Classic watches, watchmaking, antique tools, history, vintage ephemera and more!
Learn about mechanical timepieces and how they work, the history of the American watch industry and especially all about the Elgin National Watch Company! Check back for new content daily.
Although this is technically a blog, the content is not generally in a time-based sequence. You can find interesting items throughout. Down the page some is an alphabetical word cloud of keywords used here. A great way to dig in is to look through those topics and click anything you find interesting. You'll see all the relevant content.
Here are a few of my favorites!
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Making a Pallet Arbor
Here's a tip... If you take a razor blade and place its edge against a fine file, and strike it with a hammer. It turns into a very fine saw.
Getting closer to the final dimensions we switch to an arkansas stone, and then to a jasper stone.
The final pivots are .2 mm in diameter (two tenths). This has to be exactly right. Too big and the part will bind in the jewels, too small and the extra side shake will disrupt the escapement.
The pivot are finally burnished with a steel burnisher, and polished to a mirror finish.
Here is the completed assembly. The pallet is friction fit (in the staking tool) so thus the slightly tapered shape of the arbor is critical. It can not be adjusted.
The pallet must fit with the right amount of snugness at exactly the right height so that the fork addresses the roller correctly on the balance end, and at the other end the escape wheel teeth come midway on the faces of the pallet jewels.
Finally, the new part in place, a well running watch.
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