US1107713A - Carbureter. - Google Patents

Description

SCHMD.

w. SHAKBSEBARB, JR, & W.

CARBURLTBR. AVPLLQAUON FILED MARs, 1912.

Patented Aug. 18, 1914.

3 SW'YTS SHEET l,

W. SHAKESPEARE. JR. di W. SGHMID. UHHUETEH.

PPLHATIUN FILED MAR, '2in 15124 1,107,71 3. 'Patented Aug.18, 1914.

I 3 SHEETS' SHEET 3` S u uc mrow Second, to provide WILLIAM SHAKESPEARE, JR., AND WILLIAM SCHMID,

OF KALAMAZOO, MICHIGAN,

ASSIGNORS T0 WILLIAM SHAKESPEARE, JR.. COMPANY, OF KALAMAZOO. MICHI- GAN.

CARBUR'ETER.

Specification of Letters Patent. Application led March 28, 1912.

T0 all whom it may Concern.'

' Be it known that we, filmini SNAKE sPEAnE, Jr., and IVILLIAM Sommo, citizens of the United States, residing at the city of Kalamazoo7 county of Kalamazoo, and State of Michifram have invented certain new and useful lpmprovemiigts in Carbureters, of which the following'is a specification. v

This invention relates to improvements in carbureters.

The main objects of this invention are."

First, to provide an improved carbureter in which the proper relative proportions of `fuel and air are maintained throughout the varying running conditions of the engine. an improved carburetor in which a dry mixture is secured at low speeds.. Third. to provide anr improved can bureter in which the air and fuel valves are simultaneously operated. Fourth, to provide an improved carburetor which is capable of very accurate adjustment for propor- Ationing the air and4 fuel and one in which the proportion is maintained throughout the vscope' of ladjustment of the throttle. Fifth, to provide vin 'a carbureter an improved structure which is not likely to get out o `adjustment or repair in use. Further objects, and objects relating to structural details. will definitely appear from the detailed description to follow. We accomplish the objects of our invention by the devices and means described in the following specication. l

The invention is clearly defined and pointed out in the claims.

A structure which is 'a preferred embodiment of our invention is clearly illustrated in the accompanying drawing, forming a part of this specification, in which:

Figure I is a perspective view of our improved carburetcr. 'F ig. II is an enlarged `vc`rtif^al central section thereof. Fig. III is a perspective view lof the 'interior parts of 'the carbureter removed from the body in' order to better show their ,structure and relation. Fig. IV is a detail horizontal section line corresponding to line Li-i of Fig. II, showing the arrangement of the fuel reservoir and the fioat therein. Fig. V is a horizontal section taken on a' line corres ending to line 5-45 of Fig. II, showing tiie fuel'passag'e from the reskrvoir. Fig. V

lis an enlarged detail section through the primary mixing chamber'taken on a line' corre f yfor the air inlet pipe 69.

Patented Aug. 18, 1914.

Serial No. 686,834.

spending to line 6-6 of Fig.l II. Fig. VII is an enlarged detail section taken on a line corresponding to line 7-7 of Fig. II, showing details of the valve actuating means. Fig. VIII is a detail perspective view of the friction washer Fig. IX is a perspective view of the cam rollers 77 and their supporting ring 78. Fig. X Y' an enlarged detail section on a line corresponding to line 10--10 of Fig. I showing the index, shaft and finger piece for actuating the fuel and the primary inlet valves without actuating the throttle or secondary inlet valve 60. Fig. XI is a detail perspective view of the actuating connections for the cam 71. Fig. XII is a horizontal section taken on a line correspondin to line 12-12 of Fig. II, showing furt er details of the actuating connecti'ons for the cam 71 and also the adjustable stop for the valve actuating means. Fig. XIII is a detailsection taken on a line corresponding to line 13-13 of Fig. XII.

ber 40 and its head 48. Fig. XV is a vertical section taken`on a line corresponding to line 15-15 of Fig. II throu h ig. XVI is an enlarged detail vertical section through the primary mixing chamber and its nozzle. the fuel inlet valve 39 being shown in full lines. Fig. XVII is an enlarged detail vertical section of a modified construction, the modification being in the provisionof a skirt 87 in lieu of the inlet pipe 69.

In the drawing. similar reference characters refer to similar' parts throughout the several views, and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

Referring to the drawing, the body of our improved manufacturing and assembling is preferably formed of the members l and 2 having a passage therethrough constituting the second-ariY mixing chamber and delivery passage of the carburetor. The member 1 is provided with an internally threaded nipple i3 for 'the member 2. The fuel' reserifoir is formed by the cup-like member 4, open at the top and bottom. The body member i. is arranged through on the body member l. The body member 2 is provided with an l inclined shoulder 6 which engages the bot` Fig. XIV is a detail perspective of the mem' the valve 83 carbureter for convenience in v tom ot the mei `ber 4 so that when the member is screwed into the nipple il the meml ber 4 is clamped in place and roaetingr with the bcdy ot the rarhureter forms an annular t'uel chamber or reservoir surrounding the bt d v. A\t one `ide` the restfvvoir member t is provided with an tfl't'set inlet chamber 7 to which the -supply pipe 8 is coluiected. The inlet valve is controlled by the annular float lt) which artsl on the lever l1. the lever beiner pivoted at 11 and slotted at 12 to engage the neck il on the valve.

Yl`he level' 1l forked to embrace the body ot' the earbureter. The arms ot the lever are cupped downwardlyat lil to provide spherical bearings for the tloat. The lever is secured to the float by the pins 14' vertically disposed through the bearings 14. The pins loosely engage the bearing to permit tree tilting;r or rocking' movement. This eonnection for the float and the lever holds the tloat out ot' contact with the walls of the reservoir and permits the roclingor tilting of the float with the changingr fuel level caused by rocking or tilting,Y ot the earbureter. The closure plug' 15 serves as a guide for the stem of the valve .1). The member 1 ot' the body in the structure illustrated, is-

provided with a water jacket 11' having connections 17 and 1S, the object being to supply heated water to the jacket when desired. rThe inlet chamber T oli the carburetcr is provided with a. well-lil e defiression 111 and with a drain cock 20. the screen "21 beingy arranged between the inlet chamber and the reservoir so that the sediment is lbllected in the well or trap 19 and may be drawn otf through the cock 520.

rl`htI body member :2 is provideil with a cross bar havin;- a fuel inlet passage 23 opening into the .t'uel reservoir. The cross bar is provided with a conical the primary air and t'uel inlet member '25. The member 35 is provided with a eonieal head titled into this seat and having' a fuel passage 25 registering' with the passage jfl in the bar. 'l`he meinbei 3 has a nipple 2H at its upper end provided with a eentral seat QT t'or the fuel nozzle The air delivery' passages '2H are grouped about the nozzle as clearly shown in Figs. ll'. Y XVI. The nozzle 2S projects above nipple 2V and is tapered upwardly. earburel'ing rhamber member il() having a ear buretinglr chamber 'll therein is mounted upon the nipple of the member '25 for 1'0 tative adjustment thereon. The fuel nozzle 28 pro'ects into the carbureting' chamber 31 throu the bottom 3Q thereof. The bottom 32 trfthey earburetingr chamber serves as an air regulating valve eoaeting with the nozzle Q8. The primary earburetinglV chamber 31 is provided with a discharge .nozzle ha ving an annular slot-like discharge openingr the 33 which delivers into the main chamber ot' i .wat "il tor l and lthe earbureter which constitutes a mixingy chamber.-that is. the mixture of air and tuel or carbureted air delivered from the l carburetingchamber 3l. when the valve 30 is open, mixed with the air passing that l valve. The nezzle is toi-ined by tlange- like parts 34 and 25 which are suitably spaced l to form the annular slot-like delivery opening for the nozzle. The carbureting.;r chaml ll communicates with lthrough a plurality of ports or openings l Clo. See Figs. ll and XVl. The member lt) is provided with a, cam member 37 which l eoacts with ak eam member 3S on the nieml ler Q5 so that when the member fl() is rotated l it raised Vand lowered. thus admitting and cutting ott' the air. To reduce friction We intel-pose rollers Ti' between the cams. The rollers are Carried by the ring T8 which is sleeved upon the ealn member 38. This also controls the fuel valve I3!) which coacts with the fuel nozzle Q8. The member 30 is secured to the inner end of the tubular actuan ing,r member 40 which is rotatably mounted in a bearing 11 in the cap plate 42 tor the water jaeket 16. The stem of the val ve iii) is threaded into the lower end of the member 4t) so that the fuel valve is not materially atleeted bythe `contractingr and expansion due to heating or cooling of the parts. The stem ot' the valve 331 projects from the member L10 and is provided with an adjusting or linger piece L13.

The actuating member 40 is held yieldingly downward by means of the coiled spring 4--1 which rests upon the collar 45 on the member itt), the upper end of thespring engaging the washer-like bearing member 4G for the thrust bearing balls 4i. The in ner end ot' the bearing 41 constitutes the other thrust bearingy member. On the up- `per end of the member l-10 is a head 4S l grooved at 19 to receive the lugs 50 on thel g member 40 as shown in Fig. XlVi The iler the nozzle clampingnut 51 is threaded :into the upper l end ot' the member 4.0 and clamps the member "1S thereto. See Fig. Il, The actuating` i lever 52 is split at 52 and provided with a i clamping screw 54 so that the lever may be adjustedl to any position desired. The valve IW is retained in its adjusted li positions by the friction washer 55 which i bears against the under side of the tinujer l piece A13 and held in t'rietioual rontact therewith by the spriteY .313. whit h is silated in the head "WQ To prevent the friction I washer 55 from turning?, it is provided with depending tingen4 5T which engage the grooves 't9 in the head 49. The head 4S is `chambered to receive the stop member 5S which has a segmental slot Si) tor the :4to i lug' Til on the actuating' member it). The stop member 5S pivots on the member 40 and is adjusted by means o1 the adjusting screws 80. See Fig. XH. lVlth the parts thus arranged, by means of the lever 5'2 the fuel valve is controlled and also the'air supply to the primal-v mixingy ehamber. The throttle valve (l0 which controls the secondary air supply is also controlled or operated through this same means. The throttle valve ll() is rotatably supported in the lower end of the body meniber L! by means of the rollers (31 which engage helically disposed slots 62 in the valve. The valve has upwardly projecting arms o?, which are engaged by lugs (34 projectingr from the cam member 37. "he rollers (il are preferably tapered and mounted on pins (35. The slots 62 being wedgelshaped in cross section to correspond to the taper of the rollers. retain the rollers on the pins. The valve (l0 courts with the disk-like plate 66 which is mounted on the member The member is clamped to the cross bar 22 by means of a nut 67. The plate (56 is secured on the member 25 by means of the nuts 68. one arranged .above and the other below the plate.

In the structure illustrated. we providean air supply or inlet pipe (SS) adapted to be connected to a heating;- coil or the like. not illustrated, for supplying heated air to the carbureter. This inlet. pipe has an elbow sleeved upon the lower end of the body mem ber i2 and secured by means of the coupling member 70 arranged through the bottom of the elbow and threaded upon the lower end of the inlet member 25. The coupling member 70 has kerf-like air inlets 81 therein. (lne of the advantages of this form of couplinpr member T() is that it serves as a muliler for the air passing into the inlet member 25. The supply 69 is provided 'with a slotlilte port 82 formed'transversely therein. This port is controlled by the band-like valve H y which embraces the pipe oil. the pipa` being provided with an annular groove 8l to re ceive the valve, the valve being in etl'ect. a ring of spring material open at, one side to register with the port 82 and turned inwardly at 85 to provide a stop. the stop ro acting with the ends of the port.. A finger piece 86 is provided for the valve 83. This simple arrangement provides an effective valve in which the valve itself is its retaining means, that is, 'the valve is sprung over the pifpe to engage the annular Igroove therein and is retained by its own spring tension and the groove. NVhen it is desired to admit. cool air. this valve 83 is adjusted to admit the desired amount or if it is desired not to provide any heated air. the valve is fully opened.

In the modified construction shown in Fig. XVII. the pipe 69 is omitted and a skirt 8T substituted therefor. This skirt serves to protect the parts projecting below the lower end of the body member 2. The skirt is provided with a cross bar 88 threaded to engage the lower end of the member 25.

For opening' the fuel valve and the primar air inlet and feed valves without openin.;lr the valve (lo. as is sometimes desirable instarting the engine. the cani 7l is operated. 'lhis eam Tl is mounted on the shaft, T2 arranged below the lever head 48. The shaft TL) projects through the flange 7? on the ieariuj; plate l2 and is provided with a sleeve-lilte bearing;Y Trl. Un the outer end of the shaft 7'. is an arm 75. This arm is actuated b v the ram To on the shaft S9. the arm being provided with a roller 9U resting on the cam. For convenience in operation, the shaft Sl) is provided with a flexible extension $)l havingr a finger button 92. In practice. this finger button arranged to be manipulated from the seat of the operator. lVe preferably provide in this connection an index 93 harinar lgures or other indicia thereon indicating degrees of temperature, see Fig. I. in wbieh the index has numerals indicating temperatures from 80 above to l() below zero. The finger piece 92 is provided with an index linger 94. For convenienter we preferably provide a thermometer which is indicated in conventional form at 95, the thermometer bein; lr mounted on the index plate. With these features. the operator has before him means for determining the point to which the fuel valve Cl? and the primary inlet valves` should be opened in starting the 1 engine in different temperatures.

The operation of the device is as follows.- The fuel valve Il.) and the primary inlet \alve are normally slightly open. that is, when the throttle valve is closed. these fuel and prinmry inlet valves are adjusted so that they are slightly open. In starting the engine. the fuel and the primary valves a re opened independently of the. throttle by means of the finger piece 92 and the operating connections described in connection therewith` the index finger being turned to indicate approximately the temperature. ll'ith the engine started and "warmed up, the control or regulation is through the operalingir lever 52 which controls. as has been describedl both the fuel and primary inlet valves and the secondary or throttle valve ft). The air passing through the primary inlet supply to the earliureting chamber 31 is mixed with the fuel and passes with the fuel in a substantially dry mixture into the mixing chamber. where. if the valve 60 is rrpen. it is mixed with more air and passes on to the engine. The engine may be started and in fact run tlnough the carbureting chamber only. but this is not the purpose. and to secure the most satisfactory results. the earbureter should be operated for startingr and continued operation through both valve controlling means particularly when the temperature is low. In high temperatures, the en ine can be started without manipulation other than through the lever 52.

We have found in practice, that a substantially dry mixture issues from the nozzle of the primary carbureter This mixture is delivered laterally through the annular noz '/.le into the mixing' chamber and in such :l mame-r that il is evenly mixed with the air passing to tht` engine .so that a very even and cti'cctive mixture is secured.

'l`leneedle valve arranged as illustrated. opens uniformi) and increases the supply of the fuel as the supply of air is increased, thus maintaining the proper pro iortion.

'c have illustrated and de-cribed our im proved carbureter in the form in which we hate embodied thc same in practice.

\'e arc aware that considerable modification in structural detail is possible but be lieving that the disclosures ntilde will enable others to embody the mme as coalitions or laste or design may dictate. we have not attempted to illustrate or describe the various modifications herein.

Having thus described our invention. what vvc claim is new and desire lo secure by Letters Patent is:

l. In a carbureter. tht` con'ibination with the body, of a carburcting chamber member: a mixing chamber in said body into which said carbureting chamber delivers; an inlet memr having an air inlet passage and a fue] inlet. passage therein and provided with a nipple at its upper end having a tapered fuel nozzle projecting into said carbureting chamber and a plurality of air discharge passages grouped about said fuel nozzle, the bottom of the carbureting chamber member coacting with the fuel nozzle and constituting an air valve said carbureting chamber member being provided with a sleeve. rotatably engaging said nipple; a rotatably mounted tubular actuating member for said carbureting chamber member: a needle valve arranged longitudinally through said actuating member and threaded for adjust ment therein to coact with said fuelnozzle;y

a cam on said inlet member; a enacting cam on said carbureting chamber member whereby rotative movement of said` actuating member moves the carliureti'iigvv chamber member longitudinally: a cylindricalthi-ottle valve having upwardly projecting arms thereon and helically disposed slots therein: supporting members engaging said slots; and pairs of lugs carried by said carbureting chamber member slidably engaging said arms. l

2. In a carburetor, the combination with the body, of a earbureting chamber member; a mixing chamber in said body into Which said carbureting chamber delivers; an inlet member having an air inlet passage and a fuel inlet passage therein and provided with a nipple at its upper end having a tapered fue] nozzle projecting into said carbureting chamber and a plurality of air discharge. passages grouped about said fuel nozzle. the bottom of the carbureting chamber coacting With the fuel nozzle and constituting an air valve, said carbureting chamber member being tably engaging said nipple: a/ rotatably mounted tubular actuating member for said carbureting chamber member; a needle Valve arranged longitudinally through said actuatingr member and threaded for adjustment therein to coact with said fuel nozzle; a cam onsaid inlet member; and a coacting cam on said carburcting chamber member whereby rotative movement of said actuating member moves thc ca rbureting chamber member longitudinally.

It. In a carbureter. the combination with the body. of a carbureting chamber member; a mixing chamber in said body into which said carhureting chamber delivers; an inlet member having an air inlet passage and a fpel inlet passage therein having a tapered yfuel nozzle projecting into said carliureting chambem the bottom ot' the. ca rbureting chamber member enacting with the fuel nozzle and constituting an air valve. said carburcting chamber member being mounted on said inlet member: a rotatably mounted actuating member for said carbureting chamber member; a needle valve carried bv Said carburetilw chamber threaded for adjustment. therein to coact with said fuel nozzle: a cam on said inlet member; a eoacting cam on said carbureting chamber member: a cylindrical throttle valve having upwardly projecting arms thereon and helically disposed slots therein; supporting members engaging said slots; and pairs of lugs carried by said carburetine chamber member slidably engaging Sai( arms.

1. ln a carbureterthe combination with the body, of a carbureting chamber member; a mixing chamber in said body into which said oarbureting chamber delivers; an inlet provided with a sleeve rotamember and member having an air inlet passage and a.

fuel inlet passage therein having a tapered fuel nozzle projecting into said carbureting chamber. the bottom of the carbureting chamber member coacting with the fuel nozzle and constituting an air valve. said carbureting chamber member being rotatably mounted cn said inlet member; a rotatably mounted actuating member for said carburcting chamber member: a needle valve carried by said carburetingchambcr member and threaded for adjustment. therein to coact with said fuel nozzle; a cam on saidA inlet member; and a coacting cam on said carbureting chamber member whereby rotati"e movement of said actuating member moves the carbureting chamber member longitudinally.

5. ln a carbureter, the combination with the body, of a carbureting chamber member;

7 ,momia y member; a rotatively `mounted actuating member for said carbureting chamber member; acum on said inlet member; a coacting cam on said earbureting chamber memper; a cylindrical throttle valve having helica rslots tlicrein; supporting members engaginglsaid slots; upwardly projecting arms on said throttle; and lugs on said carbureting chamber member engaging said arms.

(i. ln a earbureter,v the combination with the body7 of a primary.carbureting member; an inlet member having an air inlet passage and a fuel inletpassage delivering to the carbnreting chamber; lfuel and air inlet valves carried bv said earbureting chamber member and actuated by the longitudinal. movement of said carbureting chamber member; a rotatively mounted actuating member for said carbureting chamber 111cm-, ber; a cam on said ,inlet member; and a co, Aacting cam onsaid carbureting chamber member whereby rotative n'iovement of said actuating member moves the carbureting ehllmber member longitudinally.

T. In a carbureter, the combination of an inlet member having an air inlet passagev and a fuel inlet passage; a earbureting chamber member rotatably mounted on said inlet member and having a mixing chamber into which said fuel and air passages deliver; air and fuel valves carried by said carbureting chamber member; a cam on said inlet member; and a enacting cam on said earbureting chamber member whereby rotative movement of said actuating member moves the earbureting chamber member longitudinally.

8. In a carburetor, the combination of an' inlet member having an air Ainlet passage and a fuel inlet passage therein and provided with a nipple at its upper end having a tapered fuel nozzle and a p uralityiof air discharge passages grouped about said fuel noz` zle; a carbureting chamber member having a sleeve engaging said nipple and a mixing chamber into which said fuel nozzle projects, the bottom of the mixing chamber co-` acting with the fuel nozzle constituting an air-valve; and means for adjusting said carbureting chamber member.

9. ln a carbureter, the combination of an inlet member having an air inlet passage and a fuel inletlpassage therein and provided vwithr a tapered fuel nozzle; a carbureting chamber member having a mixing chamber into which'said fuel nozzle projects, the bottom lof the mixing chamber eoacting with the fuel nozzle constituting an air vave; and meansfor adjusting said cai`4 -bureting chamber member longitudinally to 'simultaneously operate said fuel and'air inlet valves.

'30. In a earbureter, the combination of anfinlet member having an air inlet passage andV a fuel inlet passage; a carbureting chamber member rotatably mounted on said inlet member andhaving a mixing chamber into' which said fuel and air passages de liver; air and fuel valves carried by said carbureting chamber member; a cam on said inlet member; a eoacting cam on said ear-o hureting chamber member; a Cylindrical.-

throttle valve having upwardly projecting arms thereon and helieally disposed slots therein; and supporting members engaging sa id y slots, said earburetmg chamber member being provided with lugs engaging said arms.

1l. ln a carburetor. the combination with the carbureting chamber; fuel and air inlet valves therefor; a mixing chamber into which said carburetingchamber delivers; a throttle for said mixing chamber valve dis! posed in advance of the discharge ofhsaid carbureting chamber; and operating cdnnections for said primary air inlet and fuel valves and said throttle arranged toperxvnit the opening of said primary chamber air inlet and fuel valves independently of said throttle valve, said fuel Valvel being adjustabrv associated with said primary air inlet valve.

12. In a carbureter. the combination with the carbure-ting chamber; of simultaneously operated fuel and air inlet valves therefor; a mixing chamber into which said carbure-.tl

ing chamber delivers; a throttle for said mixing chamber disposed in advance of the discharge of said cayrbureting.lr chamber; and operating connections for said throttle valve to saidy carbureting chamber fuel and air inlet valvesI whereby it is simultaneously operated therewith.

13. ln a carburetor. the combination with, the carbnreting chamber; fuel and air inlet valves therefor; a discharge nozzle for said carbnreting chamber; a mixing chamber into which said nozzle delivers; a tlii'otfle valve disposed in advanceof said nozze; and operating connections for said primary air inlet and fuel valves and said throttle arranged to permit the opening of said primary air inlet and fuel valves independently of said throttle valve, said fuel valve being adjustably associated with said primary air inlet valve.

14. In a carbureter, the combination -vvith the carbureting chamber: of simultaneously whereby it is Simultaneously operated therewith.

l5. In a carburetor, thtl comination of a rarburctiug chamber; fuel a d air inlet valvetherefor; ay mixing chamber into which .-ad carburetng chamber delivers; a throttle Valve for said mixing chamber; and operating connections for .said fuel, carbureting chamber and throttle valves.

16. In a carbureter, the combination of a carbureting chamber; of simultaneously operated fuel and air inlet valves therefor; a mixing chamber into which said carburetinr chamber delivers 3. a throttle valve for said mixing chamber; and operating connections for said throttle valve to said carbureting chamber fuel and air' inlet valves whereby it is simultaneously operated therewith.

17. In a carbureter, the combination with the carbureting chamber, of simultaneously operated fuel and air inlet valves therefor;V

an annular discharge nozzle for said carbureting chamber communicating therewith through a plurality of openings; a mixing chamber into which said nozzle delivers; and a throttle valve disposed in advance of said nozzle.

18. In a carburetor, the combination with the ('arburet'ing chamber, of simultaneously operated fuel and air inlet valves therefor; an annular discharge nozzle for said carbureting chamber; mixing chamber into which said nozzle delivers; a throttle valve disposed in advance of said nozzle; and operating connections for said throttle valve to said carbureting chamber fuel and air inlet valves whereby it is simultaneously operated therewith.

19. The combination with the fuel valve, of a primary air inlet valve and a cylindrical throttle valve; an actuating member mounted for rotative and longitudinal movement, the fuel valve being adjustably associated with said actuatin member for adjustment relative to the primary air inlet valve; a spring arranged on said actuating member; a cam for actuating said actuating member longitudinally against said spring When the member is rotated; arms on said throttle valve having sliding engagement with said actuating member; and means for moving said actuating member longitudinally independently of its rotative movement.

20. The combination with the fuel valve, of a primary air inlet valve and a cylindrical throttle valve; an actuating vmember mounted forrotative and longitudinal movement, the fuel valve being adjustably associated with said actuating member for adjustmentY relative to the primary air inlet valve; a cam for actuating said actuatin member longitudinally when the member is rotated; arms on said throttle valve having sliding engagement with said actuating member; andm'eans for moving said actuating member longitudinally independently of its rotative movement.

21. The combination with the fuel valve. of an air inlet valve; an actuating memberI mounted for rotative and longitudinal movement; the fuel valve being adjustably associated with .said actuating member for adjustment relative to the air inlet valve; a spring arranged oli-said actuating member; and a cam for actuating said actuating member longitudinally against said spring when the member is rotated.

2Q. The combination with a fuel valve, of a primary air inlet valve and throttle valves; an actuating member mounted for rotative and longitudinal movement, said fue-l and primary inlet valves being opened and closed by the longitudinal movement of Said member; operating connections for said actuating member to sai'd throttle valve,

Ysaid throttle valve being opened by the rotative movement of said actuating member;

and means for rotating and for moving said Y actuating member longitudinally without rotating the same to open said fuel and primary air inlet valves without opening the throttle valve.

23. In a carbureter, the combination of the primary air, fuel inlet and throttle valves; an actuating member therefor mounted for rotative' and longitudinal movement, said fueland primary air inlet valves being actuated by the longitudinal movement of said actuating member, all of said valves being actuated by its rotative movement; means for shifting said actuating member longitudinally comprising finger piece; and an index, said finger piece being provided with an index finger coacting with said index.

24. In a carbureter, the combination of the primary air, fuel inlet and throttle valves; and an actuating member therefor mounted for rotative and longitudinal movement, said fuel and primary air inlet valves being actuated by the longitudinal movement of said actuating member, all of said valves being actuated by its rotativemovement v 25. In a carburetor, the combination of a valve actuating member mounted for rotative movement, and having a stop thereon; a stop member having stops coacting with the stop of said actuating member, said sto i member being supported for rotative adjustment; and actuating screws for said stop member.

26. In a carbureter, the combination with the ehambered body having a cross bar therein provided with a fuel inlet passageA and an upwardly expandingseat; a fuel and air inlet member having a downwardly tapered head fitted in said seat and a fuel passage registering with said passage in said arm; a nut for clamping said tapered head in said arm, said inlet member being threadlil ed to receive said nut; and air and fuel valves for controlling said air and fuel pas sages.

27. Yln a carburetor, the Combination wit-h the ehambered body having a cross bur therein,Y provided wit-h the fuel passage; a member having fuel and air inlets therein arranged through said arm, the fuel pas sage registerin with vthe fuel passage in said arm; a eosure plate for said body; nuts on said body for supporting said plate; a rylindrioal `Valve arranged within said body to coast with said plate. said valve having spiral slots therein; supporting members on said body engaging said slots; and means for rotatin said valve Aiivhereby it is adjusted longitu inally in said body to and from said plate.

28. ln a carbureter, the combination with a ehambered body open at its outer end, of a centrally disposed air inlet` member having a fuel passage therein; a plate mounted on said air inlet member in a spaced relation to the open end of said body, said inlet member opening on the outside of said plate; and a cylindrical valve supported Within said body to be adjusted to and from said plate to admit air between the plate and the edge of the valve.

29. In a Garber-eter, the combination with the body, of a carbureting chamber mem ber; mixing chamber in said body into which said carbureting Chamber delivers; an inlet member having an air inlet pas sage and a fuel inlet passage therein, said earbureting chamber member being rot-ata bly mounted on said inlet member; a ro. twtubly mounted actuating member for smid rarbureting chamber member; a needle valve carried by said carbureting Chamber member threaded for adjustment therein; a am on nid inlet member; e reacting cam on said carbureting chamber member; rollers arranged between said cams; and a supporting ring for said rollers loosely embracing said cum on said inlet member.

30. In a carbureter, the combination of a carbufettine; ehamber; fuel and air inlet valves therefor; a mixing chamber into which said enrbureting chamber delivers; a throttle valve for said mixing chamber; operating means for said lfuel; vulve car bureting and throttle valves adapted to permit the. operation of all of said valves simultaneously or the operation of the fuel and air inlet valves simultaneously and independently of the throttle valve.

3l. ln a. carbnreter, the combination of a earburet-ing chamber; simultaneously operated t'uel and air inlet valves therefor, the said fuel inlet valve being adjustably associated with the air inlet valve; a mixing @bomber into which said carbureting chamber delivers; and a throttle valve for said mixingr chamber haring operative connection with said carbureting chamber air inlet valve whereby they. are simultaneously operated.

In witness whereof, we have hereunto set our hands and seals in the presence of two witnesses, A

WILLIAM SHAKESPEARE, Ja. [n 5.] WILLIAM SCHMH). [1.5.]

Witnesses LUELLA GBEENFIELD, Piura lVooDRUFF.

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