Perforator with backer and translating perforating devices
OwnerBrian J. Kwarta, James Douglas Shifleyinventors
Life of this patent
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Abstract
Apparatus for perforating a moving receiver includes a backer member across a sheet area. Perforating devices each have two perforating wheels selectively pressed towards the backer member. A drive mechanism rotates the backer member or the perforating wheels to perforate the moving receiver. A transport mechanism selectively moves the perforating devices perpendicular to the receiver feed direction. A controller receives a job specification including two or more specified perforation locations and causes the transport mechanism to disengage two or more perforating devices, laterally position them to perforate the moving receiver in the specified perforation locations, and then engage them to perforate.
Claims8
Apparatus for perforating a moving receiver comprising:
- a backer member extending across a width of a sheet area;
- a plurality of perforating devices, each comprising two parallel perforating wheels and an engagement device adapted to selectively press the perforating wheels towards the backer member in a first condition to define two perforating areas and a chad area arranged laterally between the plurality of perforating areas, or to selectively retract the perforating wheels from the backer member in a second condition;
- a drive mechanism for rotating the backer member or the perforating wheels of two or more of the plurality of perforating devices so that the rotating perforating wheels engage the moving receiver to perforate the moving receiver parallel to its feed direction in the perforating areas, whereby one or more proto-chads are defined on the moving receiver;
- a transport mechanism for selectively moving the plurality of perforating devices perpendicular to the feed direction of the moving receiver, and for controlling the respective engagement devices of each of the plurality of perforating devices;
- and
- a controller for receiving a job specification including two or more specified perforation locations and causing the transport mechanism to:
- operate the engagement devices of a selected two or more of the plurality of perforating devices in the second condition;
- then
- laterally position the selected two or more perforating devices to perforate the moving receiver in the two or more specified perforation locations;
- then
- operate the engagement devices of the selected two or more perforating devices in the first condition.
Dependencies are inferred from the claim text.