Casting pattern: Pendulum top block or dial foot
Date19th Century
Inventory Number2005-1-0106
ClassificationCasting Pattern
Subject
Maker
William Bond and Son
fl. 1793 - 1977
Associate Name
Alvan Clark and Sons
1846 - 1958
Cultural Region
Place of Origin
DimensionsStorage box: 7 x 7 x 4 cm (stored in same box as 2005-1-0108)
Material
DescriptionWood casting pattern for what is either a pendulum top block or a dial foot for a regulator. The original Bond Pattern Inventory (1988) states: "Pendulum top block(?) or reg. dial foot (1) (Alvan Clark type).
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 instrument are currently in the Harvard Collection of Historical Scientific Instruments.
William Bond and Son
Date: 19th Century
Object number: 2005-1-0108
William Bond and Son
Date: circa 1867
Object number: 2005-1-0124
William Bond and Son
Date: 19th Century
Object number: 2005-1-0095
William Bond and Son
Date: circa 1867
Object number: 2005-1-0093
William Bond and Son
Date: circa 1867
Object number: 2005-1-0114
William Bond and Son
Date: circa 1867
Object number: 2005-1-0116
William Bond and Son
Date: 19th Century
Object number: 2005-1-0117
William Bond and Son
Date: 19th Century
Object number: 2005-1-0119
William Bond and Son
Date: 19th Century
Object number: 2005-1-0053
William Bond and Son
Date: circa 1880
Object number: 2005-1-0102
William Bond and Son
Date: circa 1880
Object number: 2005-1-0101
William Bond and Son
Date: circa 1867
Object number: 2005-1-0130