Industrial Management; The Engineering Magazine Volume 20

Industrial Management; The Engineering Magazine Volume 20

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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. 1901 edition. Excerpt: ...a considerable problem to be met. The first engines of Savery, Newcomen, and Lord VVorcester's inventions were applicable exclusively to pumping, and it was not until James Vatt's devotion to the motive problem developed the crank and fly-wheel shaft type, in which the reciprocating motion of the piston could Pmihlce cents011tinu0us rotation of a crank shaft, that the steam-engine became the handmaid of the factory system, in the latter end of the cl-ghteellth centscents11tl11')'-By replacing the muscle of the human or animal subject by a force tirelessly supplied from the combustion of coal, the problem of aggregation of motive power and its continuous action up $0 1t$ maximum of efiiective output became the simple but fundamental condition of modern production. Bv using the constant and controllable en@1'8'Y Of the fuel consumed, instead of the variable and, rather than the unusual condition. It became atly the unit or aggregate of motive power With all the advantages entailed by bringing such larger units under the supervision of a diminished staff. It IS not an easy pr to have anything like fairness in a comparison of the relative costs of human or animal motors and the motors which use steam. If it be conceded that, taken for a considerable number of hours, the average output of a human unit is about one-tenth of a horse power, we shall require ten men for each horse power of energy delivered. If the type of human motor employed for this purpose was of an exceedingly low grade in the intellectual or any other scale, it might be obtained for a dollar a day. At $10 a day, therefore, for the horse power on the above calculation. and for 300 working days in the year, we should expend $3,000 for the horseshow more

Product details

  • Paperback | 410 pages
  • 189 x 246 x 21mm | 730g
  • United States
  • English
  • black & white illustrations
  • 1236805992
  • 9781236805997