Sheet-material associating – Associating or disassociating – Sheet associating
Patent
1975-10-06
1977-01-04
Burr, Edgar S.
Sheet-material associating
Associating or disassociating
Sheet associating
B65H 32045
Patent
active
040008894
ABSTRACT:
A cam operated phasing mechanism for a rotary drum collator is described. The rotary drum collator comprises a rotatably mounted drum having pockets for holding sheet material, and an adjacently rotatably mounted withdrawing mechanism for withdrawing sheets from the pockets as the drum and the withdrawing mechanism rotate in a predetermined phase relationship. The predetermined phase relationship between the rotation of the drum and the rotation of the withdrawing mechanism is varied in order to change the phase relationship to accommodate for the depletion of the sheet material from the individual pockets. The change in phase relationship is accomplished by a dual surface cam and double cam follower combination which provides for a simultaneous unitized increase and decrease in corresponding effective working lengths of a drive chain interconnected between the drum and the withdrawing mechanism. This construction provides for a positive increase and decrease in the working lengths of the chain in order to eliminate backlash in an otherwise free system, and eliminates the need for spring-loading any portion of the drive chain which would otherwise not be positively controlled with respect to changes in the aforementioned effected working lengths.
REFERENCES:
patent: 2089861 (1937-08-01), Schlensker
patent: 2940750 (1960-06-01), Mestre
patent: 3540721 (1970-11-01), Blowsky
Byrne Leroy H.
Fassman Arnold
Mol Hans C.
Burr Edgar S.
Heinz A.
Pitney-Bowes Inc.
Salzman Robert S.
Scribner Albert W.
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