Rhumkorff Coil Restoration

[Terry Bites]

This is a you genuinely know it or you don't kind of question.
I've plenty of my own opinions.

I've been given an antique Rumkorff coil to restore.
It's in bits an looks like some on had a go an gave up. Electrically it's fine, shockingly good in fact. Whacked by my LCR meter!
I've seen a lot of photos of interuptor mechanisms which are mostly simple break types. Some bizarre contraptions. I'm still trawling ancient patents.
My coil has three posts and two springy arms which I'll remake. I've tried to make sense of the various configurations that might work but I'm still not happy.
BTW, can you hard silver solder Tungsten to brass?
Any ideas?

Ta