US PATENT SUBCLASS 234 / 77
.~.~ Tool actuation blocked by pattern

Current as of: June, 1999
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234 /   HD   SELECTIVE CUTTING (E.G., PUNCHING)

59  DF  WITH MEANS TO INITIATE TOOL SELECTION BY SENSING PATTERN INDICIA OR CONFIGURED MACHINE ELEMENT {11}
76  DF  .~ Sensing by tool directly engageable with pattern {2}
77.~.~ Tool actuation blocked by pattern

DEFINITION

Classification: 234/77

(under subclass 76) Device including yieldable individual tool-actuating power trains so arranged that the tools which do not contact said pattern are forced into cutting relationship with a workpiece.

(1) Note. The pattern functions as a mask or stencil to block the operation of unselected tools.

(2) Note. See Fig. 1 (described in section II, (2) Note) for illustrative mechanism.