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Steel wire rope (right hand lang lay) Wire rope is composed of as few as two solid, metal wires twisted into a helix that forms a composite rope, in a pattern known as laid rope. Larger diameter wire rope consists of multiple strands of such laid rope in a pattern known as cable laid. Manufactured using an industrial machine known as a strander ...
R. S. Newall and Company established a factory in Gateshead, England, and commenced making wire ropes for "Mining, Railway, Ships' Rigging, and other purposes". From this point forward, Newall was instrumental in developing substantial improvements to submarine telegraph cables, devising a method involving the use of gutta percha surrounded by ...
He invented a twisted steel cable, later known as an "Albert Rope", which was first used in the Clausthal Caroline mine in 1834 and was the forerunner of the modern wire rope. [ 2 ] He died in Clausthal.
This means the input force on the rope is F A =F B /n. Thus, the block and tackle reduces the input force by the factor n. A double tackle has two pulleys in both the fixed and moving blocks with four rope parts (n) supporting the load (F B) of 100 N. The mechanical advantage is 4, requiring a force of only 25 N to lift the load.
In offshore applications, huge lengths of rope are often housed on drums. The anchor winches on Saipem's Semac 1 pipe laying barge, for example, each hold 2,800 metres of 76mm (3 inch) diameter wire rope in 14 layers. Saipem's Castorone, the world's largest pipe laying vessel uses a wire rope that is 3,850m long and 152mm in diameter. It weighs ...
Andrew Smith Hallidie (March 16, 1836 – April 24, 1900) was an American entrepreneur who was the promoter of the Clay Street Hill Railroad in San Francisco. This was the world's first practical cable car system, and Hallidie is often therefore regarded as the inventor of the cable car and father of the present day San Francisco cable car system, although both claims are open to dispute.
John Augustus Roebling (born Johann August Röbling; June 12, 1806 – July 22, 1869) was a German-born American civil engineer. [1] He designed and built wire rope suspension bridges, in particular the Brooklyn Bridge, which has been designated as a National Historic Landmark and a National Historic Civil Engineering Landmark.
Undeterred, the company placed a new order in 1850, but this time the cable was to be sent to a wire rope manufacturer for armouring before laying. This order was four times [14] as large as the 1849 order since the new cable was to have four gutta-percha insulated cores. This cable was a success, and became the first working oceanic submarine ...
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