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.
Arrangement:
1 series: 5 items (original videotapes only).
Related Archival Materials:
Two of the three regulators videotaped are located in the Division of the History of Technology collections (now Division of Medicine and Science).
Provenance:
Made for the national Museum of American History, December 17, 1997.
Restrictions:
Collection is open for research but the original videos are stored off-site and special arrangements must be made to work with it. Some oral histories are restricted Contact the Archives Center for information at archivescenter@si.edu or 202-633-3270.
Reprints. Hall clocks (tubular, gong and bell chime) ; Gravity and Graham escapement regulators ; marble clocks for churches, banks and offices ; Willard Banjo Clocks ; railway stations and school clocks.
Includes:
Trade catalog and price lists
Black and white images
Physical description:
3 pieces; 1 box
Language:
English
Type of material:
Trade catalogs
Trade literature
Place:
Waltham, Massachusetts, United States
Date:
1900s
Topic (Romaine term):
Clocks and watches (including clock-making and watch-making equipment) Search this
Mémoire sur le pendule et le balancier : considérés comme régulateurs des instruments à mesurer le temps, renfermant les résultats d'un grand nombre d'expériences sur les résistances que l'air oppose à la marche du pendule, sur le poids et la longueur qu'il mouvement de ces pendules / par J. Wagner
