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Browse Prior Art Database

Separable Record Card

IP.com Disclosure Number: IPCOM000078075D
Original Publication Date: 1972-Nov-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

McCartan, TC: AUTHOR

Abstract

A standard length 80-column tabulating card is prescored in such manner as to provide three machine processable 22-column cards without waste between cards, and concurrently maintain the standard 0.087" spacing between columns of prescored index point areas.

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Separable Record Card

A standard length 80-column tabulating card is prescored in such manner as to provide three machine processable 22-column cards without waste between cards, and concurrently maintain the standard 0.087" spacing between columns of prescored index point areas.

A conventional size 7-3/8" x 3-1/4" tabulating card 1 has prescored index point areas 2 arranged in rows and columns, with the center-to-center spacing between columns being 0.087" and between rows being 0.250". Special scores 3 and a score 4 divide card 1 so that separation along these scores will provide three 22-column cards A,B,C of equal size, each 2.329" long. Note that the prescored areas in A run from columns 7 to 28, in B from columns 33 to 54 and in C from columns 59 to 80; i.e., there is a space equivalent to five columns between the prescored areas of cards A and B and those of cards B and C, or a distance of 0.435" center-to-center. However, the distance from the machine processable edge of each card to the center of the nearest prescore is 0.251";
i.e., from the center of the prescore in column 28 of card A to its machine processable edge 5 is 0.251", and the distance from the center of the prescore in column 33 of card B to its machine processable edge 6 is 0.251", even though the distance between the centers is 0.435". This is achieved by having the prescores staggered as shown, with the intermediate lines 7 of each score 3 being to assist in a clean separation of the car...