IBM 029 Card Punch

 
IBM 029
IBM 029
IBM 029
IBM 029
IBM 029
IBM 029
IBM 029
IBM 029
IBM 029
IBM 029
 
IBM 029 Card Punch, circa 1968

Model: 29A
Hopper Capacity: 500 cards
Stacker Capacity: 500 cards
Technology: Diodes, wire contact relays, SMS cards
Notes: I acquired this unit along with a model 59 verifier. It had been in storage in a non-temperature/humidity controlled environment for quite a while and the owner was not familiar with these machines. On power up, the motor ran, but even attempting a clear cycle resulted in nothing more than a relay latching. After cleaning all the (wire contact) relays with DeOxit along with the keyboard contacts, it would feed and register cards, although the clear still didn't work. There was a lot of corrosion around the aluminum parts, especially around the control card drum assembly. After a marathon weekend work session which included cleaning the cam-operated circuit breakers and more contacts, it now feeds and registers cards, clears correctly and punches 80 columns with perfect alignment. I checked out the drum control functions during another session, and it senses all card columns, and skips and dups correctly (although it does stop occasionally during auto-dup fields). The print mechanism doesn't quite work: it prints incorrectly and the ribbon doesn't advance. I'll continue to work on it. For more information, see my VCF East 2007 poster.


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Last updated on Monday, October 26, 2009