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.
Pictured: Landis Watch Co. Automatic Regulator Advertisement, The Circle, March 1910. Several Months before the Lincoln Watch & Jewelry Company even secured the patent for the new temperature compensating regulator.
Pictured: Elgin Dial Showing Hunter’s Notched Dial Feet On July 31, 1894, George E. Hunter was granted a patent for his notched dial foot design, created to easily and securely.
Pictured: Illustration, U.S. Patent #498575. On July 31, 1894, George E. Hunter was granted a patent for his notched dial foot design, created to easily and securely fasten watch dials..
Pictured: Melamine Dials Throughout Production, Excerpt from “Research Provides New Materials For R.R. Type Dials,” Timely Topics, July 1953. Following extensive experimentation with nearly forty materials to find a suitable.
Pictured: Melamine Dial Buffing Machines at the Hamilton Watch Company Factory, Excerpt from “Research Provides New Materials For R.R. Type Dials,” Timely Topics, July 1953. Around 1945, the Hamilton Watch.
