Casting pattern: Bracket for drum trunnion for electric chronograph
Date19th Century
Inventory Number2005-1-0166
ClassificationCasting Pattern
Subject
Maker
William Bond and Son
fl. 1793 - 1977
Cultural Region
Place of Origin
Material
DescriptionWood casting pattern for a bracket to hold a drum trunnion on an electric chronograph.
Signedunsigned
FunctionBefore sand casting an instrument part from brass or other metal, a foundry pattern is made from wood or metal. The pattern is a replica of the part to be cast. The pattern is pressed into sand, creating a cavity into which the molten metal will be poured.
ProvenanceWilliam B. Osgood, gift to CHSI, 1959.
Historical AttributesThese foundry patterns came from the workshop of William Bond & Son. Some of the patterns are associated with astronomical regulators and instruments used at the Harvard College Observatory. These instruments are currently in the Harvard Collection of Historical Scientific Instruments.
William Bond and Son
Date: 19th Century
Object number: 2005-1-0052
William Bond and Son
Date: 19th Century
Object number: 2005-1-0167
William Bond and Son
Date: 19th Century
Object number: 2005-1-0170
William Bond and Son
Date: 19th Century
Object number: 2005-1-0171
William Bond and Son
Date: 19th Century
Object number: 2005-1-0172
William Bond and Son
Date: 19th Century
Object number: 2005-1-0055
William Bond and Son
Date: 19th Century
Object number: 2005-1-0077
William Bond and Son
Date: 19th Century
Object number: 2005-1-0058
William Bond and Son
Date: 19th Century
Object number: 2005-1-0056
William Bond and Son
Date: 19th Century
Object number: 2005-1-0185
William Bond and Son
Date: 19th Century
Object number: 2005-1-0065
William Bond and Son
Date: 19th Century
Object number: 2005-1-0175