Sheet feeding or delivering – Delivering – By endless conveyor
Patent
1974-07-19
1976-03-23
Blunk, Evon C.
Sheet feeding or delivering
Delivering
By endless conveyor
271216, 271 69, B65H 2966
Patent
active
039456358
ABSTRACT:
A stand-alone power stacker for envelopes and similar type planar articles is provided wherein two end to end arcuately adjustable belt conveyors are adapted to be driven at automatically varying relative speeds depending on load conditions. The machine drive motor is controlled by a sensing means that detects the presence of each envelope that is delivered to the upstream end of the stacker and a time delay control circuit is provided to delay a termination of operation of said motor for a selected time period after said sensing means has completed a sensing operation. The arcuate adjustability of the outer ends of said conveyors permits the upstream one of said conveyors to receive envelopes, etc. from various heights and the downstream one of said conveyors to generate envelope stacks of desired compactness or density.
REFERENCES:
patent: 2233151 (1941-02-01), Welk
patent: 3321202 (1967-05-01), Martin
patent: 3336028 (1967-08-01), Schonmeier
patent: 3378254 (1968-04-01), Eichorn
patent: 3527460 (1970-09-01), Lopez
patent: 3542362 (1970-11-01), Brockmuller et al.
patent: 3565423 (1971-02-01), Kluth
patent: 3700232 (1972-10-01), Wiegert et al.
patent: 3752043 (1973-08-01), Rapparlie et al.
patent: 3776544 (1973-12-01), Watson et al.
Blunk Evon C.
Pitney-Bowes Inc.
Saifer Robert
Scribner Albert W.
Soltow, Jr. William D.
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