338 MODERN STEAM PRACTICE . specially constructed in the warehouses , as shown in Fig . 215 . These cranes are fitted for raising grain in tubs containing 21 cwts . each , at a rate of 50 tons per hour under the most favourabte conditions ; … Plan - foot of the jib , but this is only required for the largest dass of vessels . The motions are all ef - fected by hydraulic power , under the control of one man stationed on ä platform in the tower . The grain is filled into tubs in the hold of the vessel , and to find the best form for these…
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