4 Sep
2025
4 Sep
'25
6:39 p.m.
On Thu, 2025-09-04 at 11:35 +0100, David Wade via cctalk wrote:
The Computer History Museum in Mountain View, CA has a 519. They might
have other models as well, or information about them. Contact Dag
Spicer <spicer(a)computerhistory.org>rg>.
Haus zur Geschichte der IBM Datenvararbeitung (House of the History of
IBM Data Processing) had a large collection in what had been a punch-
card factory in Sindelfingen, a suburb of Stuttgart. They had a 650,
1401, and 360\25 in working order. IBM sold the building and moved the
collection to the IBM technology center across the autobahn in
Böblingen. I don't know how much of the collection they retained.
Contact Hans Spengler <hhwsppb(a)t-onlind.de>de>, Werner Seebode
<werner(a)familie-seebode.de>de>, or Heinz Oberle <HOberle(a)t-online.de>de>.
I'm
looking for some information on a couple of the early
IBM unit record devices, in particular the Type 512A and
the Type 518. Ideally, I'd like to get the mechanical
dimensions in enough detail to create a CAD model.
As I assume you are aware, but perhaps others on here are not, that
these pre-date computing and must come from the era when data
processing
involved only punched cards and I feel well before the term "Unit
Record" was coined. Sadly, this seems to be a forgotten era and there
is
very little information about it on the web.