The engineer's sketch-book of mechanical movements, devices, appliances, contrivances and details employed in the design and construction of machinery for every purpose; (1902)
Barber, Thomas Walter. [from old catalog] · New York, Spon & Chamberlain · leaf 53
iron. A balance weight is fixed at A to balance the overLanging jib. 329. Swing derrick crane, generally of wood. The jib turns three- fourths of a circle, and the two guys are fixed at an angle of 90°apart, and well secured by anchoring or loading, often made withvery long jib for builders work.… … 521 -M :te^ N -^ ^SdA 322.
Mechanical movements
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