US1132934A - Carbureter. - Google Patents

Description

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FRANK H. HEITGER, 0F INDIANAPOLIS, INDIANA, ASSIGNOB- '10 HEITGER CARBUR-ETOR COMPANY, OF INDIANAPOLIS, INDIAYA. A CORPORATION OFINDIANA.

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Specification of Letters Patent.

Patented Mar. 23, 1915.

Application filed June 8, 1912. ScrialNo. 762.615.

T 'all 2071 am it may concern Be it known that I. FRANK.H. Hnircnn, a citizen of the United States,residing at Indianapolis. Marion county. and State of Indiana. have invented and discovered certain new and useful Improvements in Carbureters, of. \VlllCll the followlng s a spoon for controlling the feed of the gasolene. or

other hydro-carbon fuel, whereby the supply may be automatically regulated to suit the requirements of the speed of the engine and conditions under which it is operating. all as will be hereinafter more fully. described and claimed.

Referring to the accompanying drawings, which are made a part hereof and on which similar reference characters indicate similar parts; Figure 1 is a side elevation of a carburetor embodying my said invention: Fig. 2, a central vertical section through the same; Fig. 3 a detail showing portions of Fig. '2 on an enlarged scale; Fig. -l a cross section on the dotted line 4.4; Fig. 5 a

cross section on the dotted line 5+5, and

6 a cross section on the dotted line represent the mixing chamber, B the gasolene reservoir or float chamber, C an annular casing member or top interposed between said float chamber and said mixing chamher, and D the main air supply to the spraynozzle. These several parts are or maybe of any common or approved construction. that shown being the well-known Heitger carburetor, and thcrefore require no special description, except in so far as they relate to the particularfeatures constituting my present invention.

The general structure and arrangementoi the parts as well as the novel lures involved therein. are more pal-tn scribed in my companion app. n] no. 702,6l6.' The valve ll) for controlling the auxiliary air inlet is u'iountcd on a spring -11 as shown and described in my companion application No. 702,612.

. The mixing chamber has a suction tube the upper end of said 1::

threaded connection a casting 11 which embodies the connection with the air and gasolcne supply, and, the spray nozzle 12 is mounted therein. Said spray nozzle has a conical seat for the needle valve 13 and said needle valve is formed with longitudinal grooves in its sides through which the gasolcnc is sprayed into the carburcting cham her. as is usual. Said needle valve 13 comprises a stem ha ing a head 14 which is mounted in a vertical chamber in a cylinder 16 which is formed with a screw-threaded shank 17 that screws through the aperture in casing A. Theperiphery of said cylinder 16 is formed with a ribbed surface with which a spring detcnt 15 engages to prevent accidental turning. A screw cap 18 is mounted in the upper end of cylinder 16 adapted to limit the movement of head or pistonl l and said screw cap is also formed, with a. periphery having notches or ribs. with which another spring detent 19 engages. to prevent accidental turning. The upper end of too stem of theneedle' valve 13 is formed with a longitudinal bore ex- 80 tending to a point within the mixing cham- 1 her and transverse openings 20 lead radially therefrom into said mixing chamber.

in operation the needle \alve is adiusted through the medium of the cylindrical head '16 to regulate the amount of gasolene that may be normally drawn through the grooves in the periphery of the stem through the spray nozzle. Upon the speed of the engine increasing to a point wherejhe suction will be sullicient. the air pressure upon pistr-n ll through air vents will operate to elevate. said stem and needle valve 13 to thedimit ot' the movement allowed by the :ul iustua-nt oi screw cap 18. so that a greater ouant lv oi" so'lcne will be allowed to pass iln-unogh said spray nozzle. As the speed (it the engine dec eases. the weight of the slum will (mis e stem to tall and the v ope-nil ly cl red and the sup- 5am matically rcgw v needed for the speed lug a casing with iuunbcrs. a spray *ontrolliug the liil l. a piston on d e alve. :r chamher for said piston moboted to be vertically no means for adjustingsaid needle valve to secure a normal opening of fixed area, means "for securing 'the part as adjusted, additional means for lifting said, needle valve oymrated by the suction of the engine, means for limiting said lifting movement, and means for fixing the adjustment of said limiting means, substantially as set forth.

3. A c'arbureter comprising a casing having cal-bursting and mixing chambers, means for regulating the feed of gasolene consisting of a spray nozzle, a needle valve for regulating the openings through. said;

spray nozzle, a piston'chamber adjustably secured 1n the casing,. a piston connected' with the stem of said needle alve and mounted in said piston chamber, the stemof said needle valve being formed Witha perforation to establish communication from the mixing chamber to the piston chamber on one side of the piston and a vent being formed from said opposite side of said piston,

piston chamber on the whereby the feed of gasolene may be regulated autogine, substantially as set forth.

In Witness whereof, I have hereunto set In hand and seal at Indiana olis Indiana this twenty-first day of May, A. D. nine-- teenhundred and'twelve.

FRANK H. HEITGER. [L.- 8.] lVitnesses: 5

E. W. BRADFORD,

' A. C. RICE.

matically to conform to the speed of the en-

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