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Can Anyone Identify These Tools?

Hamish

By Hamish
in Tools & Equipment

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Hamish Member

Hamish

Posted
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Hi, a while ago when searching on line I saw something I wanted in one of these 'watchmakers lots'. I bought the lot and after it arrived I noticed these othertools in there.

 

The first tool is brass and is 50mm in diameter. The grey areas you see are rubber. The holes are all the same and 9mm across. I hope the pictures say the rest.

 

The second set of tools appear to come in a set of sizes. At first I thought they were something to do with mainsprings, but now am not sure. There is a name 'Eterna' on the side of all of them with numbers from 1 (the smallest) on up. There is another number on some. These numbers are 1159 and 1319 which are Eterna calibers (I think), The interesting thing is that they appear to work consistent with mainspring winders, except there is no little tang for the spring to hook into. Where this would be is a cutting edge of some kind which leads me to think they could be a reamer of sorts.

I contacted Eterna and they have no idea. The lengths are approximately 100mm.

 

I am a bit of a fan of old vintage tools and I think its interesting how many 'spin off' hobbies can happen from general watch repair.

 

Hoping you can help.

 

Hamish.

 

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oldhippy Distinguished Member

oldhippy

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The name eterna is a watch movement make. Clockboy could be right saying its M/spring winders could be for eterna watches but I don't see why you couldn't use them for any movements providing you have the right size. The flat looking disks I haven't a clue.

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Geo Distinguished Member

Geo

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The disk thing could possibly be used to allow you to reverse the direction of springs for fitting in barrels. IE wind the spring in a winder, insert into suitable hole in the disk with the brass blank in place. Now twist the brass cover out of the way and press the spring into the barrel from the disk by pressing on the rubber.

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Marc Distinguished Member

Marc

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I think that the Eterna winders are possibly for installing the slipping bridle into the barrel in the good old days when the bridle was a separate piece and the actual main spring was just an ordinary manual type spring. The clue is in the size of the winders arbor, it's way too big for a main spring. Just a guess.

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Hamish Member

Hamish

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Thanks Guys,

Yes I thought something to do with mainspring winders as well, but cannot see how it would work (looking at last photo) as there is nothing to hook the mainspring onto to wind it and also the size of the 'barrel' nearly displaces all the space available in the receiver. (Not sure if this makes sense).

It looks like a cutting edge on the barrel and it is sharp....maybe something to do with cutting or smoothing the inside of a mainspring barrel side? Then I don't understand what the cut out area in the receiver would be for...

Oh well...I'll just consign them to the back of a drawer...thanks for all your suggestions.

 

Hamish

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chadders1966 WRT Addict

chadders1966

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I've seen the first item for sale before (think I might even have one somewhere :D ) listed as balance screw & timing washer holder. I imagine the idea is when working on the balance to keep the washers with the screws they were on, and in the right order. Then it can be twisted closed to keep them safe - that's what I'm going for anyway.

 

Stephen

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