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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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Rockford Pocket Watch Regulators

These are known regulators used on Rockford 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:Hurd 1874
Inventor:Joseph W. Hurd
Patent Date:Jun 2 1874
Patent Number:151537
Name:Reed
Inventor:George P. Reed
Patent Date:Feb 5 1867
Patent Number:61867
Name:Johnson
Inventor:John A. Johnson
Patent Date:Mar 29 1881
Patent Number:239387
Name:Rockford Spring
Inventor:(Reed Variant)
Patent Date:Feb 5 1867
Patent Number:61867
Name:Rockford Unknown
Inventor:
Patent Date:
Patent Number: