recording drum chronograph
Datecirca 1900
Inventory Number1996-1-0333
ClassificationChronograph
Subject
Maker
Harvard College Observatory
?
founded 1839
Cultural Region
Place of Origin
Dimensions26 × 62 × 30 cm, 154.32 lb. (10 1/4 × 24 7/16 × 11 13/16 in., 70 kg)
Material
DescriptionThis drum chronograph and its clock drive sit on a cast iron base.
The clock drive has a removable hand crank with wooden knob. It is an electromagnetic clock drive with brass governers. Fast and slow lever. The pillar between the plates of the clock is marked "2."
The hollow drum is supported on three turned cast iron columns and the axis of the driving mechanism. The drum which carries the pen moves along a precision screw.
The clock drive has a removable hand crank with wooden knob. It is an electromagnetic clock drive with brass governers. Fast and slow lever. The pillar between the plates of the clock is marked "2."
The hollow drum is supported on three turned cast iron columns and the axis of the driving mechanism. The drum which carries the pen moves along a precision screw.
Signedunsigned
ProvenanceHarvard College Observatory, Cambridge, MA.
Historical Attributesmoved from 2F-3e on 7-25-96
International Instrument Company
Date: circa 1892
Accessories: duplicate of nameplate (1997-1-1847b); pulley
Object number: 1997-1-1847
International Instrument Company
Date: circa 1892
Object number: 1997-1-1847b
Davis & Son
Date: 1843-1873
Accessories: small metal key
Object number: 1998-1-0606
E. Zimmermann
Date: 1890-1910
Accessories: weights, crank, extra tuning fork
Object number: WJ0105
Weathertronics
Date: circa 1960
Accessories: two inkbottles; 6 pens;1 package of charts (obtained from Robert E. White Instruments, Inc. Boston, Tel. 617- 742-3045)
Object number: 1999-1-0042
American
Date: mid 19th-early 20th Century
Accessories: A metal crank handle; a metal crank handle with a wooden knob
Object number: 1996-1-0332
Harvard College Observatory
Date: circa 1869
Object number: 1996-1-0082
Richard Frères
Date: 1882-1891
Accessories: paper chart on drum; test tube for barograph; large key; other miscellaneous parts
Object number: 1998-1-0132b