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Unique Battery Motor

A short while ago I made a little motor as shown in the illustration. The armature was a three-pole one from an old motor and had the windings taken off. I mounted the axle on which the armature and commutator were fixed between two metal uprights, and under the armature put an electro-magnet from an old bell.

The brush was adjusted so that the little screw on the commutator just hit it. To make the other connection to the commutator I put some small pieces of wire in the screw holes so that they pressed against the shaft.

The current coming from the battery passes through the electro-magnet, upright, axle, commutator, the brush and then back to the battery.


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