Sheet feeding or delivering – Delivering – Multiple discharge
Patent
1991-05-07
1992-12-08
Schacher, Richard A.
Sheet feeding or delivering
Delivering
Multiple discharge
271294, B65H 3124
Patent
active
051691442
ABSTRACT:
A sheet sorting apparatus of the shifting tray type employs a pair of helical coils, each coil being predominantly wound with a number of turns of a first pitch, and containing at least one turn of a second, coarser pitch. The ends of each coil are held by through holes of a center rod that extends along the longitudinal axis of each coil, a coil and center rod thus forming a coil assembly. Each center rod is rotationally supported and has a rotational drive coupling attached at one end; a rotational driver being attached thereto is able to rotate both coil assemblies in the same direction at the same speed. A number of trays are arranged in a vertical stack, each tray capable of supporting a number of sheets and having a tray lift insert attached at each side. The tray lift inserts each have a helical passageway therethrough for accepting at least one revolution of one coil therein. The trays are oriented such that the inserts are engaged with the coils, the coils thereby holding the trays in position in the vertical stack. When the rotational driver rotates the coil assemblies, the tray lift inserts traverse the coils, causing the trays to change vertical position. All trays move in fixed space relationship except for each tray in turn when traversing the at least one turn of coarser pitch, whereby each tray in turn moves momentarily to a position of greater spacing with respect to the following tray and thus accommodating the entry of a sheet into each following tray in turn.
REFERENCES:
patent: 4420325 (1980-09-01), Tates
patent: 4671505 (1987-06-01), Hidaka
Optimotion, Inc.
Schacher Richard A,.
Shapiro Herbert M.
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