Cyclopedia of Engineering; A Complete Manual of Steam and Machine-Shop Practice Volume 2

Cyclopedia of Engineering; A Complete Manual of Steam and Machine-Shop Practice Volume 2

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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: In order to give the engineman full command of the locomotive at all times, controlling valves are provided in the receiver. These are usually placed upon the bottom of the receiver, and are connected to the cab by suitable levers; they may, if desired, be of larger area and arranged in the upper portion of the receiver, connected with the exhaust pipe and arranged to work automatically in combination with the intercepting valve, so that the locomotive can be worked as a simple engine when required. However, on account of the arrangement of the combined admission and pressure regulating valve, which at all times, when necessary, admits sufficient steam to the low-pressure cylinder to give the locomotive its maximum power, the use of such a separate exhaust valve, whereby the engine can be worked simple for long periods, has been found in practice unnecessary, the arrangement of the admission and pressure regulating valve previously referred to, automatically performing all the requirements of a simple locomotive.. This valve operates as follows: Live steam acts upon the high-pressure piston in the usual manner. At the same time steam is admitted to the high-pressure end of the pressure regulating valve A through the connecting pipe C, causing the valve to open, as shown in the engraving, passing thence through the hollow portion of the valve, causing the intercepting valve to automatically close against its seat a. This steam flows through the passages of the intercepting valve into the low-pressure end of the receiver D and, acting upon the large end of the pressureregulating valve, causes it to partially close as soon as the requisite pressure is obtained. The amount of steam admitted is regulated by the pressure regulating valve, and an...
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Product details

  • Paperback | 134 pages
  • 189 x 246 x 7mm | 254g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236606299
  • 9781236606297