Fairbairn, William, Sir, 1789-1874 · London, Longman, Green, Longman, Roberts & Green · leaf 117
92 OX MACIIINEEY OF TEANSMISSIOX, surface is coated Avith a copper plate, accurately fitting theinterior surface of the running box a a. The boss c c carries Fig. 227. … ON ENGAGING AND DISENGAGING GEAK. 93 also four projections eeee, which serve as guides for four screws,alternately left and right handed, and attached to the nuts //and levers gg; these screws act on the extremities of thefriction slides k k, so that when the levers g g are drawn backthey are both…
Mills and mill-work · Machinery
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