Baille, Jean Baptiste Alexandre, b. 1841, Armstrong, John W., ed · New York, Scribner, Armstrong, and co. · leaf 260
mps moved by elec-tricity. Among this order of inventions may be ELECTRIC MOTIVE POWERS. 233 classed the magic drum. A drum is suspended inthe air ; it gives forth sounds, it beats the charge, itexecutes whatever regimental call is required of it ;the sounds follow the word of command, they… … Cj_ vissas***» Pump moved by Electricity : communicates with an electro-magnet placed in theinterior of the drum. When the current passes, theelectro-magnet attracts its armature, and makes thedrumsticks, which are also placed in the interior ofthe drum, play. On the other hand, when the cur-rent…
Electricity
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