10 amp shunt
Date: circa 1912
Inventory Number: 0533c
Classification: Shunt
Subject:
Maker: Weston Electrical Instrument Corporation (founded 1888)
User: Department of Physics, Harvard University (founded 1884)
User: Harvard Engineering School (1918 - 1951)
Cultural Region:
Place of Origin:
Dimensions:
4.8 × 15.5 × 3.2 cm (1 7/8 × 6 1/8 × 1 1/4 in.)
Description:
10 AMP shunt #64146 6" long single strip of resistance material secured between 2 cast brass blocks, large nuts and small screws for line and meter. On wood block.
Signedunsigned
Inscribedon metal strip: PAT MAY 16 1893 No. 497482;
on left block: 64146
on right block: 20 AMP;
painted in white on wood: 33B;
on left block: 64146
on right block: 20 AMP;
painted in white on wood: 33B;
FunctionAccording to card, the shut is pivoted with bolts rather than wing bolts for current conductors, which would indicate it was used with a switchboard meter.
ProvenanceFrom the Jefferson Physical Laboratory, Harvard University. Was used for teaching Physics 3 class; and from Pierce Hall, Engineering School, Harvard University.
