Engineering Volume 31

Engineering Volume 31

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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. 1881 edition. Excerpt: ... solid ogival head, the butt end of which fits within the case, and is fastened to it by screws. The rear end of the case is reinforced by an internal ring and an open casting is also screwed to it; this casting, which extends about 8 in. to the rear of the case, is cylindrical, but with the metal cut away except at the ends, which are connected by three ribs, parallel axially and converging to the rear end, which contains a socket for the stick to be screwed into. The latter is of wood, coned at the front end and covered with sheet iron, a screw being introduced for attaching it to the case, and the rear end is provided with an iron loop through which the chain is passed. The following are the dimensions of the leading parts of the 2 in. and 3 in. rockets of this class: 2 in. Qiameter-3 in. Diameter Body.-m. in. Total length of rocket 23.5 34.5 Len h of case 15 Insi e diameter 2.05 3.1 Thickness of case.05.06 Length of head 5.2 8.75, base ring... 1.1 1.35 Total length of base 5.8 8.3 Number of ribs.. 3 3 Slick: Total length 39.4 39.9 Largest diameter 2.2 2.3 Smallest, 2.0 2.0 Length of chain 87. 122.5 Veight of rocket complete 15.5 lb. 42.25 lb. The German anchor rocket is very similar in general form to those just described. Instead, however, of the head being ogival it is formed with four short arms and flukes; the base piece is tripoidal and not cylindrical, but is made with three ribs and open spaces between them, and the stick is of thin sheet metal formed into a tube about 2.3 in. in diameter. The German rocket stand consists of an open sheet-iron trough 12 ft. 9 in. long, and trapezoidal in form with a rounded bottom, in which at the front end a slot 1 in. wide and 10.9 in. long is formed for the chain to pass through. The upper...show more

Product details

  • Paperback | 1176 pages
  • 189 x 246 x 58mm | 2,050g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 123675154X
  • 9781236751546