Metal deforming – By three or more coacting relatively movable tools – With paired coplanar tool-faces
Patent
1974-02-27
1976-07-27
Mehr, Milton S.
Metal deforming
By three or more coacting relatively movable tools
With paired coplanar tool-faces
72705, 72465, 72481, 72479, B21D 112, B21D 2500, B21J 718, B21J 1302
Patent
active
039712443
ABSTRACT:
An impact tool for dressing metal sheets, particularly for repairing damaged vehicle bodies, has a tool carrier, in a bore of which there are guided at least two jaws separated from each other in the rest position of the tool by resilient elements, e.g. springs or rubber elements. The jaws are guided for a limited stroke between a rigid abutment formed by the front face of the tool carrier and a stop formed by a bolt fixed to the tool carrier and intersecting holes of the stems of the jaws with play. The jaws are loaded by at least one resilient element, e.g. a helical spring, abutted with its one end against the end of the bore of the tool carrier and with its other end against the inner end of each jaw. Surfaces having portions diverging in direction to the outer ends of the jaws force the jaws radially inwardly when the jaws hit the metal sheet to be treated.
REFERENCES:
patent: 385540 (1888-07-01), Bierhart
patent: 2010996 (1935-08-01), Junkers
patent: 2407573 (1946-09-01), Nelson
patent: 2428173 (1947-09-01), Moore
patent: 2428675 (1947-10-01), Moore
patent: 2623426 (1952-12-01), Daniels
patent: 2627771 (1953-02-01), Phillips et al.
patent: 2906150 (1959-09-01), Stewart
patent: 3332271 (1967-07-01), Salt
patent: 3340721 (1967-09-01), Salt
Gurley Donald M.
Mehr Milton S.
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