Sheet feeding or delivering – Delivering – By pneumatic conveyor
Patent
1976-03-11
1977-07-05
Schacher, Richard A.
Sheet feeding or delivering
Delivering
By pneumatic conveyor
271217, B65H 3110
Patent
active
040335798
ABSTRACT:
A stacker includes a rectangular housing within which there is located a vertically movable platform. A vertical wall of the housing includes, along an upper region, an orifice through which sheets may be fed into the housing, and each of the other three vertical walls includes a series of fluid outlet ports, at the same level as the orifice, each series of ports being coupled to a vacuum source. The top of the housing includes an array of fluid inlet ports which are coupled to a fluid source. The fluid source cooperates with outlet ports and vacuum sources to create a fluid stream in the housing which biases a sheet entering through the orifice, selectively, against one of two corners in the housing. Sheets in the housing are also biased towards the platform by movable spring members extending into the housing through the orifice. The spring members are moved out of the way of a sheet entering the housing through the orifice by a detector which controls a solenoid yoked to the spring members. Tension in the springs is detected to position the platform in the housing so that the top-most sheet supported by the platform is located at a predetermined level.
REFERENCES:
patent: 2645480 (1953-07-01), Long
patent: 2981411 (1961-04-01), Azari
patent: 3243181 (1966-03-01), Lyman
patent: 3834799 (1974-09-01), Blosser
patent: 3866906 (1975-02-01), Berry
patent: 3918706 (1975-11-01), Craft
Cassano James R.
Hamlin Thomas J.
Smith Richard E.
Stange Klaus K.
Nieves Carlos
Ralabate James J.
Schacher Richard A,.
Xerox Corporation
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