Casting pattern: Weight for regulator
Date: 19th Century
Inventory Number: 2005-1-0180
Classification: Casting Pattern
Subject:
Maker: William Bond and Son (fl. 1793 - 1977)
Cultural Region:
Place of Origin:
Material:
Description:
Wood casting pattern for a cylindrical weight for a regulator clock.
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.
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.
ProvenanceWilliam B. Osgood, gift to CHSI, 1959.