Sheet file mounting/demounting mechanism in an item selection si

Details Sheet file mounting/demounting mechanism in an item selection si Sheet file mounting/demounting mechanism in an item selection si

1983-08-23

1985-06-04

Chamblee, Hugh R.

Card, picture, or sign exhibiting

Register, or file

Rotatable carrier for file

40379, B42F 900

Patent

active

045205833

ABSTRACT:
An item selection signal input system includes a sheet file carrying a plurality of item lists, each of the item lists being provided with item indicia for marking switches formed on a keyboard panel. The sheet file is removably wound around a bidirectionally rotatable drum through the use of a claw provided on the bidirectionally rotatable drum and an engaging member secured to one end of the sheet file. When different key markings are required, the sheet file is demounted from the bidirectionally rotatable drum, and a new sheet file is mounted on the bidirectionally rotatable drum through the use of the claw and the engaging member.

REFERENCES:
patent: 2130428 (1938-10-01), Katz
patent: 3943647 (1976-03-01), Holtsch
patent: 4257179 (1981-03-01), Oka et al.

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