The Motorman and Conductor Volume 31

The Motorman and Conductor Volume 31

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1922 edition. Excerpt: ...motor. The armature is made up of hundreds of sheets of special silicon steel, little thicker than a sheet of heavy butcher's wrapping paper. After the wires are hidden away, the rotating part is bound with phosphor bronze wire. Each ounce of this wire involved the carrying of its ingredients almost 16,000 miles; for the Montana copper traveled 2,745 miles, the zinc came 2,000 miles from Oklahoma; the tins 11,000 miles from Singapore, the finished wire was then brought 314 miles more to the electric works. What a_ remarkable accomplishment in transportation and manufacture; that those 111 materials are gathered in the four quarters of the world by white, black, yellow and brown toilers; then carried a distance equal to a trip to the moon; then assembled into simple and reliable electric motors; and that these motors are made available to the public on such favorable terms that in addition to their universal use in industry--millions of women have learned to operate them for lessening drudgry in the home. Practically the same materials are required to make radio apparatus and electric meters and transformers, even the complete electric locomotives that now haul railroad trains across the Rocky Mountains, one mile above the level of the sea. Just stop and think a few minutes about what a wonderful thing modern industry is. Think, not only of the inventions themselves, such as radio, but think of the scientists who delved down deep into the electrical mysteries. Remember that--unconciously co-operating with them, are thousands of men who work in distant lands, and who find, box and carry the raw materials. Picture the reddish brown Hindu with perhaps no clothes above the waist except the turban on his head. He is working today to more

Product details

  • Paperback | 556 pages
  • 189 x 246 x 29mm | 980g
  • United States
  • English
  • black & white illustrations
  • 123675672X
  • 9781236756725