Web indexing apparatus and overprinting machine

Details Web indexing apparatus and overprinting machine Web indexing apparatus and overprinting machine

1980-07-15

1982-06-15

Christian, Leonard D.

Advancing material of indeterminate length

By intermittent material-mover

Adjustable feeder

101227, B65H 1726

Patent

active

043346456

ABSTRACT:
A label web overprinting machine in which the label web is indexed through the apparatus by two opposed rollers, one of which has a recess in its periphery defining a step and the other of which is movable through a small distance to form a nip for drawing the web forwardly through a printing station of the machine.
A solenoid controls the movement of the movable roller and by a machine cycle operated switch the solenoid is energized to bring the one roller into substantial contact with the other at an instant when the recess of the one roller is directed towards the other roller. Immediately the step of the roller contacts the other roller, the web is indexed forward and the solenoid is subsequently deenergized by a photo-electric cell arrangement arranged to detect a particular indicia on a label or the downstream edge of a given label.

REFERENCES:
patent: 2996001 (1961-08-01), Schlegel et al.
patent: 3094925 (1963-06-01), Huber
patent: 3176895 (1965-04-01), Kurth
patent: 3887627 (1975-04-01), Boase et al.

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