Most visitors online was 4107 , on 14 Jan 2023
That pinion is pretty used up. Any chance that you can remove the pinion and turn it bottom side up and put it back in placed? It certainly is a contributing factor to the stopping problem, but I expect this is not the only point of wear in this old movement.This pinion is on the center wheel of an Ingraham desk clock from 1937. Is there any hope for this pinion other than replacing it? The clock runs but lacks power and stops frequently. I tried to see if I could move the pinion or great wheel to an undamaged area but don’t see a way to do that.
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Over the years, the brass becomes charged with the steel particles and it becomes an abrasive to the steel. It is hard to believe, but true. You can really see this on recoil escapement anchors.This is a perfect illustration of a soft brass wheel cutting a steel pinion to pieces; counterintuitive but that's what happens.
I think this company is in USAWhere do you source the pinion wire? I didn't have luck so far to find what I needed.
Thank you so much!I think this company is in USA
Utility MFG is a pioneer in manufacturing cold drawn Pinion Rods and wires in Massachusetts. Cold drawn process makes them much stronger. Call us for a quick quote.utilitymfg.com
You can adjust the end shake by bushing both plates, one past the inside of the plate and the other recessed on the inside of the other plate, if the plates are a bit thin you can put a bush in a bush, the outside bush being longer than the inside bush, therefore a recess can be achieved on the inside of one plate and the other can be proud.The spacer idea did not work. Due to end shake, the Great wheel can still fall into the center wheel pinion notches. Y’all have given me several other options that I am going to try.
It is like any skill, it can be learned, "IF" you have the right equipment, unfortunately I do not, however if I can't find a work around I would have to pass it on to someone who has.Cutting pinions is not all that difficult. Here is my overrun/scrap/extra assortment.
They can in fact be made with a hack saw and a lot of filing using several small files. I don't choose to do them that way but I did make one that way just to prove to myself I could do it. And it worked and looked pretty good in a late 17th century device. It was pretty rough and so was my work. But it fit right inIt is like any skill, it can be learned, "IF" you have the right equipment, unfortunately I do not, however if I can't find a work around I would have to pass it on to someone who has.
NOTE - when first posting this I didn't see the newly posted hand method above. Accordingly, If I was going to mechanize the process, what tooling up would be needed to cut a pinion? Lathe? Mill? I believe Sherline has a wheel cutting attachment for their lathe? Anything else I would need? Not looking to pop anyone's balloons here. I am actually looking to do this and would like opinions on a shopping list!
Looking at the Pinion Wire sources listed above (and the sub-sources the above sources sent me to) it appears the likely issue with pinion wire not working for us is something called "Pitch" (Pitch Inch?). Any idea what "pitch" the stuff in the U.K. is? With the "Pitch" options I have seen here I would think we could match what you have over there....You would need pinion wire the meshes with the wheel so you would need it specifically for clocks, lots of old stock available over here but not sure about USA.