DC motor, series field
Date1870-1920
Inventory Number0400
ClassificationMotor
Subject
Maker
American
?
Cultural Region
Dimensions8 × 9.3 × 7 cm (3 1/8 × 3 11/16 × 2 3/4 in.)
Material
DescriptionA tiny rectangular base. From a binding post in one corner, a wire coils loosely a few times and runs to a larger taught coil. This coil is wrapped around a metal core to form an armature. Next to it is another coil of wire around another metal core. The second coil, however, is able to rotate about an axis. Both coils are sandwiched between two curved pieces of metal (on top and bottom), presumably permanent magnets. The two metal pieces are connected by a metal strip, through which second coil's axle runs. There is an additional metal component, suspended from the base, that looks like a dumbell around which wires are coiled. The latter may or may not be the "attachment for running a stirring wheel in a constant temperature bath."
Signedunsigned
FunctionAccording to its inventory card, this motor (which like all other motors converts electrical energy into kinematic energy) was meant to run a stirring wheel in a constant temperature bath.
French
Date: circa 1880
Accessories: protecting case with glass window
Object number: DW0095
Charles Chardin
Date: 1870-1900
Accessories: key; mahogany case
Object number: DW0829
Robert G. Brown
Date: circa 1884
Accessories: exchange jacknife switch (8035a)
Object number: 8035b
Robinson Foster Electric Railway Motor Company
Date: circa 1899
Object number: 1997-1-0542
Bodine Electric Company
Date: circa 1950
Accessories: four coils of thin wire of varying lengths (1996-1-0326b)
Object number: 1996-1-0326a