UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > General Vintage Technology > General Vintage Technology Discussions

Notices

General Vintage Technology Discussions For general discussions about vintage radio and other vintage electronics etc.

Closed Thread
 
Thread Tools
Old 5th Dec 2017, 1:12 pm   #1
dave walsh
Dekatron
 
Join Date: Jan 2006
Location: Ramsbottom (Nr Bury) Lancs or Bexhill (Nr Hastings) Sussex.
Posts: 3,921
Default Geoff Tootill Computer Pioneer

My final "catch up" post here is to flag up an obit for Mr T in today's Guardian.
He's died aged 95 and it is accompanied by a rather good colour photo of the computation device that became known as 'Baby' [complete with valves rack mounted upside down!] He was apparently brought up and educated in Birmingham but born in Chadderton [Oldham] to which he must have returned while working in the Ferranti organisation at one point. It mentions that he built radios as a youngster like many of his contemporaries and progressed through war time Radar Work to developing a computer.

Dave W

Last edited by dave walsh; 5th Dec 2017 at 1:17 pm.
dave walsh is offline  
Old 5th Dec 2017, 3:30 pm   #2
ukcol
Dekatron
 
ukcol's Avatar
 
Join Date: May 2003
Location: Harlaxton, Lincolnshire, UK.
Posts: 3,912
Default Re: Geoff Tootill Computer Pioneer

Quote:
Originally Posted by dave walsh View Post
.........complete with valves rack mounted upside down.....
Great lengths were taken with early thermionic valve based computers to get the maximum reliability out of the valves used. The valves used in Colossus at Bletchley Park were run 24/7 to avoid the failures associated with heating up and cooling down for example. I wonder if the designers thought the valves may be slightly more reliable operated upside down for some reason? It may, of course, simply have been that access to components for servicing and testing was more convenient with the chassis upside down.
__________________
Best Regards,
Colin McLaughlin
BVWS Member
ukcol is offline  
Old 5th Dec 2017, 5:08 pm   #3
peter_scott
Octode
 
peter_scott's Avatar
 
Join Date: May 2003
Location: Edinburgh, UK.
Posts: 1,909
Default Re: Geoff Tootill Computer Pioneer

https://www.theguardian.com/global/2...otill-obituary

https://www.youtube.com/watch?v=6TRfy70DqD8

Peter
peter_scott is offline  
Old 5th Dec 2017, 5:22 pm   #4
merlinmaxwell
Dekatron
 
merlinmaxwell's Avatar
 
Join Date: Jul 2008
Location: Maidenhead, Berkshire, UK.
Posts: 7,819
Default Re: Geoff Tootill Computer Pioneer

Light bulbs (the proper filament type) where designed to run "cap up" to reduce darkening by volatilised tungsten. I would have thought that valves run that way up would be more prone to electrode leaks.
__________________
Cats have staff, it's dogs that have owners.
merlinmaxwell is offline  
Closed Thread

Thread Tools



All times are GMT +1. The time now is 8:05 am.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Copyright ©2002 - 2018, Paul Stenning.