[Bubier], Edward Trevert, 1858- [from old catalog] · Lynn, Mass., Bubier pub. co. · leaf 62
t it sends a current ofair directly on to the point of contact of the brushesand commutator which blows out the spark. The largest machines have an electro-motiveforce of 3000 volts, and will maintain 63 arc lightsin a single circuit. IOOO K. W. TJiree-PJiase Rotary Converters.—The rotary… … RECENT APPLICATIONS. 61 the field frame is made of cast iron, and its upperhalf is fastened to the lower half by bolts hiddencompletely within recesses cored in the side sup-ports, thus doing away with unsightly pro-jections and improving the appearance of themachine. The poles also embody the same…
Electricity
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