Machinery Volume 8

Machinery Volume 8

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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. 1901 edition. Excerpt: ...alone the same line, we find the exterior angle of an octagon to be 135 degrees. Set the piece to be cut in the chuck and cut the side 1.5304 inches. Then with the protractor set to an angle of 135 degrees, turn the piece so that the planed side will coincide with it, and repeat until the eight sides are cut. In the accompanying cut, A Is an exterior angle, and is found by using the geometrical rule: The sum of the exterior angles of any polygon equals two right angles, times the number of sides less two. Example: To find the exterior angle of an octagon. Since there are eight sides, we have 2 (8--2) = 12 right angles; and one exterior angle is equal to 12-r-8 = IVi right angles = 135 degrees. B is the angle at the center and is found by dividing 360 degrees by the number of sides, or 360-f-8--45 degrees Beaver Falls, Pa. John Gillen. OIL ANTI-SPLASH DEVICE. Editor Machinery: Our bolt cutter gave a great deal of trouble by spattering oil on the machine and its operator, and an investigation showed that the trouble was caused by air being mixed with the oil. In order that the reservoir tank might be removed for cleaning, the supply pipe had been provided with a loose joint and the supply of oil sometimes ran low enough to allow air to be sucked in during part of the stroke. The The chords are given to the nearest thousandths.; discharge was piped as shown in Fig. 1, the surplus oil escaping through the relief valve and returning to the tank. To remedy the trouble 1 made the alterations shown in Fig. 2. On the pipe from the pump I put a T which was a size larger on the run than the pump pipe. From one end of this T a nipple and a tap formed a small oil pocket A. From the other end of the T a pipe ran to a second T having a side branch to the relief...show more

Product details

  • Paperback | 394 pages
  • 189 x 246 x 21mm | 703g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236611101
  • 9781236611109