EXTERNALLY VENTED PRIMER FOR FLOAT-TYPE CARBURETORS

A primer for an internal combustion engine carburetor (10) including a variable volume air chamber (50) which is provided with a flexible resilient bulb member (51). The bulb member (51) includes a protruding nipple (55) including an aperture (56) therein for admitting air into the chamaber (50). In...

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Bibliographische Detailangaben
Hauptverfasser: THOMAS G. GUNTLY, CURTIS L. SCHULTZ
Format: Patent
Sprache:eng
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Zusammenfassung:A primer for an internal combustion engine carburetor (10) including a variable volume air chamber (50) which is provided with a flexible resilient bulb member (51). The bulb member (51) includes a protruding nipple (55) including an aperture (56) therein for admitting air into the chamaber (50). Inside the chamber (50) a protrusion (58) is provided including a sloping surface (60) with an aperture (62) therein. A passage (64) connects the aperture (62) in the sloping surface (60) to the fuel supply bowl (20). When an operator abruptly depresses the flexible resilient bulb member (51), a volume of air is abruptly displaced from the chamber (50) through the passage (64) and into the fuel supply bowl (20) to force fuel from the bowl (20) through a nozzle (40) and into a fuel/air mixture passageway (44) of the carburetor (10).