Engineering News-Record Volume 43

Engineering News-Record Volume 43

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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. 1900 edition. Excerpt: ...transfer coal from the coliier in tow of a battleship to the battleshlp at the rate of not less than 15 tons per hour, with a distance of not less than 300 ft. between the two vessels. The ability oi' the apparatus to satisfy these conditions was to be determined by a sea trial. The war ended shortly after this contract was made, and all need of haste being thus done' away with, the installation was not completed until late in 1899, the final tests, which proved satisfactory, being completed in December of that year. As finally worked out and tested the apparatus is shown by Figs. 1 to 8. Fig. 1 is an engraving from a drawing showing a battleship towing a coliier with the cableway coaling device in operation-between theni. Briefly described, the apparatus is as follows: A portable shear leg ls erected on the after deck of the battleship. This shear leg is guyed to the battleship and is provided with the necessary attachments to form one of the towers or supports for the cableway. The other tower is formed by the.foremast of the coliier. Just abaft the collier's foremast and on deck is located a special form of hoisting engine having two drums. From one drum of this engine a wire rope is led to and over a pulley at the masthead and thence to a sheave at the head of the shear legs on the battleship and thence back to the collier's masthead and down to the other drum of the engine. These two lines of rope constitute the conveying rope for the bags of coal, as will be explained a little further on. In addition to them there is a third line of rope known as thesea anchor line, located above them. This sea anchor line is attached by a "knock-off hook" to the inboard superstructure of the battleship, andvpasses over a...show more

Product details

  • Paperback | 1136 pages
  • 189 x 246 x 56mm | 1,982g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236918371
  • 9781236918376