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Title: |
1892 Article-Belknap Motor Co., B. C. Electric Motor & Dynamo |
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Source: |
The Electrical Engineer, 31 Aug 1892, page 210 |
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Insert Date: |
11/28/2011 1:46:49 PM |
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We illustrate in the accompanying engraving the most recent form of the B. C. Standard electric motor and dynamo, manufactured by the Belknap Motor Co., of Portland, Me., who are also large manufacturers of water motors for various purposes. The B. C. dynamo or motor is compound wound, and therefore self-regulating, the field magnets being of the horseshoe type, the bed plate forming the yoke of the magnet. The wire of the field is wound on separate spools made of brass with leatheroid heads, which can easily be replaced. The armature is laminated, the sheets being all keyed to the shaft by one spline, and pressed firmly together by a nut at one end. The depth of the winding on the armature is very small, and this, together with the large quantity of iron in the field magnets produces a magnet circuit of low resistance and consequently a high inductive capacity for every foot of wire on the armature. The commutators are made of pure tempered copper, and spring brush holders are used, so made that the friction on the commutator is reduced to a mimimum. |
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1892 Belknap Motor Co., B. C. Electric Motor & Dynamo
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