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Restoration of braided flexible cable, circa 1925 (Low Voltage!)

AncientMariner
Managed to locate a pair of circa 1925 Ericsson BBC Headphones suitable for my similar age Ericsson Crystal Radio. The braided flexible cable looks a bit mucky.

I suspect that the inners are tinsel wrapped cotton similar to that used by Post Office Telephones in the days of plaited handset flexibles of the 1940s 50s. I guess there would be rubber overall insulation beneath the braid.


Question is, how to clean the cable up?  Ideas that have so far come to mind are 1) Hand hot water with some washing up liquid, or 2) electrical solvent such as Isopropyl Alcohol. I am a little wary as to be would be kinder to the rubber over insulation (If any) and the tinsel covered cotton?


Either way, or any other way, would be to afterwards jang the wet flex close to a CH radiator to dry out.


Thanks.

Clive

Parents
  • 0
    Thanks Mike, better than I expected in fact.

    I had 90 zaps in each eye. Just a green flash and a click for each zap, no discomfort or pain at all during the procedure.  As expected, the drops to close my pupils caused a headache, within ten minutes of them going in.


    During my 25 years in the MN, I didn't see many green flashes https://en.wikipedia.org/wiki/Green_flash I certainly made up for it this morning!


    Now to soak some WD-40 into those earphone threads!

    Clive



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  • 0
    Thanks Mike, better than I expected in fact.

    I had 90 zaps in each eye. Just a green flash and a click for each zap, no discomfort or pain at all during the procedure.  As expected, the drops to close my pupils caused a headache, within ten minutes of them going in.


    During my 25 years in the MN, I didn't see many green flashes https://en.wikipedia.org/wiki/Green_flash I certainly made up for it this morning!


    Now to soak some WD-40 into those earphone threads!

    Clive



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