Strip-shaped knife for use in punching machines and the like

Details Strip-shaped knife for use in punching machines and the like Strip-shaped knife for use in punching machines and the like

1986-08-12

1988-03-08

Yost, Frank T.

Cutting

Tool or tool with support

Cutting couple type

76107C, 83652, 83697, B26F 144

Patent

active

047292741

ABSTRACT:
A punching tool wherein the knife is a strip of steel and has a cutting edge flanked by two mutually inclined concave facets. The facets are disposed between the cutting edge and two lateral surfaces which have concave portions adjacent the respective facets. Those portions of the knife which are disposed between the facets and the concave portions of the respective lateral surfaces are rounded.

REFERENCES:
patent: 1837524 (1931-12-01), Braden
patent: 2211213 (1940-08-01), Lindholm
patent: 2276376 (1942-03-01), Deubel
patent: 3411208 (1968-11-01), Malm

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