Help with identifying Rotary watch movement
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for future reference I'm attaching a PDF. in the PDF various measurements are converted to Ligne size which is a standard measurement for watches the problem with a watch photograph is we can't tell how big it is and when you're looking up what's called the fingerprint system the listing is by size. so this presents a challenge if you're looking because it means you have to look at a heck of a lot of watches if you don't actually know the size and you can't tell by the picture so it looks like it's about a 16 L size. now for the identification we run into several problems. First the watch has to been manufactured in sufficient quantities and spare parts had to be available so that the books like in this particular case I'm looking at the bestfit book it would have to actually list this watch which it does not appear to have listed at all. But your watch is also older than the current book I'm looking at so it might be in a prior edition or other reference books I'm just doing a quick look at this one. then we do run into the problem of people on the group wanting to look for identified their watch in the hopes a getting parts that probably don't exist anymore at all with literally hundreds of thousands of watches having been made and identifying exact watches can be a challenge or basically impossible so the fingerprint system existed to identify watches it's basically a thing of the past. So yeah various reference books of various years and they will typically show you with setting parts look like the physical printed books are in the exact size. This way a billable lay the parts right on the book in a PDF you just have to look through the images. What I did I started past 16 has there aren't that many and was heading down to the smaller sizes where there were way more watches here is an image showing what I was looking at and why it's really important to have the size because of yet the start with a much smaller size there be a heck of a lot to look at hoping to find what you're looking for. So basically it says I have to go find an older book and then were going to have to be really lucky. watch-ligne-size-chart.pdf -
Hi Old Hippy....I found a chain. After a bit of searching and research into how to measure and determine what size chain was required I bought one from HS Walsh. I also 'sharpened' the spikes and ran the new chain through. I then attached the weight and boom. Tick tock. After a bit of adjustment getting it into beat and regulating, the clock has been keeping good time for about two weeks. The weight hasn't 'dropped' either. The bad news is that I can't get the strike to work. It looks like the wooden 'cam' that locks the train has broken in two....and one half is lost. I was thinking of making a new one but I'm unsure if it's symmetrical, as I have half of what is left to make a pattern...thoughts?? Cheers Al -
Those photos were linked from OneDrive, they were not internally stored on WRT. They were deleted there at the source, or permissions changed to prohibit public view, or prevent hot linking. -
While I did order a 955.112, I also ordered a coil for the 715. The coil came in first and I replaced it today. Tada! Functioning again. I still plan on doing the swap, but will likely wait to see what watches come in my grandfather's collection, and what needs work. This was my first fix outside battery or strap changes. Pic of new coil to compare to the old coil above. Old battery just to test, silver oxide 371 is in it now. -
The different numbers are a clue to the lathe being a collection of parts although saying that some manufacturers said that any parts they made would all fit each other part within tolerance
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