tised studs passing through field magnet are in parallel circuit, practically forming this, a sheet of mica is selected which can be crowded holes in the ends of a bar fitted to and adjustable on a a large conductor of small resistance, and the conduc- into the slits. Now, if the slits have been… … the other vertical rod, ex- tending to the top of the magnet. These vertical The commutator bars thus formed are placed be- rods are connected with the terminals of the winding tween the collars, D D, in alternation with the mica of the field magnet, as shown in Fig. 1. strips, with the bars…
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