US PATENT SUBCLASS 234 / 71-- .~.~ Means for timing the tool actuation

US PATENT SUBCLASS 234 / 71
.~.~ Means for timing the tool actuation

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}
67	DF	.~ With means to modify effect of pattern data {4}
71		.~.~ Means for timing the tool actuation

DEFINITION

Classification: 234/71

(under subclass 67) Device in which the alteration is brought about by means effective to interpose variable time delays between the pattern-sensing and tool-actuating functions in successive cycles.

(1) Note. The subject matter of this subclass (71) and the following subclass (72) concerns generally the relocation (or suppression) of data from certain portions of a pattern, while preceding subclasses 68 and 69 deal generally with modification of the significance of the data itself (e.g., the relocation of punched holes in a column).

(2) Note. A typical device of this subclass effects the "standardization" of a perforated music roll such that all perforations in the reproduced roll have locations and lengths expressable in whole multiples of a unit space.