Safety device having machine drive cam control

Details Safety device having machine drive cam control Safety device having machine drive cam control

1979-03-28

1981-07-21

Downey, Kenneth

192 clutches and power-stop control

Stop mechanism

Safety device

74613, F16P 304

Patent

active

042793351

ABSTRACT:
A hollow clearance indicator is mounted for reciprocable movement toward and away from a fixed machine work area. A movable work-forming element is received in an aperture of the clearance indicator to effect an operation on a workpiece in the machine work area upon actuating a drive output of the machine to drive the movable element into engagement with the workpiece. The clearance indicator is drivingly connected to a safety device which monitors the work area to ensure it is clear of any obstacles, particularly an operator's fingers. The safety device features a rotary cam control drivingly connected between the clearance indicator and a manually-controlled drive input for selectively controlling operation of the drive output in relation to clearance indicator movement.

REFERENCES:
patent: 1103437 (1914-07-01), Schade, Jr.
patent: 1212319 (1917-01-01), Bretsnyder
patent: 1542708 (1925-06-01), Larson
patent: 3487182 (1969-12-01), Grundy

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