New Ordnance Material, & Armor Material in Europe; Official Report to the U.S. War Department

New Ordnance Material, & Armor Material in Europe; Official Report to the U.S. War Department

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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. 1886 edition. Excerpt: ...and at the latter in positions one on each extremity of the harbor works, the western one at a point between Sliema and Tigne of as great command above the sealevel as can be secured, and at the east on a considerably higher point. The battery in the Arsenal is made to represent the conditions sunlciently to enable the trial to be carried out satisfactorily. It will be seen in pian that the 3un and carriage traverse on circular racers H H, on a firm foundation of over 3,000 tous of concrete. The weight of the gun and carriage and platform is 152 tons. The mounting is on the same general principle as that adopted on board ship, but of course differs considerably in the carrying out. In a revolving turret no provision for traversing the gun is necessary-, consequently the gun may be made to move with its trunnions held in small blocks sliding on the fixed slide. Here the traversing platform has to replace the movement of the turret. The gun carriage is,"lhowever, kept low and small. moving freely on eighteen trucks, and along the lower edge of each bracket, as in the figure; and the recoil is controlled by hydraulic buffers fixed as little below the axis of the trunnions as may be. On board, to prevent the rolling of ship moving the gun, it is always necessary to employ toothed wheels and cogged ares. On land all this is simplified, plain trucks and racers being used. Hence on land traversing becomes comparatively easily provided for and etiected, and hence muzzle-loaders, moving into a certain position to receive their charge, have a much better chance of holding their own against breech-loaders than on board ship, as may be seen from the fact that this gun could be traversed through 180 degrees in fifteen seconds, and it...show more

Product details

  • Paperback | 32 pages
  • 189 x 246 x 2mm | 77g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236809912
  • 9781236809919