Locomotives; Simple, Compound, and Electric

Locomotives; Simple, Compound, and Electric

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 edition. Excerpt: ... of an inch, and that of the discharge-valves. It is most important that the prescribed amount of lift of air-valves be maintained, and if exceeded by wear from action, which will ultimately occur, should not be permitted to become excessive, in which event valves and seats may both be ruined by pounding upon each other, while prompt attention may save both, and prevent disagreeable pounding. In renewing bushing 43 the shoulders upon which it rests in position should be carefully ground in to prevent leakage of air past these, then adjust set-screw 46, when cap-nut 29 may be screwed firmly, but not harshly, upon it. With 125 pounds steam-pressure, the 8-inch pump when in good condition will compress o to 70 pounds pressure of air in a standard main reservoir 26 inches in diameter by 34 inches long (outside measurement), about 9 cubic feet capacity in 88 seconds, and from 20 to 70 pounds in 62 seconds. The efficiency of the pump and its condition may therefore be readily ascertained at any time desired. If other reservoirs are used than the dimensions given, the duty may be calculated in exact proportion. THE QUICK-ACTION TRIPLE-VALVE. A large view of the triple-valve in cross-section is shown in Fig. 152, a transparent view of the slide-valve in Fig. 153, and of the slide-valve seat in Fig. 154, to which references will be made in the following explanation of its purpose and functions. The quick-action triple-valve is wholly automatic in principle, that feature existing in the construction of the plain automatic triple-valve by which its mechanism could be "cut out " or made inoperative, or permitting the use of the " straight-air" or non-automatic form of brake, being entirely omitted. m As its name implies, the quick-action...show more

Product details

  • Paperback | 108 pages
  • 189 x 246 x 6mm | 209g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236633407
  • 9781236633408