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Author: Nathan Moore

Nathan Moore is a historian of American horology, avid watch collector, and the creator of the Pocket Watch Database. He enjoys researching the stories behind the watches manufactured by the American watch factories and the people that built the industry.
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Pictured: Rust on a Steel Hairspring At age seventeen, Charles-Auguste Paillard began an apprenticeship under his uncle to study the repair, service, and adjustment of marine chronometers. Paillard quickly realized that maintaining marine chronometers introduced unique challenges. The moist and salty environment frequently caused the...
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Pictured: Measurement on a Standard Regulator Screw from 16-Size Illinois Model 4 (5.25mm) The patent application submitted by Arthur Bonnet in March 1910 for his automatic temperature compensating screw indicates the effectiveness relies on using softer steel with less carbon content. In 1910, Bonnet’s design...
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Pictured: “Temperature Compensating Mechanism” Patent #968235 In 1910, the Lincoln Watch & Jewelry Company secured a patent for an improvement to the regulator used on its watches, designed to provide additional temperature compensation. The patent was issued to Arthur Bonnet on August 23, 1910, and...
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