Here’s a Seth Thomas walnut cased parlor clock I repaired. It is not listed in the known Seth Thomas catalogs, but is called “Unlisted No. 1″ in Tran Duy Ly’s Seth Thomas Clocks book. It is 21 7/16″ tall and 14 3/8” wide. The date code 0981H (August 1890) is on the back of the case.
Repair job 8770. I polished the pivots and installed 11 bushings. The mainsprings are original:
Time mainspring: 11/16 x 0.0185 inches
Strike mainspring: 11/16 x 0.0185 inches
Even though they are on the thick side, they have caused only minor wear to the mainwheel teeth. This may be because old springs are not as strong as newer ones. Or, the old brass could be stronger. Or, the clock was not used for much of its life. I tightened the click rivets, secured the pinion wires with Locktite, and closed the pallets to reduce the drop into the exit pallet. The minute hand was a replacement that didn’t match the hour hand, so I found a new spade to install. The movement has four gears in the time train and five in the strike train. Earlier 8 day movements had four gears in each train, and later ones had five in both.
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