Power Volume 17

Power Volume 17

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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. 1897 edition. Excerpt: ... curve to the other, imparting a like motion to the other end of the lever G, and through the rod H and right-angled arm I, to the valve rod K. It will be observed that this valve motion is intermittent. There is another valve in the water cylinder chest, which is called the supply valve--as it opens and closes the communication between the water chest and the rising main, and is operated from the roll levers c, through the connecting rod L and lever M, attached to the valve rod; this motion to the supply valve is also intermittent, and made by the slot in the rod L and lever M. The ends of the lower levers B and B of the steam valves arc connected to weighted plungers N and N', working in small, open cylinders, one for each steam valve, the gravitation of the weighted plungers opens the steam valves through the rods O, and lever P, attached to the valve stems, the time taken to open the ivalves wide being regulated by the velocity of the water forced out of the cylinder, der R. The latch bolt "s"--shown on the sketch as withdrawn---enters a socket in the plunger by the action of the weight on its back, and holds the plunger there until it is time to open the upper steam valve again on its next downward stroke. The closing arm A moves on without producing any further motion to the lower lever B, its toe simply resting on the curve of the arm as it passes under it. The steam valve being now closed, the balance of the down stroke is made by the expanded steam, while frame or yoke "a" is descending, and the water cylinder piston C is at full stroke toward steam cylinder m, the admission of valve K of the former, has just accomplished its half movement--that is, it is square over its cylinder ports, as will readily be...show more

Product details

  • Paperback | 734 pages
  • 189 x 246 x 37mm | 1,288g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236774345
  • 9781236774347