초록 ▼

A combined engine flywheel and centrifugal clutch driver for a rotary lawn mower blade. Two heavy circular plates, as a quarter-inch steel plate, of large diameter, e.g., six inches, are riveted together against three peripherally spaced pairs of spacer slugs stamped from the same material, and agai

A combined engine flywheel and centrifugal clutch driver for a rotary lawn mower blade. Two heavy circular plates, as a quarter-inch steel plate, of large diameter, e.g., six inches, are riveted together against three peripherally spaced pairs of spacer slugs stamped from the same material, and against a central shouldered hub. This forms a rotor of sufficient rotational inertia when mounted on the depending shaft of a mower engine to provide the principal flywheel effect for an engine having a relatively lightweight magneto and fan rotor at its top end.

대표청구항 ▼

Lawn mower mechanism, comprising a combined clutch and flywheel rotor including a hub adapted for rotation about an axis, a pair of heavy, generally circular, metal plates mounted on said hub in spaced parallel relation in planes normal to said axis, a plurality of spacer weights mounted between sai

Lawn mower mechanism, comprising a combined clutch and flywheel rotor including a hub adapted for rotation about an axis, a pair of heavy, generally circular, metal plates mounted on said hub in spaced parallel relation in planes normal to said axis, a plurality of spacer weights mounted between said plates at angularly spaced points about and adjacent the periphery thereof to add mass at the periphery of the rotor, the plates being secured together at said weights so as to fix the weights in place and to secure the plates against the weights as spacers, a plurality of centrifugal clutch shoes mounted at angularly spaced positions about the periphery of said rotor, between said spacer weights, and means disposed axially between the plates for connecting the shoes in operative relation with the rotor, and a vertical axis lawn mower engine having a depending output shaft, the rotor being mounted on the depending shaft, a clutch drum mounted coaxially with said shaft and surrounding the rotor so as to be engaged by said shoes, and a blade carried with said drum, said rotor having large mass sufficient to supply a major portion of the flywheel mass for the engine.