Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 541
n. apart in the clear. The rings and centres are joined by two sets of arms C (10 in each set),which are riveted inside the rings and on the outside of the centres in recesses cored out for thatpurpose, as shown in the views. They are 4\ in. wide and £ in. thick. The two sets of arms areconnected… … There purpose. The centres have two wrought-iron hoops of H x 1^-in. iron shrunk around each,are 10 buckets, J J, 30 in. deep by 6 ft. 6 in. wide, which are fastened to the arms by means ofbrackets H, having bearings for the trunnions to turn in, thus holding the buckets, which swingaround these…
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