US PATENT SUBCLASS 234 / 86
.~.~.~ Biased interposer and senser

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}
79  DF  .~ With means to feed pattern or pattern sensing means {5}
84  DF  .~.~ Interposer movable by senser {2}
86.~.~.~ Biased interposer and senser

DEFINITION

Classification: 234/86

(under subclass 84) Device including means which continually tends to move an interposer* toward or from its effective position and simultaneously to move the associated sensing means toward its most advanced (i.e., indicium-responsive) position.

(1) Note. The mechanism typically comprises cyclically-actuated means to retract the sensers from engagement with the pattern, against the force of the biasing means.

(2) Note. Fig. 16 illustrates typical mechanism of this subclass. Pattern P and workpiece W are usually advanced in step-by-step manner past the senser(s) S and tool(s) T. S is biased by a weak spring toward contact with P, and is retracted therefrom after each sensing operation by a reciprocating bail B. When, in any cycle of operation, senser S detects a hole in P (by entry therein) it causes sufficient movement of its interconnected interposer I to control the conditioning of tool T for cutting or noncutting, as desired. [figure] [caption]Fig. 16. BIASED INTERPOSER AND SENSER (subclass 86).