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Browse Prior Art Database

Card Programmed Card Reader

IP.com Disclosure Number: IPCOM000093479D
Original Publication Date: 1967-Oct-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 63K

Publishing Venue

IBM

Related People

Hartmann, K: AUTHOR

Abstract

This reader analyzes punch cards column-by-column and can be controlled by a program card so that some of the columns are skipped. The reader comprises thirteen circular contact disks 1 and two brush combs 2 and 3 moving on the circumference of disks 1 and connected, through a two-part arm 4, to an axle 5 which is driven by a motor not shown. The twelve upper disks 1 each consist of two conductive halves. The latter are insulated from each other. Each half is linked with an evaluator through a line not shown carrying the reading pulses.

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Card Programmed Card Reader

This reader analyzes punch cards column-by-column and can be controlled by a program card so that some of the columns are skipped. The reader comprises thirteen circular contact disks 1 and two brush combs 2 and 3 moving on the circumference of disks 1 and connected, through a two-part arm 4, to an axle 5 which is driven by a motor not shown. The twelve upper disks 1 each consist of two conductive halves. The latter are insulated from each other. Each half is linked with an evaluator through a line not shown carrying the reading pulses.

The bottom disk 1, located below the bottom edge of card 6 to be read, is made in one piece and is connected to ground potential which is applied to the combs 2 and 3 through the bottom brushes while axle 5 rotates.

Card 6 to be read is inserted in the dashed position 7. After the card is fully inserted, its bottom edge, through inhibiting a switch 9, operates electromagnet 10 which attracts latch 12 through lever 11 clamping card 6. Electromagnet 10, after switch 9 is opened, remains excited for the duration of the scanning cycle. In its open inactive position, latch 12 is held by tension spring 13. Electromagnet 10 and tension spring 13 are arranged in a recess of disks 1.

During reading, axle 5 and combs 2 and 3 rotate. On the front face of combs 2 and 3, rails 14 and 15 are arranged forcing card 6 against the circumference of disks 1. Roller 16, positioning card 6, if required, is attached to the up...