Guard-moving system in a cutting apparatus

Cutting – Interrelated tool actuating means and guard means – Work guard

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Details

83478, 834713, 83490, B23D 4504, B27B 520

Patent

active

047994169

ABSTRACT:
A cutting apparatus comprising a swinging cutter unit which is pivotally coupled through a first shaft to a stationary working table so as to be swingable about the first shaft between its raised resting position and its lowered cutting position. The swinging cutter unit includes a motor-driven circular saw-blade fixedly mounted on a second shaft coupled to a drive motor, a housing for partially encasing an upper side portion of the circular saw-blade and supporting the second shaft so that the circular saw-blade is rotatable about the second shaft in response to operation of the drive motor, and a blade guard supported by the housing to be rotatable about the second shaft to expose and cover the saw-blade. The blade guard is biased by means of a spring so as to cover the saw-blade and has an engaging device at a portion of the outer surface thereof. An elongated arm is provided such that one end portion thereof is fixedly secured to a stationary portion of the cutting apparatus and the other end portion thereof is positioned near the engaging device. At the other end portion is provided a third shaft engaged with the engaging device so that the blade guard is rotated about the second shaft in response to a swinging movement of the cutter unit to expose the saw-blade when the cutter unit is moving to the cutting position and cover the portion thereof when moving to the resting position.

REFERENCES:
patent: 4318324 (1982-03-01), Hall et al.
patent: 4343213 (1982-08-01), Drixler
patent: 4581966 (1986-04-01), Kaiser et al.

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