he magnet. These vertical The commutator bars thus formed are placed be- rods are connected with the terminals of the winding i. tween the collars, D D, in alternation with the mica Pa of the field magnet, as shown in Fig. 1. strips, with the bars arranged according to their num- bers. The flange,… … with the screw in the next bar in order ner above indicated, a battery of four or five Bunsen cells must be conrected with the binding posts, or in the commutator cylinder. The CYLINDER. a dynamo may be used instead of the battery. It outer terminal of the, second coil is connected with the screw…
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