B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
270/173
B65H 3/08 (2006.01) B65H 1/06 (2006.01)
Patent
CA 1228876
HOPPER AND FEEDER APPARATUS AND METHOD ABSTRACT OF THE INVENTION An envelope hopper (20) is capable of selectively handling stacks of short envelopes (SE), stacks of long envelopes (LE), or stacks of envelopes of intermediate dimensions. The envelope stack rests on a table frame (26) in such a manner that at least a portion of a bottom-most envelope overhangs a breaker plate edge (32). At appropriate points in an machine cycle suction cups (64) rise from below a breaker plate (30) to attract the underside of the overhanging envelope and then fall to deflect the attracted envelope. Rotating arcuate surfaces (202) of segmented rollers (66) thereafter make contact with the underside of the deflected envelope. Cooperating rollers (72) are pivoted into a position to contact the upraised of the deflected envelope, to engage the deflected envelope between the rollers (72) and the driven segmented roller (66), and to apply a pressure which facilitates displacement of the envelope from the stack by the application of rotational motion from the segmented roller (66). The extent to which the envelope is fed from the stack and into awaiting gripper jaw (52) is dependent upon control means 80 which govern the motion of the rollers (72), as well as upon means (264) provided to selectively adjust the distance separating the hopper (20) from transportation discharge means (54). The hopper (20) is further provided with adjustable stack alignment guide means (40) for accommodating envelope stacks of differing envelope sizes.
472584
Bell & Howell Company
Kirby Eades Gale Baker
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