The annexed engravings are views of an improvement in Spark Arresters, for locomotives, invented by V. P. and B. Kimball, of Water-town, N. Y., for which a patent was granted on the 5th of last ...

Most Art. 285 surge arresters operate by "clipping off" the highest level of voltage and diverting it away from the load. In this manner, the voltage on the conductor is limited to a predetermined ...