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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

An illustration from 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, leaf 220
812-813. PIVOTED STEPS for a boat-landing. One edge of each step is pivoted tothe lower stringer, the other edge to the upperstringer by a hanger. On a level the stepsform a floor, as the end of the ladder falls withthe tide the hangers lift the forward edgeof the step to keep it level. The shore…

Mechanical movements

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