Machine safety guard

Details Machine safety guard Machine safety guard

1980-06-26

1982-11-09

Dorner, Kenneth

Machine element or mechanism

Elements

Guard mechanisms

74616, 74104, F16P 304, F16P 324

Patent

active

043578390

ABSTRACT:
Operator access to the zone at which workpieces are struck in a drop hammer is temporarily but reliably blocked by a sturdy mechanical guard throughout every period when the hammer may commence and complete its fall; a unique physical linkage, between the guard and a safety-dog lever which must be manually turned in order to release the hammer, insures that the safety guard must have been shifted from an out-of-the-way position into a protective orientation before the hammer can drop.

REFERENCES:
patent: 957474 (1910-05-01), Parkes
patent: 997228 (1911-07-01), Bartholomew et al.
patent: 1301042 (1919-04-01), Dicks
patent: 1346872 (1920-07-01), Bartholomew
patent: 1655271 (1928-01-01), Ischinger
patent: 1906778 (1933-05-01), Udal
patent: 1960930 (1934-05-01), Thomas
patent: 2220036 (1940-10-01), Fitzgerald et al.
patent: 2528565 (1950-11-01), Weber
patent: 3700062 (1972-10-01), Garnett
patent: 4023423 (1977-05-01), Johne et al.

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