Appleby's Illustrated Handbook of Machinery Volume 3

Appleby's Illustrated Handbook of Machinery Volume 3

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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. 1878 edition. Excerpt: ...for working at depths of from 50 to 300 feet, where a large supply of water is required as in waterworks, or the sinking of shafts for mines; in tunnels, cfcc. The working barrel is within 10 ft. of the surface of the water. An iron windbore is bolted to the valve box, which is cast solid with the barrel in small sizes, but in large sizes a separate casting is bolted to the barrel. The foot and bucket valves are of the ordinary Cornish double beat equilibrium pattern, having faces of patent metal, so constructed that when worn they can be melted out, and a fresh seating cast in and faced up without afiecting the main body of the valve. The working barrel is cast iron, strongly ribbed and accurately boreil, and its flanges are fuced and turned on the edges. The rising main, which is slightly larger in diameter than the working barrel, is of wrought iron with strong faced flanges; in small sizes, the pipes have welded, and in large sizes double rivetted longitudinal seams. AH bolt-holes in the pipe flanges are accurately drilled to a template, so that the pipes are interchangeable. When the pump is required for sinking the upper length of the rising main consists of a casting turned to fit a stuffing box, having feet to rest on a girder, which is placed across the well. The head of the pump resting in this way allows that portion of it which is below to sink gradually ns the excavation proceeds, until a further depth of from 4 to 5 ft. has been reached, when an extra depth of rising main is added, and the work proceeds as before. The pump-rods are of wrought iron, with sockets and keys arranged to be easily disconnected and put together again; the rods are made in lengths to match the; lengths of rising main. This type of pump is very suitable more

Product details

  • Paperback | 34 pages
  • 189 x 246 x 2mm | 82g
  • Miami Fl, United States
  • English
  • Illustrations, black and white
  • 1236555635
  • 9781236555632