Mechanical movements, powers, devices and appliances; (1903)
Hiscox, Gardner Dexter, 1822?-1908 · New York, The N.W. Henley & co. · leaf 370
1510&. EXPANSION OR AN-CHOR BOLT.—A conical nut andsplit sleeve. 1510C. ROLLING LIFT BRIDGE.—Are nearly balanced inoperation with many advantages in utilizing the entire width ofchannel and dock space. Chicago Type.
Mechanical movements
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