Home /

Illinois Watch Co.

img
Guest Post By: Richard Thomas Figure 1: s/n 2541201 Beginning in 1911 and continuing through 1914, the Illinois Watch Co. introduced their new 16s, Model 9, Nickel Bridge movement. Year IntroducedFirst Serial No.GradeJewelsAdjusted1911233703171023T, I, 6 Positions1913252600170517T1913252640170619T, I, 3Positions19132541331Sangamo Special21T, I, 6 PositionsT = Temperature; I...
img
Illinois Watch Company Price List (April 1926) Contains a list of movements and watches offered by the Illinois Watch Company effective April 1, 1926. Includes Bunn Special, Sangamo Special, A. Lincoln, Illini, Marquis-Autocrat, the Mary Todd, and other numbered grades. https://pocketwatchdatabase.com/guide/company/illinois/catalogs/illinois-watch-co-price-list-april-1926
img
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...
img
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...
1 2 11
This div height required for enabling the sticky sidebar