Scientific American 393 DECEMBER 3, 1904. circuits the minimum release magnet, causing it to let NEW FORM OF LIQUID RHEOSTAT FOR STARTING go the drum, which immediately returns, by gravity, 3} ECTRIC MOTORS. since it is suitably weighted, to the position of inter- BY OU BELGIAN CORRESPONDENT.… … ning from the shunt coil The use of liquid resist- around the magnet and back ances offers certain advan- tages. The superheating to the wire in the axis of the drum, which connects with that not only: damages me- the other side of the armature and shunt coil, as above tallic resistances, but,…
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