Re: IBM Maintenance Withdrawal

["Joe Frank" <jfrank@xxxxxxxxxxx>]

Neil Palmer wrote:
> 
> Yes, a little while after the 056 !
> Hey, they had an 056 keypuncher at my first part time operators job in
> 1972 - along with 029's, those paper-tape controller remote card punch
> comm thingies that were around 110bps, hardwired collators (085 ?),
> reproducing punches, card interpreters, and an 80 column card sorter
> that had vacuum tubes !!!!
> 
> Neil Palmer                                AS/400~~~~~
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For the trivia nuts:

The 056 was a verifier - like a keypunch, but only read 
the holes in the cards while the operator keyed in the 
data allegedy punched in the cards.  If the typed data 
didn't match, the operator would "reject" the card (it 
would be offset in the stacker).

The 082 sorter used a "thyratron" (sp?) vacuumn tube to 
energize the sort magnet -- 500 times a minute, if I recall.
A vacuumn tube was used because the amount of current would 
have quickly eroded relay points.

The 029 keypunch was a replacement for both the 024 and 026, 
which were identical, except the 026 was capable of printing 
along the top of the card.  Originally designed to use "reed" 
relays instead of the more costly "wire contact" relays, the 
029 became famous for intermittent problems due to sticking 
points in the reed relays.  The reed relay design was later
discarded in favor of the more expensive but reliable wire 
contacts -- much to the relief of IBM Customer Engineers.

Anyone remenber the 010?

Joe Frank




> 
> > -----Original Message-----
> > From: PaulMmn [SMTP:PaulMmn@ix.netcom.com]
> > Sent: Wednesday, March 18, 1998 11:35 PM
> > To:   MIDRANGE-L@midrange.com
> > Subject:      Re: IBM Maintenance Withdrawal
> >
> > OH MY GOD!  THEY KILLED KEY PUNCHES!  I suppose the 026 Card Punch was
> > discontinued previously...
> >
> > --Paul E Musselman
> > PaulMmn@ix.netcom.com
> >
> >
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