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Does anyone have the dimensions of a Diamond disc spring ?

I have been sent some photos see below and it looks like an 18 mm spring is this correct ? and must be pretty long 19ft ? and what about the spring thickness , anyone know ? any help gratefully received

Dear Soundgen,

According to the Edison Phonograph Monthly of August 1914, the follow apply;
A-60/B60: 21ft long, 1 1/16 wide and .031 thick (B80 0.38 thick)
A-150/A200//A250:18ft long, 1 5/16 wide and 0.35 thick
250/150 : 21ft long 1 9/16 wide .027 thick.

Somewhere I've seen the dimensions for other DD types and when I find them, I'll post 'em on here


Regards


Tim W-W

I am pretty sure that Frow's "Edison Disc Phonographs and Diamond Discs" has a table with all the different spring sizes somewhere in the last chapters. I don't have the book with me right now, so I cannot verify.

Hope that helps.
Andreas

I just looked through both Frow Books..

"The Edison Cylinder Phonograph Companion" book has a Spring table in the back of the book...

But.....

"The Edison Disc Phonographs" Book does not. If it does... I sure couldn't find it...

)

Tony K.

Edison Collector/Restorer

Dear Soundgen

Be careful that you get the right one. I had two wrong springs delivered from others before the most helpful Ron Sitko got the right one for my B60. By the way the spring is a monster and fitting it is not for the faint of heart!

Good luck

Keith