US PATENT SUBCLASS 83 / 625
.~.~.~ By relatively movable fixed axis levers

Current as of: June, 1999
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83 /   HD   CUTTING

523  DF  MEANS TO DRIVE OR TO GUIDE TOOL {35}
613  DF  .~ With simple rectilinear reciprocating motion only {13}
624  DF  .~.~ With application of force to opposite ends of tool supporting crosshead {2}
625.~.~.~ By relatively movable fixed axis levers

DEFINITION

Classification: 83/625

(under subclass 624) Apparatus wherein the force is applied by means of pivoted oscillating arms which have different paths of motion than that of the tool or tool support, and which are pivoted on centers which are always in a fixed position with respect to the path of the tool or tool support.