02-03-2019, 03:46 AM
Mike;
I am not so certain about that, if it was unknown then why did some companies use cloth covered pushback wire, or cloth and rubber wire, verses the straight rubber/gutta percha covered stuff back in the early 1930s? Also why did most manufacturers, with the exception of Brand Z, switch to using vinyl covered wire after the war? Regardless of the wire used many of those Philco chassis from the 1940s are still cramped like an inverted sardine can, why they were made that way I don't know, there wouldn't be much advantage in it other then saving some steel, certainly not in labour.
Regards
Arran
I am not so certain about that, if it was unknown then why did some companies use cloth covered pushback wire, or cloth and rubber wire, verses the straight rubber/gutta percha covered stuff back in the early 1930s? Also why did most manufacturers, with the exception of Brand Z, switch to using vinyl covered wire after the war? Regardless of the wire used many of those Philco chassis from the 1940s are still cramped like an inverted sardine can, why they were made that way I don't know, there wouldn't be much advantage in it other then saving some steel, certainly not in labour.
Regards
Arran
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