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A Treatise On The Principles And Practice Of Dock Engineering

Forfatter: Brysson Cunningham

År: 1904

Forlag: Charles Griffin & Company

Sted: London

Sider: 784

UDK: Vandbygningssamlingen 340.18

With 34 Folding-Plates and 468 Illustrations in the Text

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102 DOCK ENGINEERING. 3, The strain upon a single chain from some unseen obstacle might cause a fracture, with the conséquent loss of the bucket. With a double chain Figs. 64 and 65.—Priestman Grab. the nsk of fracture is diminished, and loss of the bucket could only occur in the event of both chains giving way. 4. A double chain grab can discharge its load as gradually as may be

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