Method and apparatus for feeding envelopes to a printing press

Details Method and apparatus for feeding envelopes to a printing press Method and apparatus for feeding envelopes to a printing press

1987-03-30

1988-11-22

Schacher, Richard A.

Sheet feeding or delivering

Delivering to stack and feeding therefrom

With sheet sensor for selective location

271124, 271212, B65H 502

Patent

active

047860405

ABSTRACT:
A vertical stack of envelopes is produced adjacent the infeed end of a printing press, for removal one at a time by envelope infeed mechanism of the printing press, the stack being maintained by adding envelopes one at a time to the bottom end of the stack when the height of the stack or number of envelopes in the stack is reduced to a predetermined magnitude, the rear end of the stack being elevated to facilitate insertion of added envelopes to the bottom of the stack. The envelopes are removed one at a time by operation of the envelope infeed mechanism of the printing press. The addition of envelopes to the stack is stopped when the height of the stack or number of envelopes in the stack is increased to a predetermined magnitude.

REFERENCES:
patent: 3998451 (1976-12-01), McInerny
patent: 4369959 (1983-01-01), Hornbuckle
patent: 4478400 (1984-10-01), Commers

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