US1657058A - Carburetor - Google Patents

Description

Jan. 24, 1928 d I 5 C. BALL 1,657,058

CARBURETOR vlled Feb. 16. 1923 2 Sheets Sh eet l Jan.. 24, 1928. 1,657,058

B. C. BALL CARBURETOR Filed Feb.l6. 1923 2 Sheets-Sheet 2 Patented Jan. ,24, lZtS.

-uulrsosares rarer ori-1on1 BERT C. BALL, OF PORTLAND, OREGON.

CARBURETOR.

Application filed February 16, 1923. Serial No. 619,385.

:lt is desirable in controlling the flow ol" fuel and air to carburetors to varythe proportions of the mixture under certain conditions. ln seine types o'tcarburetors the fuel is delivered to a spray'passage and carriedy 1n the forni of a spray to the mixture pas-` livered as the throttle is opened.k l prefer" also to `control the air passage in connection with a choke valve so that the mixture will be enriched not only by the reduction in pressure incident to the closingy of the chokey valve but alsoby reason of the greater restriction or expulsion `of air through the spray passage. Other details and features of the invent-ion will appear from the specification and claims.

The invention is illustrated in the accompanying drawings as follows:-

Fig. 1 shows a central vertical section' through the carburetor.

Fig. 2 a side elevation of the carburetor.

Fig. 3 a section on the line 3-8 in Fig. 9;.

Fig. l a side elevation7 partlyin section, on the line 4 4 in Fig. 3.

Fig. 5 a view Vsimilar to Fig. the parts in a different position.

Fig. G a section on the line time iu Fig. 4t.

Fig. 7 a plan view of one of the valve seats showing the port leading to the spray passage.

'l marks the carburetor body. This has a mixture passage Q extending through it. The usual Vent-uri tube 3 is arranged in the mixture passage andy spray nozzles t lead into the Venturi tube. A throttle valve 5 :is fixed on the shaft 6. `lt is of the butterfly type and controls the mixture passage in the usual manner. A cholre valve 7 is mounted on a shaft 8 and at the inlet end of the ininture passage and operates in the usualmanner. A lever 9 is fixed on the shaft 6 and a throttle control rod 10 leads from the lever 9. similar lever 11 is fixed on the shaft 4t but with passage 24.

a fuel well 29.

` of this type.

8 and the usual choke rod l2 leads fromthe lever l1. A 1doat chamber 13 has an rinlet passage le. This is controlled by a float valve 15. `A stern 16 extends from the float valve 15. A spoolI 17` is arranged onthe stein. Levers 18 engage the spool 17 and are in position tobejactuated by a float 19 in the usual manner.

A discharge passage' 2O leads from the float chamber to a vertical fuel passage 21. A plug screw 22 is arranged in the passage 21. lt has the radial openings 23 communieating with the passage 21 andhas a central A metered opening 25 is ai ranged at the end of a plug @Tentending downwardly into the passage 21, the plug 27 having a central passage 2G into which the vmetered opening leads. Radial openings 28' lead through the walls of the `plug 27 into The fuel well 29 communicates by a spray passage 30 with an 'annular passage 31 surrounding the Venturi tube and from which the spray nozzles 4 extend. i

The operation of this part of the carbuH retor follows the operation of carburetors Fuel is delivered by gravity and suction through the passages 28 tothe well 29. Air is delivered to the well 29 in the manner described hereafter andV sweeps up the fuel and carries it in Vthe forrn of Y.

a spray through the spray nozzles. The pressure in the well varies with the pressure in the mixing chamber. the reduced pressure being communicated 'through the nozzles. Thisipressure in the well may be varied by controlling the inflow of air to the well and in the present invention as heretofore stated this is utilized in varying the richness of the mixture.

A spray valve control post 32 extends 'from the body of the carburetoi` and leads from the well 29. This has a port opening S-t which leads to a central passage 33 in the post. A valve 35 is rotatively mounted on the post and this has a port 36 which is adapted to be moved into and out of register with the port 34. A screw 39 extends into the opening 33 in the post and secures the valve on the post, this screw having a con tral passage l0 which communicates with the passage 33 and the ports through radial passages 39a. y A lever /11 extends from the valve and this is connected by a link t2 with the Athrottle control lever 9 so that as the throttle is opened the valve 35 is moved and graduullycloses, orlnezujly closes the vulve ope11- ingetlnouglrtlie :ports 34 zriul-jl=\viien the throttle heb' reached o predetermined intermediate position where the richer mixture is desired. By vmfyog the Shapes ofthe "ports the fnrieton in Vthe mixture may be changed es desired to correspond with dlll'eient throttle openings. AsA shown the port 34; is TShoped, the moin part of the opening heving e; fairlylwideopening 3T which is perV nunlently open .und a. nunnyport opening 38 which islclosedfesthe valve ie swung. p

In order tolnmkethe choke vulve uitluence the feeding of fuel thnough the nir to the `Sploy passage thewelve has on enclosed ehzunher l2-3 over ,the port; 3o from, which. e port ll leads to avolafelopening45. A port lends to the vnlveopenng-lond e vulve -l' slides in the opening 45. A; spring link t8 valve"independently] of this li11k:'l11d the V spring being` designed` to` perintloi the free -1nove1nent Vof the valve 35 with the choke rulveopen as indicated i1rl1`ig..5. ln startling wththe choke valve nearly closed the Valve 17 4is moved tore.. position` closing the `ports i6 und tend consequently closes oli -the uirto thespray passages() thutthe fuel is subjected `to the full `Suction elloreof the nnxture passage und zml'eryrlch flow of nux- -tu1e`fo1lows- Asthe choke valvole opened the: valve et? is thrown 'out ot' action `and has no :further `influence on the introduction of fau'.

connecte the vulve All with the .lever 1l, this llink lnivlng uelotte-.d end :it Seo neto e eome treedoln ot'` movement;tothe choke 711ML I claim es new is :n l" In n Cmbmmmftflle eothhnmtimr 01 a nnxlurepnesuge; :i thi-0m@ wlmi :mld pw `spraylpessogel; e `rotery entre on SuidSe-at; a. connection between seid rotaryY vulve "und the throttlefvnlvepehoke controlled vulve pcerriedbyfthe rotary vulve; :uidm connectonbetWeen the choke controlled uulreenfl the choke Naive. l y

3. In :i`em'lmreorj the ,combination ,of n mixture passage; trtlnfotllo volvo iu `the peek enge.; ochoke vulve in the pee-enge; it Spray jziarsszrge leading to Athe mixture pzleeuge; :i rotary vulve seat having `ports leerling tofthe spray pnesoge; u rot-ary -vzrlve on seid sont;

,o connection.between said rotory vulve und the throttle valve; te choke controlled vetro lcarried by therotery ralvegpend nV connecl tion between Vthe choke controlled vulve und :the choke valve, Suid connection huviligg sleek perlnittillg the movement off the rotary mire Awith the choke valve.stationery. l

in testimony Whereofl.llzwehereunto set my hand.

BERT. C. BALL.

rotarywrolve sent hzwngporte leedngto the f Til

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