(under subclass 202) Device in which the synchronous relationship between work moving and tool moving means is disrupted during or after each tool cycle in such manner that the reestablishment of such relationship and initiation or continuation of a succeeding cycle requires the intervention of an external force or stimulus.
(1) Note. Unicyclic operation is characterized by the requirement of two inputs: one to supply actuating power and the other to intervene and supply an unlocking force without which the machine could not resume operation, as distinguished from the usual machine which operates whenever power is supplied to it. Some type of "nonrepeat" mechanism is required as part of the invention.
(2) Note. Many patents disclosing machines capable of unicyclic operation are to be found in following subclasses, where the means which confers such capability is not claimed. See particularly the stamp or ticket dispensers in subclasses 208, 210, 224, 231+, 242+.
SEE OR SEARCH THIS CLASS, SUBCLASS:
69, for stopping means effective upon completion of predetermined number of tool cycles.
252, for supplemental manual feed required to complete the cutting cycle. 283, for one-revolution clutch in tool actuating means.
484, for unicyclically movable carrier for rotatable disc tool.
524+, for a device for moving a tool through one cutting stroke only.
