US PATENT SUBCLASS 76 / 18
.~.~ Blow-controlled


Current as of: June, 1999
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76 /   HD   METAL TOOLS AND IMPLEMENTS, MAKING

12  DF  FILE CUTTING {9}
17  DF  .~ Idle cutter, hammer-operated {1}
18.~.~ Blow-controlled


DEFINITION

Classification: 76/18

Machines in which the cutter is supported over the blank, usually by a spring, and is struck by a power-operated hammer, the force of the blow being increased or diminished, usually automatically in conformity to the width or thickness of the file-blank as it is fed beneath the cutter.