Casting pattern: Blank for spring gravity arms for chronograph
Date19th Century
Inventory Number2005-1-0059
ClassificationCasting Pattern
Subject
Maker
William Bond and Son
fl. 1793 - 1977
Cultural Region
Place of Origin
DimensionsStorage box: 20 x 15 x 4 cm (stored in same box with 2005-1-0055, 2005-1-0058, 2005-1-0061, & 2005-1-0062)
Material
DescriptionWood casting pattern blank for two spring gravity arms. Original Bond Pattern inventory states: "Blank for spring gravity arms(?) makes 2, (1) eg. 315". Listed in the "Chronographs" section of the original Bond Pattern inventory (1988).
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: 2005-1-0057
William Bond and Son
Date: 19th Century
Object number: 2005-1-0056
William Bond and Son
Date: 19th Century
Object number: 2005-1-0058
William Bond and Son
Date: 19th Century
Object number: 2005-1-0062
William Bond and Son
Date: 19th Century
Object number: 2005-1-0076
William Bond and Son
Date: 19th Century
Object number: 2005-1-0068
William Bond and Son
Date: 19th Century
Object number: 2005-1-0071
William Bond and Son
Date: 19th Century
Object number: 2005-1-0072
William Bond and Son
Date: 19th Century
Object number: 2005-1-0075
William Bond and Son
Date: 19th Century
Object number: 2005-1-0052
William Bond and Son
Date: 19th Century
Object number: 2005-1-0060
William Bond and Son
Date: 19th Century
Object number: 2005-1-0077