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Enter the serial number from the pocket watch movement below. Do not use the case number. Serial Number Tip

Pocket Watch Serial Number Lookup - Hamilton, South Bend, Illinois, Rockford, Waltham & Elgin Pocket Watches
  Serial Number:
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Columbus Watch Co. Pocket Watch Regulators

These are known regulators used on Columbus Watch Co. watch movements. The regulator is used to adjust the balance wheel's rate of oscillation in order to improve accuracy of the watch. Several varieties of watch regulators were used in movement designs, most of which were patented, often called "Patent Regulators." The best regulators offer extreme precision while adjusting the rate of oscillation. A patent regulator was often an indicator of quality.

Name:Bosley
Inventor:Joseph Bosley
Patent Date:c. 1755
Patent Number:
Name:Wheeler 1886
Inventor:Phillip H. Wheeler
Patent Date:Dec 14 1886
Patent Number:354283
Name:Bischel
Inventor:G. Bischel
Patent Date:May 28 1878
Patent Number:204287
Name:Owen
Inventor:W.W. Owen
Patent Date:Feb 9 1886
Patent Number:336060
Name:Columbus Spring
Inventor:(Reed Variant)
Patent Date:Feb 5 1867
Patent Number:61867