Fairbairn, William, Sir, 1789-1874 · London, Longman, Green, Longman, Roberts & Green · leaf 105
After the square-box coupling came the claw, or two-prongedcoupling, made in two parts, wedged, but more frequently keyed 80 ON MACHINERY OF TRANSMISSION. on to the ends of- the shafts, as shown in fig. 210. This was agreat improvement, as the leverage of the bearing parts was
Mills and mill-work · Machinery
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