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Proceedings - Institution of Mechanical Engineers Volume 2

Proceedings - Institution of Mechanical Engineers Volume 2

Proceedings - Institution of Mechanical Engineers Volume 2.cInstitution of Mechanical Engineers
Proceedings - Institution of Mechanical Engineers Volume 2
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Author: Institution of Mechanical Engineers
Number of Pages: 150 pages
Published Date: 21 May 2012
Publisher: Rarebooksclub.com
Publication Country: United States
Language: English
ISBN: 9781236360960
File size: 44 Mb
Download Link: Proceedings - Institution of Mechanical Engineers Volume 2
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1896 Excerpt: ... inch rope. Temporary pulleys were stuck in the ground all round the field, just like fitting up a mill. It took about half a day to put a rope round 30 or 40 acres; everything depended npon whether the fences were straight 'or crooked, because corner pulleys had to be put in at all bends. The ropes ran at 3,500 feet per minute; and seeing that with a 7-8ths inch manila rope it was possible to transmit from 40 to 60 I.H.P. at that speed, he considered the sizes of ropes given in the paper for the various powers were excessive. On pulleys of small sizes it would be better he thought to run smaller ropes than many of those that were now employed on small pulleys. Mr. Bryan Donkin, Member of Council, mentioned as a matter of history that in 1868 he had seen at Colmar in Alsace many long steel-wire ropes used for driving shafts in cotton mills, which were (Mr. Bryan Donkin.) arranged and designed by C. Frederick Hirn, brother of George A. Hirn. These wire ropes had first been used in 1852. Mr. W. Lloyd Wise mentioned, both as a matter of history and also as indicating how different minds were sometimes directed to the same subject, that, before the expanding pulley had been brought out by the late Mr. James Combe, to whom so much credit was due for its introduction, his father, the late Mr. Francis Wise, who had been a Member of this Institution, had really worked the plan out on paper in its complete form; and he believed that somewhere about 1858 or 1859 his father had written to the late Mr. Combe, drawing his attention to this fact as a matter of interest. Professor John Goodman thought that the large factor of safety employed in rope driving would account to a great extent for the discrepancy between the power transmitted, as given in the paper (page 357), ...

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