rotating reversing switch, D.P.D.T.
Datelate 19th-early 20th Century
Inventory Number0381
ClassificationSwitch
Subject
Maker
American
?
Cultural Region
Dimensions7.2 x 10 x 10 cm (2 13/16 x 3 15/16 x 3 15/16 in.)
Material
DescriptionReversing Switch D.P.D.T.
A rotating reversing switch with contacts on a drum and two brushes. Used for small electric machines and spark coils etc. Operated by a round knob made of an insulating material. Rests on a square wooden base. It has four brass binding posts.
A rotating reversing switch with contacts on a drum and two brushes. Used for small electric machines and spark coils etc. Operated by a round knob made of an insulating material. Rests on a square wooden base. It has four brass binding posts.
Signedunsigned
Inscribedpainted on cylinder in red: A
FunctionFor reversing the poles on a circuit. (D.P.D.T. stands for double-pole, double throw).
American
Date: late 19th-early 20th Century
Accessories: tilting arm (0380b)
Object number: 0380a
American
Date: late 19th-early 20th Century
Accessories: goes with reversing switch (0380a)
Object number: 0380b
Date: late 19th-early 20th Century
Object number: 0379
American
Date: late 19th-early 20th Century
Object number: 0390
Department of Chemistry, Harvard University
Date: late 19th-early 20th Century
Object number: 0389
Thomas Hall
Date: circa 1890
Accessories: pulley rope
Object number: 1997-1-1423
