e new machine of Sir William Thomson and Mr. Fer-ranti consists simply of a wavy or gridiron-shaped ring ofcopper revolving between two sets of electro-magnets.There is no commutator, as in other machines, and the costof construction is much reduced. It is stated that the experi-mental trials have… … IMPROVED THREE-CYLINDER ENGINE. or in other words, that the power required to produce 12lamps of 30 candle-power each by the Brush system is,roughly speaking, about four times greater than that neces-sary to give the same result in the former. The electro-mag-nets of the new machine are intended to…
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