Filament-type weed-grass trimmer

Claim 1

An improved filament-type weed-grass trimmer of the type in which a frame mounted drive means rotates a hollow output shaft having a conduit for the passage of filament therethrough from a non-rotatable supply to one end of said shaft, to a head affixed to the other end of said shaft and rotatable therewith, said head having an arcuate enclosed bore therethrough, one end of said bore substantially aligned and in open communication with the conduit of the hollow output shaft and the other end of said bore projecting outwardly from the head; means for positively feeding defined increments of filament from said supply through said conduit in said hollow output shaft through said bore and thence outward of said head sufficient distance for trimming, said means for positively feeding defined increments of filament fed to said head comprising: an annular cup mounted to the end of the fixed drive means opposite the head for holding a supply of filaments; a distributor rotatably mounted to the center of the annular cup, and having a central opening therethrough in substantial alignment and in open communication with said one end of the hollow output shaft, and further having at least one groove in the head of said distributor for receiving and guiding filament from the annular cup to the distributor through said conduit in said hollow output shaft through said bore and thence outward of said head; and means for rotating the distributor to allow positive feed of the defined increment of filament passing from the annular cup to the distributor.