Method and apparatus for the positionally correct supply of diff

Details Method and apparatus for the positionally correct supply of diff Method and apparatus for the positionally correct supply of diff

1993-09-03

1994-06-14

Schacher, Richard A.

Sheet feeding or delivering

Feeding

By means to change direction of sheet travel

271176, 271184, 271270, B65H 506, B65H 900

Patent

active

053203402

ABSTRACT:
In order to select certain sheet sizes or formats for a rotation by 90.degree. in the plane of the sheet, sensors are provided which sense the presence of a sheet on a supply and turning table. The sensors provide a respective signal for the control of a sheet turning mechanism. After turning the sheets are fed in the proper positional orientation to further processing, for example, in a folding apparatus. The turning mechanism also performs a sheet lifting and lowering operation. The sheet transport out of the turning mechanism is performed at a speed higher than the speed of the sheets travelling into or onto the turning mechanism to provide the time necessary for the sheet turning operation which takes place in three steps: sheet lifting, sheet turning, and sheet lowering in response to a control signal from the sensors which determine what sheet format needs to be reoriented.

REFERENCES:
patent: 5045039 (1991-09-01), Bay
patent: 5154405 (1992-10-01), Graveson
patent: 5188355 (1993-02-01), Lowell

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