Browse Prior Art Database

Card Reading Control Mechanism

IP.com Disclosure Number: IPCOM000097835D
Original Publication Date: 1961-Aug-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Porterfield, FB: AUTHOR [+2]

Abstract

This is a control mechanism for a card reading apparatus which reads a record card 10 serially character by character. Card 10 is placed on a card carrier 11. Carrier 11 is then inserted in the machine by a movement from right to left with respect to the sensing levers 12. As 11 is moved to the left, the bail feet 13a of bail 13 follow,s on top of blades 14 which are attached to 11. Bail 13 supports levers 12 in a raised position so that the sensing projections 12a are not in contact with card 10 during the right to left movement of carrier 11.

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Card Reading Control Mechanism

This is a control mechanism for a card reading apparatus which reads a record card 10 serially character by character. Card 10 is placed on a card carrier 11. Carrier 11 is then inserted in the machine by a movement from right to left with respect to the sensing levers 12. As 11 is moved to the left, the bail feet 13a of bail 13 follow,s on top of blades 14 which are attached to 11. Bail 13 supports levers 12 in a raised position so that the sensing projections 12a are not in contact with card 10 during the right to left movement of carrier 11.

As 11 arrives at the terminal position to the left, the feet 13a drop off blades 14 permitting projections 12a to come in contact with card 10. Carrier 11 is spring-biased for movement from left to right to enable a card sensing operation. The feet 13a travel in the channel 15 beneath blades 14. During the card sensing operation the projections 12a sense the data representing perforations in card 10. Upon encountering a perforation, a projection 12a drops into the hole and permits contacts 16 to come into contact with the common conductor bar 17. The cam block 18 attached to carrier 11, upon approaching the right hand position, cams feet 13a upwardly. This overcomes the biasing of blades 14 and raises sensing levers 12 so that projections 12a are out of touch with card 10. The control mechanism is now in readiness for reading the next card.

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