Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary (1917)
Hiscox, Gardner Dexter, 1822?-1908 · New York : The Norman W. Henley publishing co. · leaf 220
810. BOAT DETACHING HOOK.—The standard isfastened to the boat. A tongue is pivoted to its upper endand passes through the hook of the tackle-block. A leverwith an eye to catch the tongue is pivoted to the up-right standard, with a lanyard attached at the bottom.A simultaneous pulling of the two… … The hook C of the oar lockis swivelled on a post, D.which is fastened to thegunwale by a flange sta-ple and latch or by extend-ing the swivel through thegunwale.
Mechanical movements
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