The Ladies' Repository Volume 1-2

The Ladies' Repository Volume 1-2

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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. 1841 edition. Excerpt: ...itself. The best locomotive engines in present use rest on six wheels. Two of these are larger than the others, and are driven by the engine. In this country the four small wheels are joined by frame work under one end of the carriage, and the other end rests on the large wheels. The locomotive i propelled by high pressure steam power. Two cylinders are generally used, and to the piston of each cylinder a connecting rod is adapted, which is applied at the other extremity to a crank on the axle of one of the pairs of wheels on which the engine is carried. Upon a well constructed railroad, a horse power can propel a load of more than twenty tons. Fifteen tons is a common load on a level road. The advantage of a good railroad over a turnpike is about as twelve to one. A canal has the advantage in this respect over a railroad, when horses are employed as the propelling power. Iut if speed be the object, it is otherwise. In this case railroads are superior to canals, even when horses are used as the moving power. Ten miles an hour is the greatest speed that can be maintained by horse power on a canal, but fifteen miles an hour can be accomplished on railroads. The reason of this difference is the increased resistance to motion in fluids at a high velocity. Railroads are valuable principally from the fact that steam can be used in propelling the cars. By this means great speed may be obtained. At present from twenty to twenty-five miles an hour is a common rate of locomotion on railroads. This is sometimes increased to thirty, forty, or even fifty miles an hour. It is an interesting scene to witness from twelve to twenty cars, each of which accommodates fifty persons with seats, moving at the rate of twenty-five miles per hour, more

Product details

  • Paperback | 714 pages
  • 189 x 246 x 36mm | 1,252g
  • United States
  • English
  • black & white illustrations
  • 123698112X
  • 9781236981127