Machine with finger protection guard

Details Machine with finger protection guard Machine with finger protection guard

1980-04-03

1982-08-10

Bell, Paul A.

Elongated-member-driving apparatus

With randomly actuated stopping or disabling means

227 61, 227124, 227 8, B21J 1528

Patent

active

043434231

ABSTRACT:
A machine for affixing e.g. snap fasteners, rivets and the like to workpieces has a stationary lower tool and a downwardly movable cooperating upper tool. To protect the finger of an operator against injury by the tools the machine also has a finger guard positioned to move ahead of the descending upper tool. The finger guard is mounted on two parallel upright links which are longitudinally shiftable relative to each other. When the finger guard encounters an obstacle this results in shifting of one link relative to the other and two normally engaged contacts in an electrical circuit for the machine drive move apart, interrupting the circuit and shutting down the machine drive.

REFERENCES:
patent: 2199286 (1940-04-01), Fischer
patent: 4013277 (1977-03-01), Schmitt
patent: 4052040 (1977-10-01), Ogden

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