Cutting tool

Cutlery – Pipe and rod cutters – Adapted to cut pipe or rod longitudinally

Patent

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Details

30250, B23D 2106, B26D 316

Patent

active

043121276

ABSTRACT:
A cutting tool comprising a movable blade having a ratchet wheel portion, a movable handle reciprocally movable to cause a drive pawl in engagement with the wheel portion to intermittently drive the movable blade in a cutting direction, and a retaining pawl in engagement with the wheel portion to prevent the movable blade from turning in a direction opposite to the cutting direction under the action of an elastic pulling member during the turn of the movable handle. After a workpiece supported on a receiving portion of a stationary handle has been cut, the movable handle is turned in the opposite direction slightly beyond the range of its cutting movement to disengage the pawls from the ratchet wheel portion and cause the elastic pulling member to return the movable blade to its fully opened position.

REFERENCES:
patent: 3210844 (1965-10-01), Tontscheff
patent: 3885309 (1975-05-01), Lund
patent: 4084317 (1978-04-01), Nakamura
patent: 4094064 (1978-06-01), Nishikawa
patent: 4176450 (1979-12-01), Muromoto
patent: 4178682 (1979-12-01), Sadauskas
patent: 4186484 (1980-02-01), Tanaka

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