US1179663A - Carbureter. - Google Patents

Description

W. SHAKESPEARE, JR. & W. SCHMID.

CARBURETER.

APPLICATION FILED DEC. 16. 1912.

1,179,663. Patented Apr. 18, 1916.

3 SHEETSSHEET l.

| I I I 'I W. SHAKESPEARE, JR. & W. SCHMID.

CARBURETER.

APPLICATION FILED DEC.l6,1912

Patented Apr. 18, 1916.

3 SHEETS- SHEET 2- MU {142mm W. SHAKESPEARE, Jn. & W. SCHMID.

CARBURETER.

APPLICATION FILED DEC. 15. m2.

Patented Apr. 18,1916.

3 SHEETS-SHEET 3.

UNITED STATES PATENT OFFICE.

WILLIAM. SHAKESPEARE, JR. AND WILLIAM SCHMID, OF KALAMAZOO, MICHIGAN ASSIGNORS T0 WILLIAM SHAKESPEARE, JR., COMPANY, OF KALAMAZOO, MICHIGAN.

CARBURETER.

Application filed December 16, 1912.

To all whom. t may, con/3cm Be it known that we. \Vnmmi Sinai-.- swans. J12, and \ViLLrvw Sunni), citizens of the I'nited States, residing at Kalamazoo, Michigan. have invented certain new and useful Improvements in arhureters, of which the following is a specification.

This inventii'm relates to inn'irovements in earhureters. The main objects ol" this iii-- vention are tirst. to provide an improved rai'hureter in which the proper relative prop rtions f fuel and air are maintained through varying running conditions of the engine. Second. to provide an improved earhureter in which the air and fuel valves are simultaneously operated. il hirtht fn'ovide an improved earhureter which is (731)21- hle of lacing adjusted for proportioning the air and fuel and one in which the proportion is maintained throughout the scope f adjustment of the throttle. Fourth, to pro vide in a arhureter, an improved valvev mechanism nhieh is not likely to get. out. of repair or adjui ll'nent in use.

Further ohjeets. and olrieets relating to structural details will definitely appear from the detailed deseription to follow.

'0 aeeomplish the ohjeets oi" our invention by the devir and means deserihtal in the following sptwitication.

The imention is clearly pointed out in the elaims.

A stru ture which is. a preferred emhodimeri of our invention is learly illustrated in the aeeompartying drawing forming a part of this specification. in which:

l igure l is a side elevation of our improved earhl'ret r. th starting valve and the air valve operating mechanism heing shown in front elevation. Fig. II is a vertical central section of the earlmreter proper. Fig. III a horizontal seetion on .i line. eorreonding to the llltlliell line ii i, ot Fig. II. Fig. ll i an end el vation of the air supply conduit of the earhureter. Fig. V is a transverse vertical section through the air supply conduit taken on a line eorre:- pondlug! to line 5 5 of Fig. II. Fig. VI s a detail verlieal section on a line t'lll'ltSIflHltl ing to the law-hen line t3--t' of Fig. i. ailtlQ defined and mg details of the priming mechanism. Yll 1s a detail perspective of the all valve S and it mountings. Fig. 'lll is a per speetive view of the hearing rollers 42 and Specification of Letters Patent.

Patented Apr. 18, 1916.

Serial No. 736,996.

their retaining ring. Fig. IX is a detail plan view of the valve lever 49 and the fuel valve adjusting member 58. Fig. X is a. detail seetion on a line corresponding to line --10 of Fig. I]. Fig. XI is a perspective view of the friction washer 59. Fig. XII is a detail vertical section through the primer and teimaerature control mechanism ltth'tll on a line corresponding to line 12---12 of Figs. I and XIII. Fig. XIII is a front view of the primer and temperature control meehanism with the index plate "(4 removed. 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.

Briefly eonsidered, our improved carburetcr comprises a ehamlmred body having a mixing chamber and an air inlet or air eupply chamber. fiul'iported centrally within this lfiOtiV is a carhureting chamber arranged to deliver to the mixing (zl'iamher. Fuel is delivered centrally to the carbureting ehamher. A mixing chamber valve is provided which controls the deliveryof air to the mixing chamber from the inlet chamher. This valve enacts with an annular seat so that when the valve is opened, the air is delivered to the mixing chamber through an unohstruetive annular port. The. earhureting ehamher delivers to the mixing chandler centrally above this port. The fuel nozzle delivers centrally to the carhureting chamber and an annular earlimreting ehamher valve is provided to enact with the nozzle providing when open an unobstructive air inlet port for the earhureting chamber to which the fuel is centrally delivered. The needle valve is arranged to project into the fuel nozzle centrally thereof. These valves are all mounted so as to he simultaneously adjusted, as will appear from the. following detailed description.

The hodv of our improved carlmreter. for convenience in manufacturing and assemhling. is; preflrahly formed of members 1, i3 and the memlwr 3 being the air supply conduit mcmher. The members 1 and 2 are chambered. or provided with passages, the passage in the memher constituting a mixing and delivery passage of the earhurotor. The member 3 is provided with an annular l'uel reservoir 4. The member .1 is

provided with an annular seat or internal shoulder into which the member 2 fits. The member 2 is provided with an annular shoulder t with which the member 3 engages. The parts 2 and 3 are secured together by the member T having a stem-like portion arranged through the cross bar 8 on the member :2 and the cap nut 9 arranged. through the ottom of the member 3 and threaded upon the member T. At one side the reservoir -l is provided with an otl's-iet inlet chamber ltt provided with a nipple 11 to which the supply pipe is connected. The inlet valve 12 is controlled by the annular float. l2- which acts on the lever l-l pivoted at 15 and slotted to engage the reduced portion. It? of the valve stem. The lever it is forked to embrace the body of the carlnu'eter, as shown in Fig. III. The lever is connected to the float by means of the pins 17. The chamber is provided with a removable cover 18 which may be removed to atlord access to the valve members. The pivot for the lever It is carried by the bracket 19 mounted on the cover plate 18. the bracket being provided with downwardly projecting pivot cars 20 between which the lever is arranged. The cover plate 18 is provided with a bushing 21 through which the stem of the valve projects. The cap 22 for the valve/ stem is removably mounted upon the. bearing or bushing 21 so that by removing the same, the valve stem is exposed so that it may be turned in its seat for clearing the valve or the valve seat. The inlet chamber 10 is provided with a well or depression in its bottom and with a drain each 23 so that; the sediment collected in the well may be drawn oil'.

The member 1 oi the body in the structure illustrated is provided with a water jacket fi l. having suitable connections the object being to supply heated water to the jacket when desired.

The cross bar 8 is provided with a fuel passage 25 communicating with the reservoir 4. while the member 7 is provided with a passage 20 registering therewith. The member 7 is provided with a valve seat 27 for the needle i'uel valve 23. This valve seat 27 is formed in the valve member 29 seated in the upper end of the member 7 and communicating with the passage thereoi. as shown in Fig. ll. The member 7 is provided with a plurality of air passages 30 opening into the passage of the body member 2 at their lower ends and delivering at the upper end of the member 7 about the fuel valve. The, fuel valve is surrounded by the cal-bur ing chamber member 31 which open? at as upper end into the mixing chamber. '1 hi air passages 30 are eontrolled by the val- 32 which is secured to the carburcting chamber member 31 and coacts wit. the valve member which is tapered upwardly as shown. The valve 32 is opened and closed by vertical movement as is also the fuel valve 27.

The mixing chamber member 31 and the fuel valve 28 are both carried by the tubular actuating member 33, the stem 3t of the fuel valve 29 being arranged longitudinally through the member 233 and threaded into the same for adjustment. while the carburet ing chamber member Ill is connected thereto through the arms 23;) having a. ring 36 at" their lower ends embraring the carbureting chamber member 31 and the ring 37 at its upper ends embraces the lower end of the member 323. Th lower end of the adjusting member and of the ring 37 are beveled as shown. the d scharge for the carbureting chamber being between these members and the upper end of the carbureting chamber. The throttle valve 38 is mounted on the shoulder 39 on the earbureting chamber member 31. This throttle. valve 38 coacts with an annular slicailderdike seat 40 within the body member :2. By thus arranging the parts. the throttle valve 38, the fuel valve 93 28 and the carbnreting chamber air inlet valve 3'2 are sinulltaneously and uniformly opened and closed. The valves more vertically in opening and closing and this is effected by rotative movement of the member The member 31 is provided with cams l1 coarcing with rollers 4:2 traveling on the cam roller supporting member H which is mounted on a shoulder on the members 7. The roller retaining ring 43 is loosely mounted on the member H. The member 33 is provided with a bearing member l5 co acting with the bearing member 46 carried by the body of the carlnireter, a ball bear ing' being provided in the structure illustrated. The a -tuating member :53 is held yieldinglv downward by the coiled spring 47. the lower end of which engages the ring 37. its upper end engaging the bearing member 45. On the upper end of the member 33 is a head 49 to which the operating lever 49 is attached. The head is secured to the member 23 by means of the sleeve nut 50 arranged in the chamber 51 in the head and threaded into the tubular member 33, the valve stem 3% being arranged through this sleeve-like nut as shown in Fig. .11. The head 48 is supported in a bearing 52 formed in the upper side of the body mcm- 320 bar 1. The stroke of the lever is regulated by the stop .33. on the lever head 43. coacting with the stop member Bl having stop shoulders 55 and 56. The stop member .34 is adjusted by means of the worm 57 the stop member being suitably toothed to court with the worm. The fuel valve projects from the member 31% and its head is provided with a linger piece 55% bearing suitable scale indicia. The fuel valve is retained in its adjusted position by the friction washer having fingers G engaging grooves 61 in the head to prevent its turning, the spring being arranged to bear against the washer. lVith the parts thus arranged, the fuel valve and carbureting chamber air inlet valve, and the throttle valve are all operated from the lever 49.

To control the temperature of the air passing to the carburetor, the conduit member is provided with a cold air inlet port 63 and with a hot air inlet 6% adapted to be connected to a suitable source of supply, as a coil (not shown) heated by the exhaust. The cold air inlet and the hot air inlet are both controlled by.the cylindrical valve 65 having a transverse port 66 of such length that the valve maybe adjusted to admit both the cold air and the hot air in varying proportions or to shut off the cold air or the hot air entirely and take only hot or cold air. The valve 65 is controlled by the lever 66 arranged in a convenient position, as upon the dash 31 0f ,a car when our improved carbureter is used on a motor car engine. The lever 66 is provided with a sleeve-like bearing member (38 arranged through the bearing 69of the support 70 which is mounted on. the front of the dash, the bearing 69 being arranged through the dash. On the rear end of the lever bearing m mber 68 is an arm 71 connected by the a T2 to the arm 73 on the valve 65. A Mil T l having suitable temperature indicia mounted on the support 70. The edge of the dial is notched, while the lever is pro vided with a. spring pressed pawl 7 adapted to engage the notches for retaining the lever in its adjusted position. The finger piece of the lever serves as an index. The numerals of the index dial indicate the position the lever should be adjusted to for the different temperatures. For instance, the lever 66 is shown adjusted to 4:0" and the air inlet valve is open to take hot and cold air approximately half in half. In a temperature of 80, the lever would be adjusted to 80'. In a temperature of zero, it would be adjusted to zero and a greater portion of the air taken would be through the hotair port. At ten below zero only hot air would be taken. This is found to be a very advantageous feature in the proper control of the carburetor and in securing the best results.

A. primer valve 76 is arranged above the reservoir 4 in a. chamber '77 provided therefor in the body member 1. The valve seat 87 for the valve 76 is formed in the wall of the body member 1. The valve chamber 77 connected the tube 79 with. the oil reservoir, the tube depending into the same as shown in Fig. VI. The valve is held yieldingly seated by means of the spring 80, one end of which bears against the collar 81 on the valve stem, the other being seated in the closure 82 for the chamber 77, the valve stem projecting through the end of the closure. The valve stem is provided with a disk-like head 83 with which the eccentric pin 84 on the rotating valve actuating member 85 coacts. The valve actuating member 85 is supported in a bearing 86 carried by the closure member 82. The actuating member 85 is connected by the flexible shaft 87 to the spindle 88 of the lever 89, the spindle 88 being journaled in the bearing sleeve 68 of the lever 66. See Figs. I, XII and XIII. The lever 89 is provided with a lug ill) coacting with a lug 91 on the lever 66. These lugs engage when the levers are swung to certain positions, for instance, when the primer control is adjusted to start the engine at temperature, the air control is shifted at the same time to the 10 position if it has not been previously adjusted to such position. The primer control lever may, however, be returned to its running position without moving the air control lever. \Vhen the lever (36 is swung agaii'ist the boss-like stop 92, the cold air port is fullv opened and the hot air entirely cut oil". This also swings the lever 89 against the stop 93 or to its closed or running position. By this arrangement, a very effective priming is secured which greatly facilitates the starting of the engine. Further, it the primer be opened during the last few strokes of the engine when stopping the same. the cylinders will receive such a charge of fuel that the engine can usually be started from the spark even for a considerable period after stopping.

(ertain features of the structure here described are illustrated and broadly claimed in our Letters Patent No. 1,107,713, issued to us August 18, 1914. the present structure being in some respects a modification and improvement upon the structure there illustrated, and certain features described in this application are claimed in a divisional application filed June 13, 1913, S01. No. 773,412.

'0 have illustrated anddescribcd our improved rarbureter in a structure in which we ha vc embodied the same. \Ve have not attempted to illustrate or describe various modifications which we contemplated as such nuidifications will it is believed be readily understood by those skilled in the art to which this invention relates from the disclosure herein made. We desire, however, to be understood as claiming our inventions specifically in the form illustrated as well as broadly within the scope of the appended 125 claims.

Having thus described our invention, what we claim is new and desire to secure by Letters Patent is: 1. In a carburetor,

llll

the combination of a chambered body provided with an annular shoulder-like valve seat. the'chamber above said valve seat constituting a mixing chamber and that below an air supply chamber, a carbureting chamber member provided with a carbureting chamber delivering to said mixing chamber. a mixing chamber valve mounted on said carbureting chamber member to coact with said valve seat. an inlet member having a fuel inlet passage therein provided with a fuel nozzle delivering to said carbureting. chamber and having a plurality of air passages disposed to deliver to said carburetiu g chamber about said fuel n zzle and communicating with said air supply chamber. a carbureting chamber air valve carried b v said carburet ing chamber member. a needle fuel valve carried b v said eai'bui'etiug chamber member to coact with said fuel nozzle. and means for vertically adjusting said carburcting chamber member.

2. In a carbnreter. the combination of a chambered body prmided with an annular valve seat. the chamber above said valve seat constituting a mixing chamber and that below an air inlet chamber. a carburcting chamber member provided with a carburet ing chamber delivering to said mixing chamber. a mixing: chamber valve mounted on said carburetiiig chamber member to co act with said valve seat. a carburetiiig chauiber air inlet valve mounted on said carburcting chamber member for adjustmentthei'ewitli. a fuel valve mounted on said. carbui'ctinu chamber member for adjustment therewith. and means for vertically adjusting: said (flll)lll'(llil chamber member.

3. In a carburetor. the combination of a mixing chamber. a carbureting chamber member provided with a. till'lllll'tiltig chamber delivering to said mixing chamber. a tapered fuel nozzle projecting into said carbuictiiig chamber. there being a plurality of air inlet passages disposed to deliver about'suid nozzle. an annular car burctin; chainbcr air inlet valv mounted on said carburctin; chamber member to cmbi'acc and coact with said l'uel delivery nozzlc. a rotatabl v and longitudinally adjustable actuating" inenibcr to. said (":ll'lHH'Otlllg chamber member. a needle lucl valve arranged longitudinally of said actuating member to enact with said fuel nozzlo. a cam on said carburctiu; chamber member, rollers coacting with said cam whereby when said actuating member is rotated tho carburetiu chamber member is moved verticallv. and a mixing chamber valve mounted on said carburcting' chamber member.

l. in a. carluireter, the combination of a mixing chamber. an adjustable carburetin chamber member provided with a carburoting chamber delivering to said mixing chamber, a mixing chamber air inletvalvc' mounted on said carburet ng chamber memher. an air inlet for said carbureting chamber mounted on said member. a fuel valve mounted on sa'id member. a cam support for said member. and means; for rotating the same whm'i-b it is moved longitudinally 5. In a eai-bureter. the combination of a mixing chamber. a carbureting chamber member provided with a carbiii'ctim; chanr ber delivering to said mixing chamber. a fuel nozzle delivering to said carl'uiretiug chamber. an annular rlt' ltll'cllltif chamber air inlet valve mounted on aid carburctin; chamber member to road with said fuel deliver nozzle. a longitudinally adjustable actuating; member for said carbureting chamber member. a needle t'ucl valve arranged longitudinally oi said actuating member to coact with said fuel nozzle. and

a mixing chamber valve mounted on said carbiireting chamber member.

(1. In a carbureti-i'. the combination of a mixing chamber. an adju tablc rarburcting chamber member provided will; a carbnrets ing chamber delivering in aid mixing chamber. a mixing chamber air inlet valve mounted on said carbui'cting chamber menibci' for adjustment thcrewiih. a l'ucl valve mounted for adjustment with said (:llldb i'cting chamber member. a carburcting chamber air inlet valve mounted on said carluircting chamber member 't' r adjustment therewith, and means for longitudinally adjusting said carburciing cliambcr member.

T. In a arburcterjthe combination of a mixing chamber. a carluiretiu chamber cm provided with a carbiireting chamber delivering to said mixing chamber. said I carbiii'cting member being mounted for iongitudinal adjustment. a liicl nozzle deliver in; to said carburcting chamber. a needle 'i'ucl valve mounted on said carbui'i-tiiig chamber member for adjustment therewith and to coact with said nozzle. a carbiu'eting chamber air inlet val e mounted on said carburetinr chamber member or adjustment tlici'cnitli. a mixing chamber valve mounted on said rarbiireting chamber. and means for adjusting said carburetiiig chainbcr member. said fuel valve, being adjustably mounted on said carbureting chamber member.

8. In a. carburcter. the combination of a mixing: chamber, a carbiu'ctiug: cham er member provided with a. carburctiu chamber delivering to said mixing chamber. said caibui'etin; incnibcr bcin; mounted for longitudinal adjustment. :1 fuel nozzle delivcring to said carburetinr cham er. a needle fuel -valv: mounted on said carburetiir; chamber member for adjustment therewith and to coact; with said nozzle. a cari'iui-eting chamber member air inlet valve mounted on Iii said carbureting chamber member for adjustment therewith, a mixing chamber valve mounicd on carbureting chamber, and means for adjusting said carbureting chamber member.

9. in a carburetor, the combination of a hambered body provided with an annular valve seat, the chamber above the seat constituting a mixing chamber and that be lo an air inlet chamber, an adjustable car- "z-u'rcting chamber member provided With a carbureting chamber, a mixing chamber val e n'iounted on said carbureting chamber member to coact with said mixing chamber valve seat providing when open an unobstructed annular port, said car-bursting chamber being arranged to deliver to said mixing chamber centrally above said port,

a fuel nozzle disposed to deliver centrally to said carbureting chamber, an annular carbureting chamber air inlet valve mounted on said carbureting chamber member for adjustment therewith and surrounding said nozzle providing an annular airinlet port for said carbureting chamber,aneedle fuel valve carried by said carbureting chamber member and extending into the delivery orifice of said fuel nozzle to provide an annular fuel port delivering centrally of said carburetln chamber air inlet port, and means for a justiug said carbureting chamber member whereby said valves are simultaneously adjusted. 10. In a carbureter, the combinatlon of a chambered body provided with an annular valve seat, the chamber above the seat constituting a mixing chamber and that below an air inlet chamber, an adjustable carbureting chamber member provided with a carbureting chamber, a mixing chamber valve mounted on said carbureting chamber memlie; to coact with said mixing chamber valve seat prrwiding when open an unobstructed annular port, said carbureting chamber being arranged to deliver to said mixin chamber centrally abovssaid port, a fue nozzle disposed to deliver centrally to said car burcting chamber, an annular carbureting chamber air inlet valve mounted on said carbureting chamber member for adjustment therewith and surrounding said nozzle providing an annular air inlet port for said carbureting chamber, a needle fuel valve carried by said carbureting chamber member, and means for adjusting said carbureting chamber member whereby said valves are simultaneously adjusted.

11. In a carburetor, the combination of a chambered body provided with an annular valve seat, the chamber above the seat constituting a mixing chamber and that below an air inlet chamber, a mixing chamber valve coacting with said mixing chamber valve seat providing when open an unobstructed annular port, a carbureting chamber delivering to said mixing chamber centrally above its said port, a fuel nozzle disposed to deliver centrally to said carburetmg chamber, an annular carbureting chamber air inlet valve surrounding said nozzle providing an annular air inlet port for said carbureting chamber, a needle fuel valve extending into the delivery orince of said fuel nozzle to provide an annular fuel port delivering centrally of said carbureting chamber air inlet port, and means for simultaneously adjusting said valves.

12. In a carburetor, the combination of a chambered body provided with an annular valve seat, the chamber above the seat constituting a mixin chamber and that below an air inlet cham er, a mixing chamber valve coacting with said mixing chamber valve seat roviding when open an unobstructed annu ar port, a carbureting chamber delivering to said mixing chamber centrally above its said port, a fuel nozzle disposed to deliver centrally to said carbureting chamber, an annular carbureting chamber air inlet valve surrounding said nozzle roviding an annular air inlet port for said carbureting chamber, a needle fuel valve, and means for simultaneously adjusting said valves.

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

WILLIAM SHAKESPEARE, JIL- WILLIAM SOHMID.

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