a method used by the late Rev Edward Beal on his famous West Midland railway in the 1940-1950's combined with Cab Control
I have some of a series of booklets by Edward Beal, the Railway Modelling Series.
Book 7 is titled 'Two-Rail Control'. I've just taken a look & found it to be rather confusing. There are many drawings (to quite small scale), depicting lots of different track formations and their wiring options.
I have to say, the style of writing puts me off and I have a reasonable understanding of how to wire layouts.
A quote from page 9.
Besides these 2 methods - the insulated & the integral frog - there are and have been many others. It is proposed, however, not to deal with them in this handbook in order that complications and needless words may be avoided. The integral frog method decidedly lends itself in a remarkable manner to the simplification of the whole system, and when intricate formations are required it may be said to wipe out instantly half the possible difficulties and labour. It ought, however, to be said that none of the schemes so far evolved, and none in this handbook, have any claims to be restrictive. There is an unlimited scope, before the investigator who cares to devote time and study to the subject."
Sorry, but this isn't technical writing and is just rambling on about very little. Perhaps its the way people of his time wrote, but sadly does nothing for me. The space would have been better taken up with bigger drawings.
Edit to add missing word!
Edited by kevinlms, Today, 09:35 .