending parts iboth figures J d by the same referenee'oharucters;

' ing with pertieulhrit v no the ch '1 improved eerbure t-er 'nhody n is shown es corn. Willi a, chamber which s fuel into no u .suiisuhle ml; or source of sup- 'lhe fuel supply ehnniher A, in its spc elfic construction, is not concerned in issues of the invention. The cerhurezer' proper has n tubulur bedy B composed inz the form. illustrated-0f two communicating members, b ends, lzhe member 3) extending lsterelly from his member cfthe wall 3 oi ihefn'iernber c, op eosite the niernher i being; provided. with an inlet duct l eonnnu: at ing with a duct 5 through which fuel from. the chamber A. Une end. of the inhumher 5 is edeptedto be bolted on tothe rneni-, fold. or intake pipe l1, and oerries e throttle valve controlling the passage of explosive mixture Emmi-"the carbur'eter to ivhe inunifold, under auysuituble control.

F designates valve mechanism centre the passage of fuel through the duct the member undlikewise contr ling passage of air into thelnember 6 sh outer end. thereof; said value mechanism includmg is needle valve 6 operating Wllill respect he s suitable seat? at the outlet end of inhe duel; 4, end :a puppet valve 8 applied to a suitable seat 9 at the outer open end of the ill) to play lengthwise in e bushing 10 screwed 4 into'e suitable opening in the easing B, e

compression spring 11 being coiled about theneedle valve between such bushing and a shoulder 12 upon the valve. A compressionedjusting nuh 13 is threaded on to the outer end of the valve 6,\being heldzigainst rotation by the s acedcheelrs ll upon a bracket 15 screwecfto the casing member i), as at 16. Thebrecket 15 has two arms 15 and 15 to the former of which is pivoted udjacenl; to one end, as at 17, a, lever arm-18 having a nose 18 received between the bushing 10 and the nut 13. Another lever arm 19 islnivoteol to the 9.111115 as at 20, and has a short end 20 projecting beneath an adjust- T mg s01 ew 2L; opererivel mounted in die le 'Jfhus,'.increase of suction or held against rotation by I It is manifest that many variationsmay an adjusting nut 18 at the upper end of the stem 21 ot' puppet valve 8. The lever arm 19 is forked, as at 19 and received beneath a sleeve'22,-loosely surrounding the .valve stem 21 and holding one end of a coil 5 ring 23 the other end of which is held lbeneath the nut-18 threaded to the .nppenend of such stem 21 The stem .21 through guide 24! extending the casingB. I p a.

In" use, as increased suction through the manifold/D or other tubular connection and within the casing B, as per-- mitted by the throttle valve E, the puppet plays vertically transversely in valve 8 is influenced-to further leaveits seat, the lever arms 18 and 19 being swung so that the nose 18 tends to move the needle valve 6 farther away from its seat; the two valves thus niqve in step. As the valve stem 21" descends the spring 23 is further compressed betvveen the lever arms l8 and 19, such compression resisting the lowering of such valve stem, and consequently resisting theopening movement of the valves 8 and 6. draft upon the mixture of the fuel, from the chamber A and air admitted past the valve 8, is accommodated by an automatic action of the valve mechanism F tending to oppose extreme unseating of the valve 6 controlling the supply of fuel and the valve 8 controlling supply of air for the mixture. The normal tension of the spring may be varied by manipulatingthe adjusting screw 21, to relatively oscillate the. lever arms 18 and 19; and the normal tension of the spring 11 aii'ecti g the needle valvemay 'be regulated by turning such valve in the nut 13 which is the cheeks 14.

be made from the construction and combination of parts and detailed features disclosed Without departing :t'rom the spirit of the invention.

is 'ereated air inlet valve,

connected lever arms acting oppositely upon said spring and one of which operatively connects said valves.

2. In a carbureter, a fuel inlet valve, an air inlet valve,'a spring opposing the unseating of said valves, and two lever-arms acting oppositely upon said spring and one of which operatively connects said valves; there being means of operative connection between said lever arms.

3. In a carbureter, a fuel inlet valve, an air inlet valve,-'a spring opposing the unseating of said valves, and two lever arms acting oppositely upon said spring and one of which operatively connects said valves; there being means of operative connection between said lever arms, and means for relatively adjusting said lever arms.

4. In a'carburet'er,

a spring opposing the un seating of said valves, and two lever arms acting oppositely upon said spring and one of which operatively connects said vaves; there being means'of operative connexion between said le'ver'arms, and mean for relatively adjusting. said lever arms; said last named means comprising an adji sting screw applied to one of'said lever arm. and bearing against the other on the opposite sides of the fulera thereof.

' In testimony whereof, We have signed our names to this specification in the presence of two srbscribing witnesses.

DAVID MITCHELL, J R. ISAAC VAN MITCHELL.

W itnesses':

' RAYMOND Ivns BLAKESLEE,'

CL VELAND SCHULTZ.

a fuel inlet valve, an i

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