Machinery and processes of the industrial arts, and apparatus of the exact sciences (1869)
Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889 · Washington, Govt. print. off. · leaf 444
ly grooved in the direc-tion of their length, and wound in the groove with insulated copper wire. The armatures revolve in hollow cylinders of equal length, and onlysufficiently larger to permit them to turn freely. These hollow cylinders LADDS DYNAMO-ELECTRIC MACHINE. 427 are formed of two thick…
Machinery · Scientific apparatus and instruments
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