Cutlery – Cutting tools – With blade moving means
Patent
1984-07-16
1989-08-01
Yost, Frank T.
Cutlery
Cutting tools
With blade moving means
30347, A01D 5518
Patent
active
048522589
ABSTRACT:
Apparatus for cutting vegetation with a rotatable head carrying a non-metallic cutting line extended into a cutting plane. Additional line is extended from a supply line coil within the head into the cutting plane without independent operation action. A mechanism in the head feeds a certain incremental length of line whenever the free end of the cutting line is reduced to this length by wear, or otherwise. After the cutting line length is extended to its original preset length, the cutting line is secured automatically against further extension from the head. The incremental line feeder mechanism is actuated by sensing an operating condition of the head, e.g., angular velocity of rotation.
REFERENCES:
patent: 41388109 (1979-02-01), Pittinger, Sr. et al.
patent: 3928911 (1975-12-01), Pittinger, Jr.
patent: 4035915 (1977-07-01), Pittinger
patent: 4104796 (1978-08-01), Sheldon
Folkerts Michael D.
White Consolidated Industries, Inc.
Yost Frank T.
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