Browse Prior Art Database

Binary Character Entry Switch

IP.com Disclosure Number: IPCOM000097890D
Original Publication Date: 1961-Sep-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 54K

Publishing Venue

IBM

Related People

Leary, TG: AUTHOR

Abstract

The single character entry device for data processing equipment has an assembly of switching members and coding plates. These have home positions and active positions to which the switching members are operated to close circuits.

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Binary Character Entry Switch

The single character entry device for data processing equipment has an assembly of switching members and coding plates. These have home positions and active positions to which the switching members are operated to close circuits.

The switch includes a hollow rectangular frame 12 on which are mounted a front plate 14 and a back plate 16, both having a plurality of holes 18. A number of coding plates 21 are arranged within 12 between 14 and 16. Plates 21 are urged to home position at one side of 12 by means of springs 31. Plates 21 each have a plurality of apertures 28. Some are inline with holes 18 in the home position, and some are offline by a predetermined amount in the direction away from 31.

The distribution of 28 follows the coding of binary element characters of a given code. Plates 21 are moved differentially to an active position upon inserting a plug 38. The differential movement of 21 to the active position closes contacts comprising bowsprings 41 and associated members 51 corresponding to the code character selected. Normally closed contacts may be employed and arranged to be opened by actuation of the coding plates.

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