File:Transactions (1871) (14586357378).jpg

Identifier: transactionsmining23amer (find matches)
Title: Transactions
Year: 1871 (1870s)
Authors: American Institute of Mining, Metallurgical, and Petroleum Engineers
Subjects: Mineral industries
Publisher: New York (etc.)
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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nese-steel would outwear not less than four pins of ordinary steel. Thesame remarks apply to the bushes u.«ed both in the bucket-backs andlinks. So successful has this application proved, that HadfieldsSteel Foundry Company, of Sheffield, England, has now sent outmore than 12,500 pins and 8000 bushes of manganese-steel. Prac-tical engineers, such as Mr. Leader Williams, of the Manchester ShipCanal; Mr. Charles L. Hunter, of the Bute Dock.^ Cardiff; Mr. R.Pawley, of the Hull and Barnsley railway, at the Hull docks;Messrs. Cochrane and Fowler, of the Preston Corporation DredgingDepartment; Mr. T. E,. Salraond, of the Belfast Harbor Office;well-known contractors, such as Messrs. S. Pearson & Son, of Lon-don, in their Mexican drainage canal (contract; different drcdging- * Fig. 1 in Plate III. shows an ordinary steel pin, as used by tlie Prc-ton Cor-poration after three months wear. Fig. 2, a manganese-steel pin after ten monthswear. 166 IRON ALLOYS WITH REFERENCE TO MANGANESE STEEL.
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IRO^^ ALLOYS WITH REFERENCE TO MANGANESE STEEL. 167 contractors in Holland, India, Australia, and Canada, along withother users, one and all, have spoken of the results obtained as mostsatisfactory. Full details are given in Table III. Table III.— Wear of Manganese-Steel Dredger-Pins. Name. No.in Material. Time Official Report by the in use. Engineer. S. Pearson & Sons,London. 3850 Manganese-steel. 6 months. Scarcely perceptible. Bute Docks, Cardiff; 601 Manganese 4 months. Little or no wear. (Mr. C. L. Hunter, steel. Engineer ) Hull & Barnslev Rail- 230 Manganese- 7 weeks. No perceptible wear. way and Docks Co. steel. (Mr. R. Pawley, En- Ordinrv steel 7 weeks. Worn ;. gineer) * Manganese-steel. 19 weeks. Showed slight signs ofwear. Do. 27 weeks. Worn i. Do. 77 weeks. Apparently would do adeal more work. Ordinry steel 10 weeks. After 10 weeks have to berepaired. This can be done threetimes, and the pioces are then putCD the scrap-heap. Preston Corporation— 418 Manganese- 8

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