Industrial Refrigeration Volume 27

Industrial Refrigeration Volume 27

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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. 1904 edition. Excerpt: ... across the port and get the steam shut off. Suppose it took onetwcnty-fourth of a second, the piston could move, during the process, two-thirds of a foot or eight inches, and this would be one-sixth the stroke of a forty-eight-inch engine. With an angular advance of twenty degrees we would thus have the engine carrying steam to nearly three-fifths stroke, neglecting the fact that the piston speed com mences to decrease after the center is passed. The valves of a Corliss engine usually consist of portions of cylinders oscillating within cylindrical valve seats. The valve stems are usually of the T form and fit into slotted heads in the valves, allowing them to be removed without disturbing the stem upon removal of the back bonnets. The engine valves should have the most careful attention of the chief engineer and if an indicator is available, cards showing their performance should be taken at frequent intervals. If an indicator is not at hand they may be inspected from the free side of the cylinder as the engine is turned over by hand. Fig. 2 represents, in plan, the wrist plate and stud of a Corliss engine, the bearing for the reach rod being seen on the upper half of the former. Three marks, A, B and C, will be found on the stud, and the mark B on the wrist plate hub. When the wrist plate is vertical, i. 6., the center of the reach rod bearing directly above the center of the stud, the marks B on stud and wrist plate hub should be fair and the distances AB and BC on the stud represent the travel of the wrist plate either side of the vertical as it oscillates back and forth. To adjust the reach rod, C, and the eccentric rod, D, Fig. 3, place the wrist plate, A, vertical with the aid of a plumb bob, as shown, and adjust the length of more

Product details

  • Paperback | 230 pages
  • 189 x 246 x 12mm | 417g
  • United States
  • English
  • black & white illustrations
  • 1236740432
  • 9781236740434