16 Jun
2005
16 Jun
'05
9 a.m.
Check out Ernie Jorgensen's Office Machine Americana website. He has
service and operating manuals (reproductions) for many old mechanical
calculators. http://users.lewiston.com/ejorgens/office/index.htm
I see that he does have some materials for the 8N-series calculators.
Yes, these machines are amazingly complex. I seriously wonder if the
mechanical engineering talent exists today to design such a machine from
scratch.
Best wishes,
Rick Bensene
The Old Calculator Web Museum
Beavercreek, Oregon
http://oldcalculatormuseum.com
[mailto:cctalk-bounces at classiccmp.org] On Behalf Of
Jules Richardson
Sent: Thursday, June 16, 2005 5:43 AM
Subject: Monroe electromechanical calculators
I brought one of these home from Bletchley last weekend -
turns out they're quite addictive little things :-) It's a
Monromatic 8N-3-213 which was marked as broken - I thought
I'd see if there was anything obviously wrong inside, plus of
course I was curious as to what the innards of such a machine
looked like.
Question - does anyone have service information for these
machines (yeah, right!) or useful tips on things to check over?
Can't say I've ever seen such a complicated thing. Electronic
circuits don't even come close in complexity :-) I don't
think I'd be up for a complete stripdown and rebuild; I'd
never get it all back together.