Practical Dynamo-Building for Amateurs

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. On the other hand, the armature consists of a series of links, each forming the segment of a circle made of best charcoal sheet-iron, and insulated in a manner to be described after wards, so that the eddy or Foucault currents are retarded, and their perceptible efi'ect diminished as much as possible.