Browse Prior Art Database

Typewriter Card Feed

IP.com Disclosure Number: IPCOM000090351D
Original Publication Date: 1969-Apr-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 50K

Publishing Venue

IBM

Related People

Allen, WE: AUTHOR [+4]

Abstract

Tab cards 10 are fed from hopper 11, one at a time, to clamp platen 12 which is rotatably supported by arms 13 of hopper 11. Platen 12 is rotated counterclockwise, by mechanism independent of typewriter 14 to a fixed stop position thus bringing a card 10 into print position. After a line is typed on card 10, carriage return key 15 is depressed to operate the ordinary carriage return and index mechanism of typewriter 14. Index pawl 16 of typewriter 14 rotates dummy ratchet 17, mounted coaxially with the platen 12 to close a contact, not shown, carried by hopper 11, to initiate a new card feed cycle. Platen 12 is rotated clockwise to deliver the typed card 10 through track 18 into bin 19.

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Typewriter Card Feed

Tab cards 10 are fed from hopper 11, one at a time, to clamp platen 12 which is rotatably supported by arms 13 of hopper 11. Platen 12 is rotated counterclockwise, by mechanism independent of typewriter 14 to a fixed stop position thus bringing a card 10 into print position. After a line is typed on card 10, carriage return key 15 is depressed to operate the ordinary carriage return and index mechanism of typewriter 14. Index pawl 16 of typewriter 14 rotates dummy ratchet 17, mounted coaxially with the platen 12 to close a contact, not shown, carried by hopper 11, to initiate a new card feed cycle. Platen 12 is rotated clockwise to deliver the typed card 10 through track 18 into bin 19. A fresh card 10 is simultaneously picked from hopper 11 by picker knife 20 and delivered to continuously rotating feed rolls 21 and under a drive tooth 22. A cam shaft, not shown, drives arm 23 downwardly to deliver the fresh card 10 past leaf spring 24 into platen 12. The latter is again rotated clockwise to its fixed stop position in readiness for typing.

In the event an error is made in typing on a card, error button 25 is depressed to activate magnet 26 and position guide 27 in the outlet path from plate 12. A new card feed cycle is initiated and the spoiled card is delivered through track 18 and is guided by guide 27 into waste bin 28.

Hopper 11 can be installed on different typewriters 14 without specific adjustment. Hopper 11 is supported by the ordinar...