. Machinery and processes of the industrial arts, and apparatus of the exact sciences. ich a representation isherewith given, Fig. 87 consists essentially of a pair of soft iron plates ofabout twelve inches by twenty-four, and half an inch thick, wrapped withinsulated wire about one-tenth of an inch in diameter to the depth offour layers. These plates are placed horizontally, one over the other,and have at each of their extremities a revolving armature. These arm-atures are of the form originally proposed by Mr. Werner Siemens, ofBerlin, in 1857, being cylinders of soft iron deeply grooved in
. Machinery and processes of the industrial arts, and apparatus of the exact sciences. ich a representation isherewith given, Fig. 87 consists essentially of a pair of soft iron plates ofabout twelve inches by twenty-four, and half an inch thick, wrapped withinsulated wire about one-tenth of an inch in diameter to the depth offour layers. These plates are placed horizontally, one over the other,and have at each of their extremities a revolving armature. These arm-atures are of the form originally proposed by Mr. Werner Siemens, ofBerlin, in 1857, being cylinders of soft iron deeply 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 bars of soft iron separated by an equally thickplate of brass all firmly united and then bored longitudinally. These hol-low cylinders are interposed between the extremities of the broad plates Fig.
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Keywords: ., bookcentury1800, booksubjectmachinery, booksubjectscientificappa
