Electrical appliances of the present day; being a report on the Paris Electrical Exhibition of 1881 (1884)
Heap, D. P. (David Porter), b. 1843 · New York, D. Van Nostrand · leaf 124
does not fit the tube tightly this arrangement acts as a brake, similar to the glycerine dash-pot in the Brush regulator. On the tube C' is wound a wire, forming a solenoid and intended to produce the separation of the carbons and to counterbalance the effect due to the weight of the positive… … bon-holder F. The negative pole is connected to the solenoid, the tube X, the rod L, and the negative carbon-holder. The points of the carbons are in contact; when the current passes the solenoid attracts the iron rod forming the end of the negative carbon-holder and tends to draw it down. Idle…
International Electrical Congress, Paris, 1881
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