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. 1883 Excerpt: ...into the holes, the holes being bored and rimelled out, and the discs faced for the heads and nuts to bear against. A key is fitted into the two discs, secured by screws into the one, but only fitting somewhat tightly into the other; by this means the shearing strain is taken off the bolts. Some engineers dispense with the key and projecting piece, having the ends turned quite fair, and depend on a greater sectional area of bolts for holding the discs together and taking the twisting strain. The part of each shaft which rests on the pillow block should be raised a little above the main part, and must be turned quite truly; at the same time in some cases it is advisable to turn the shaft from end to end with a rough cut, to insure a fair and true line, which tends to make the machinery run more smoothly; but when the shafting is truly forged this is not required. Repairing couplings.---The lying shafting is generally fitted rough from the steam hammer. In the event of one of these shafts breaking, a ready means for temporarily repairing it is of the highest importance. In the example (Fig. 350), the coupling is made in four pieces, bolted together lengthways with flanges, and transversely with bolts passing through discs cast on the coupling, the torsional strain being taken on four keys. Fig. 350.--Repairing Coupling. A, Coupling. B, Bolt holes. c c. Keys. n, Shaft. E, Kccess for taking coupling on shaft. Figs-352, 353.--Repairing Couplings in Cast Iron. A, Screw shaft. B, Coupling. c c, Bolts. D, Set screws. E. Recessed nut. F. Keys. G G, Set screws. H. Raised strips. We have arranged a simpler form of coupling, which possesses the following advantages. It is evident that a shaft breaking at sea must be repaired as speedily as possible, and that the contac...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.
|Title||:||Modern Steam Practice, Engineering and Electricity Volume 2; A Guide to Approved Methods of Construction and the Principles Relating Thereto, with Examples, Practical Rules, and Formulae|
|Author||:||John G Winton|
|Publisher||:||Rarebooksclub.com - 2012-05-16|