Numbering throw-off for collator

Details Numbering throw-off for collator Numbering throw-off for collator

B - Operations, Transporting

41

L

101/36

B41L 45/00 (2006.01) B41K 3/10 (2006.01) B42C 1/12 (2006.01)

Patent

CA 1081038

NUMBERING THROW-OFF FOR COLLATOR ABSTRACT OF THE DISCLOSURE A low-cost, completely self-contained numbering unit for in-line web collators is provided which includes fully mechanical throw-off apparatus for selectively sequential deactivating the unit in a manner insuring proper sequential numbering of forms or the like, notwithstanding intermittent temporary interruptions of web flow through the unit. The num- bering unit hereof preferably includes a plurality of rotatable numbering machines each having an indexing arm, a pivotal cam engageable with the respective arms and shiftable between index- ing and non-indexing positions, and control means for allow- ing such cam shifting only under circumstances ensuring main- tenance of proper numbered sequence between forms or the like as they are produced. The control means preferably includes a rotatable, recessed control cam coupled to the numbering machine mounting shaft, along with a cooperating projection extending from a shiftable plate coupled to the indexing cam shaft; move- ment of the plate in a manner to pivot the indexing cam between the indexing and non-indexing positions thereof is thus pre- cluded unless the control cam is rotated to a position permitting clearance of the plate projection therepast. The indexing cam is thus movable only when the numbering machines of the unit are in respective preset rotational position so that misnumbering of the forms is prevented. The plate is operated by means of a manual control knob, and is provided with biasing springs and limit means for facilitating smooth, measured movement thereof so that the indexing cam can be quickly and accurately shifted.

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