Cutlery – Cutting tools – Plural cooperating blades
Patent
1979-05-24
1981-08-04
Peters, Jimmy C.
Cutlery
Cutting tools
Plural cooperating blades
83916, B26B 1500
Patent
active
042814596
ABSTRACT:
A hand-held nibbling tool for sheet metal or other thin material is provided with a reciprocating punch which on its upward stroke moves the metal to be chipped against a readily replaceable cutting die positioned in a die holder attached to the lower end of the tool. The tool is provided with a conventional reciprocating mechanism driven in a known manner by a conventional air or electric motor. The reciprocating punch is connected to the reciprocating mechanism by a piston rod supported for a substantial part of its length in a sleeve within the die holder. The said die holder, moreover, is provided with one or more passages extending upwardly from the die and outwardly of the die holder so as to permit the chips thrown upwardly by the action of the punch against the die to be removed from the nibbling area. The die itself has an internal opening cooperating with the aforesaid passages. Means may also be provided for guiding the tool along a predetermined path in the sheet metal as nibbling proceeds; additional means may be provided for maintaining a proper relationship between the nibbling tool and the sheet metal to be cut for better control in the nibbling of thin sheets.
REFERENCES:
patent: 3025600 (1962-03-01), Leibinger
patent: 3728927 (1973-04-01), Pfleiderer
patent: 3759130 (1973-09-01), Patterson
patent: 3785052 (1974-01-01), Yermis
Peters Jimmy C.
Stempler Kenneth J.
Widder Corporation
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