Model making; including workshop practice, design and construction of models, a practical treatise for the amateur and professional mechanic .. (1919)
Yates, Raymond F. (Raymond Francis), 1895- ed · New York, The Norman W. Henley Pub. Co. · leaf 329
326 Model Engineering A rigging, made of strips (D, E and C), has to bemade so as to provide clearance for the jib pulley whenthe boom is in a high or Ioav position. Details of theseso-called supports are shown in Figs. 238 and 239. Fourtackle supports and two pulley supports are required. … Fig. 250—The back of the derrick The cross bracing seen in the assembly of the boom,Fig. 235, is merely No. 16 iron or copper wire, woventhrough the holes bored for this purpose. The building of the mast. Fig. 242, is more difficultthan the boom, as more riveting has to be done. Theside angles of…
Machinery
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