Abstract
THE general scheme of the Niagara Falls Power Company has already been described in these columns (NATURE, vol. xlix. p. 482). We understand that the great power house is now complete, and the foundations ready for the three great 5000-horse power dynamos which have been constructed by the Westinghouse Company. The turbines and vertical shafts up to the floor of the power house have long been in place, and the dynamos may now be shipped any day. They have already been revolved in the shops at full speed. Our readers will remember that there is no gearing. The dynamos are on a vertical shaft, and the revolving fields are external to the armature, forming a sort of bell-cover to it, with the poles pointing radially inwards. This was the only design which Prof. Forbes could make to fulfil the requirements of the turbine designers as to maximum weight and minimum fly-wheel effect to be allowed. It gives a splendid mechanical construction, as the revolving pole-pieces and coils are retained in place against the centrifugal forces by the nickel-steel ring which forms the yoke.
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Progress of the Cataract Construction Company's Works at Niagara. Nature 51, 109 (1894). https://doi.org/10.1038/051109a0
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DOI: https://doi.org/10.1038/051109a0