Method and apparatus for sharpening end of filament in vegetatio

Details Method and apparatus for sharpening end of filament in vegetatio Method and apparatus for sharpening end of filament in vegetatio

1976-04-14

1977-09-13

Whitehead, Harold D.

Metal tools and implements, making

Tool sharpeners

Cutting

30138, 51250, 56295, 76101A, B21K 1900

Patent

active

040474550

ABSTRACT:
An abrasive or other filament-working member is mounted at the sweep circle of a vegetation trimmer filament for progressively sharpening the end of the filament and removing excess filament during operation of the vegetation filament-trimmer; the filament working member may include means causing the filament to heat.

REFERENCES:
patent: 973667 (1910-10-01), Kelling
patent: 1850624 (1932-03-01), Haines
patent: 2045187 (1936-06-01), Hurd
patent: 2447617 (1948-08-01), Nelson
patent: 3831278 (1974-08-01), Voglesonger

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