Cyclopedia of mechanical engineering; a general reference work. Editor-in-chief Howard Monroe Raymond. Assisted by a corps of mechanical engineers, technical experts, and designers of the highest professional standing (1908)
American School (Chicago, Ill.), Raymond, Howard Monroe · Chicago American Technical Society · leaf 279
DOUBLE COMMUTATOR MOTOR .COMBI^ED WITH FIELD WEAKENING). The additional cost of the double commutator motor, togetherwith the maintenance of two commutators instead of one. areobjections to this system that, in our estimation, offset its advan-tages for other than special castas. … ffetf./oer Min. of face P/ateFig. 11. (3) EDISON THREE-WIRE SYSTEM. The combination of the Edison three-wire system with fieldweakening permits of a range of 4 to 1, with but 100 per centincrease in speed by the latter ineans, and, consequently, elimi-nates commutator troubles to a marked extent.…
Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
