I repaired this 1906 Ingraham mantel clock. Clocks of this type were popular around 1900 to 1920. Collectors refer to them as “black mantel” clocks.
Repair job 6256. Movement date code 3 06. I moved the escape wheel on its arbor to engage the unworn surface of the pallets. I trued the escape wheel’s teeth. I closed the verge (moved the pallet tips closer together) to make the drops correct. The original mainsprings were:
Time: 3/4 by 0.0182 inch
Strike: 3/4 by 0.018 inch
The springs were stronger than necessary, so I replaced them with new, thinner mainsprings, #15959 from Timesavers (the newer type with copper rivet in the loop). The dimensions are:
Time: 3/4 by 0.0158 by 120 inches
Strike: 3/4 by 0.0162 by 120 inches
I polished the pivots and installed 14 bushings.
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