Browse Prior Art Database

Justification Indicating Device

IP.com Disclosure Number: IPCOM000094800D
Original Publication Date: 1965-Jun-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Toben, BE: AUTHOR [+2]

Abstract

This electrical apparatus provides the typist with an indication of the amount of space which must be left between words in a line of typing to justify the line when it is retyped.

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Justification Indicating Device

This electrical apparatus provides the typist with an indication of the amount of space which must be left between words in a line of typing to justify the line when it is retyped.

Sliding contact 10 is mounted on the movable carrier of a typewriter. Contact 10 engages precision linear potentiometer 11 when the carrier moves into a justification zone adjacent the right-hand margin of the typed material. The voltage from sliding contact 10 is fed through closed contacts 14 of relay 15, stepping switch 16 and a selected one of resistors 17 to current sensitive meter
18. Switch 16 is advanced each time space bar 19 of the typewriter is actuated to insert a resistor 17 in the circuit. The resistance value corresponds to the number of interword spaces in the line of typing. A first scale on meter 18 is calibrated to provide a direct reading of the number of spaces remaining at the end of line divided by the number of interword spaces.

The number of spaces remaining at the end of the line of typing may not be evenly divisible by the number of interword spaces. An indication of the remainder must also be provided to the typist. To obtain the remainder, the typist depresses push button 20 which corresponds to the last whole number indicated on the first scale of meter 18. This results in energization of relay 15. Its contacts 14 and 22 shift to place the meter 18 in a different electrical circuit.

The circuit comprises sliding contact 10,...