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Composing Machine

IP.com Disclosure Number: IPCOM000097103D
Original Publication Date: 1962-May-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 4 page(s) / 56K

Publishing Venue

IBM

Related People

Lincoln, EJ: AUTHOR [+2]

Abstract

An IBM Executive Typewriter and a small memory storage, such as a single disk, provide automatic justification of printing and a method of cold-type composition. In operation, the material is keyed into the system once. Automatic controls limit the number of line characters to that which can be justified by adjustment of the spacing between words. The line is stored in memory and is then automatically read out of memory into a circuit which alters the space characters uniformly from left to right until the line is of justified length. Alteration of the space characters may be to a space greater or less than two units depending on whether the line is too short or too long. The resulting justified line is then stored in memory and later read out into the typewriter where printing occurs automatically.

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Composing Machine

An IBM Executive Typewriter and a small memory storage, such as a single disk, provide automatic justification of printing and a method of cold-type composition. In operation, the material is keyed into the system once. Automatic controls limit the number of line characters to that which can be justified by adjustment of the spacing between words. The line is stored in memory and is then automatically read out of memory into a circuit which alters the space characters uniformly from left to right until the line is of justified length. Alteration of the space characters may be to a space greater or less than two units depending on whether the line is too short or too long. The resulting justified line is then stored in memory and later read out into the typewriter where printing occurs automatically. Typewriter 1 (upper drawing) enters the information into the machine with proportional spacing. The material is then placed in a file 3 such as the disk or the drum type by electronic circuitry 2. The output electronic circuitry 4 combines with the justifier 5 of 2 to develop the justified lines in the file. When justification is complete, the typed line is printed by typewriter 6 under control of output 4.

In the lower drawing, information is accepted from input typewriter 1 and stored in file 3. Data for a single line is keyed by the operator on typewriter 1. A character counter 7 counts key strokes entered into 3. This counter, cooperating with the disk index 8, clock pulse generator 9, bit ring 10, file character ring 11 and character compare unit 12, commutates a keyed entry into or out of the proper column or character area of File 3.

Character code contacts in the typewriter or, as shown, a separate encoder 13 load the input single character register 14 with binary coded decimal bits for serial writing into the file storage unit. This is by selector bails built into typewriter
1. Added typewriter unit contacts control a pulse generator 15 so that a number of pulses representative of the space units that a character occupies on the printed page are emitted to binary line units counter 16. At the beginning of each input line this counter is set to a binary value representative of the complement of the number of units selected for the line length by means of line length switches
17. Each train of pulses representative of the unit spaces that a character will occupy on the printed page adds positively to the negative value in counter 16. When the counter 16 is advanced to the zero point, the keyed characters occupy exactly the line length that was preset into the counter.

Signal 18 indicates that there are eighteen units, that is, six three unit characters, left before the justified margin position is reached. A constant other than -18 may be used if desired. A compensating over-key lock 19 permits the operator to key one unit in excess of the eighteen units after the signal sounds for each space that was keyed int...