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When an exactly suitable alternate-current motor has been invented the standard electric light installation will be practically one apparatus with the ventilating fan, and the cost of the latter will hardly be felt as a separate item. In cooking there is in existing ordinary methods the same enormous waste of heat as there is in the warming of rooms.
On a large scale alternate current machines are still employed for certain purposes in electric lighting, as, for example, for use with the Jablochkoff candle. Large alternate-current machines have been devised by Wilde, Gramme, Siemens, De Meritens, and others. Engineering. Dr. Odling delivered a lecture on the above before the Chemical Society, London, February 2, 1882.
Hefner von Alteneck, Shuckert, Brush, Edison, and several others who have improved the direct action machine, have not been found in England. But when we deal with alternate-current machines, then we find the Wilde, Ferranti, and various others; so that the tendency in England has been very much to improve and work upon the alternate-current machines.
One improvement in domestic economy greatly needed in the twentieth century consists in the invention of a really effective simple and economical "alternate-current" motor. This is a matter which will be referred to in dealing with electrical machines. That the problem will be solved before many years have passed there is no good reason to doubt.
In other countries it is exactly the reverse; in fact, in America I never saw one single alternate-current machine. When Professor Forbes wanted an alternate-current machine to illustrate a lecture that he gave, it was with the greatest difficulty that one could be found, and, in fact, it was put together specially for him.
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