Electric Clock
Summary:
DC operated winding mechanism with auxiliary mainspring.
Patent Dates
Application Date:
1928-06-07 Issue Date:
1933-01-31
Patent Numbers
Patent Number:
1895923 Serial Number:
283693
Description:
The power unit has a contactor that bows in and out for a snapping motion. A mainspring in barrel operates the clock for about 7 hours if the power is lost.
Inventor Information:
William H. Greenleaf of Chicago, Illinois, Assignor to Western Clock Company, of Peru, Illinois, a corporation of Illinois.
Patent Type:
Utility
Patent Country:
United States
Patent Categories:
DC Electric Clock; Automobile Clock
Assignee:
Western Clock Company (the second one, 1912 - 1936)
Inventor:
Greenleaf, William
Patent URLs:
U.S. Patent Database; Google Patents
