. Electric railway gazette . FIG. 7.—EFFICIENCY CURVk. ing the fact that these coils are so nearly surrounded onall sides. No compound winding is used on these dyna-mo . since, it is claimed, the balancing coils afford acompounding vastly more effective than the compoundcoils of the ordinary dynamo. All of the armatures for the Ryan dynamos of what-ever capacity, and whether wire-wound or bar-wound,are constructed on the same general style. The coresare built of thin plates of a special steel, the distinctivefeature of which is its unusually low hysteresis plates are stamped out in th
. Electric railway gazette . FIG. 7.—EFFICIENCY CURVk. ing the fact that these coils are so nearly surrounded onall sides. No compound winding is used on these dyna-mo . since, it is claimed, the balancing coils afford acompounding vastly more effective than the compoundcoils of the ordinary dynamo. All of the armatures for the Ryan dynamos of what-ever capacity, and whether wire-wound or bar-wound,are constructed on the same general style. The coresare built of thin plates of a special steel, the distinctivefeature of which is its unusually low hysteresis plates are stamped out in the form of rings, and aseries of long slots are punched near the edges. Theserings are then clamped firmly to a central hub or spiderby means of brass end plates. There are no bolts pass-ing through the laminated core, and no iron comes incontact with these plates. As a consequence of thisthere is no leakage of magnetism and no development ofpotential in any part of the core to cause eddy currentsand waste energy. The holes
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyo, bookyear1895
