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


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
Join Date: Jan 2006
Location: Ramsbottom (Nr Bury) Lancs or Bexhill (Nr Hastings) Sussex.
Posts: 3,928
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's Avatar
Join Date: May 2003
Location: Harlaxton, Lincolnshire, UK.
Posts: 3,932
Default Re: Geoff Tootill Computer Pioneer

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's Avatar
Join Date: May 2003
Location: Edinburgh, UK.
Posts: 1,913
Default Re: Geoff Tootill Computer Pioneer

peter_scott is online now  
Old 5th Dec 2017, 5:22 pm   #4
merlinmaxwell's Avatar
Join Date: Jul 2008
Location: Maidenhead, Berkshire, UK.
Posts: 7,842
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 online now  
Closed Thread

Thread Tools

All times are GMT +1. The time now is 6:52 pm.

All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at
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.