Apparatus with automatic line feeding

Details Apparatus with automatic line feeding Apparatus with automatic line feeding

1985-07-10

1987-04-28

Schmidt, Frederick R.

Cutlery

Cutting tools

With blade moving means

56 125, B26B 700, A01D 4608

Patent

active

046602860

ABSTRACT:
A line trimmer for cutting vegetation has features to enable automatic advancement of line increments while rotating. The trimmer has a housing with an aperture on its periphery. A spool coiled with a flexible cutting line is located in the housing. The free end of the line extends out the aperture into a cutting plane. A set of drive members are located in the housing near the center in a circular array. A drive link is carried in the housing radially outward from the drive members. The drive link will move into contact with the drive members to lock the spool and housing together for rotation. Increased centrifugal force urges the drive link outward, allowing the spool and housing to slip relative to each other to feed out additional line. Stop members are located on the inner side of the housing outer wall. These stop members stop further slippage and force the drive link back into engagement with the drive members.

REFERENCES:
patent: 4104796 (1978-08-01), Sheldon
patent: 4254550 (1981-03-01), Satoh
patent: 4285127 (1981-08-01), Zerrer et al.
patent: 4347666 (1982-09-01), Moore
patent: 4426780 (1984-01-01), Foster
patent: 4483069 (1984-11-01), Moore

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