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Creators:
Todd, W. David (William David)
Stephens, Carlene E., 1949-
Jerome and Dorothy Lemelson Center for the Study of Invention and Innovation.
Dates:
1997-12-07
Size:
0.25 Cubic feet (2 boxes)
Collection ID:
NMAH.AC.0682
Repository:
Archives Center, National Museum of American History

2.5 hours of videotape documenting a succession of clock escapements invented by Richard F. Bond in the 19th century. Bond's invention was called isodynamic escapement.