Mosler Safe Co, Hamilton, Ohio - 3&4 movements

  A

  B

A. & B. c. 1920's. Around 1902 with the sale of E. Howard & Co. to the Keystone Watch Case Company, E. Howard exited the time lock business. Therefor, unlike most time lock companies that used either E. Howard or Seth Thomas movements, this company used 18-size Model #4 pocket watch movements supplied by the Illinois Watch Company. The movements had a separate crystal covering the watch movements much like on a conventional pocket watch providing exceptional protection from contamination compared to other time lock movements. Bankers Dustproof Time Lock Co. was another company that used movements supplied by Illinois Watch Company. This was probably not coincidental since Banker's disappeared as a brand in 1915 and Mosler Safe Co. appeared in 1916 based on designs very similar to that of Bankers. After 1932 Mosler switched to American Waltham Co. 16-size pocket watch movements.  file 115, 3 mvt; file 6, 4 mvt

Mosler Safe Co. was the result of a series of consolidations of earlier companies including Mosler Safe and Lock Co., Mosler Bahmann and Bankers Dustproof Time Lock Co. That company emerged in 1917.

In addition to the protection given the watch movements by a glass crystal fitted over them, the movements can be wound without having to open the door by sliding the lever to open the winding holes.