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Jakob Emil Noeggerath
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21,002. Noeggerath, J. E. Sept. 22, 1905, [date applied for under Patents Act, 1901]. Armatures ; cooling and ventilating. - A rotor body is constructed of concentric cylindical members, shaped so as to form an internal air chamber connected to the outside by axial and radial passages. In the unipolar machine shown in Fig. 1, each half of the rotor body comprises two castings A<1>, A<2> of stepped diameters, which engage at their two ends, but are separated in the middle by an air chamber from which pass axial passages a', a<2> and radial passages a<3>. A ring-shaped casting A<3> fits over the end of the casting A'. Deep slots a' between the castings serve to prevent eddy currents. The construction effects the cooling of the collector rings c as well as of the rotor body. The conductors C are held by a cylindrical member A<4>.
GB190621002D1905-09-221906-09-21Improvements in Dynamo-electric Machines.
ExpiredGB190621002A
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