US PATENT SUBCLASS 234 / 33
.~.~.~ With means to check on tool actuation

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

22  DF  WITH MEANS TO IMPOSE RANDOMLY ACTUATED CONTROL OF AUXILIARY-OPERATION {3}
30  DF  .~ Stopping means {1}
32  DF  .~.~ Upon detection of machine defect or misoperation {1}
33.~.~.~ With means to check on tool actuation {1}
34  DF  .~.~.~.~> With verifier (data comparator)

DEFINITION

Classification: 234/33

(under subclass 32) Device provided with means which responds to tool actuation or senses characteristics of the workpiece subsequent to tool actuation and which initiates said signal or impulse in response to (1) a failure of the device to follow a predetermined type of tool operation, or (2) the correct completion of such operation, which signal or impulse governs the continuance of operation of the machine or of a part thereof.

(1) Note. For example, the means may be used to check the presence of a punched hole in each column of a card before it leaves a card punch machine.

(2) Note. A check on tool actuation includes, but does not require, verification of the correctness of the punching operations, for which see subclass 34, indented hereunder.

(3) Note. The term "stopping" in subclasses 30+ is broadly construed to embrace a change in the mode of operation of the device which involves the cessation of a particular function even though parts concerned may still have motion.