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Power Volume 55, No. 4 by Books Group
Power Volume 55, No. 4
Author: Books Group
Page Count: 58 pages
Published Date: 01 May 2012
Publication Country: Miami Fl, United States
Language: English
Format: Pdf
ISBN: 9781232370307
Download Link: Power Volume 55, No. 4

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. 1922 Excerpt: ...906 of the Dec. 6, 1921, issue of Power, the cause of the breakage of the wedge bolts has been pretty well covered. As to the remedy I think that I have it. I have tried it on a number of engines, both small and large, and in every case was pleased with the results. Using the ordinary bolt, just turn down a portion of the shank between the head and the threads to about the diameter of the base of the threads, leaving a fillet under the head as large as possible. If new bolts are to be made, an even larger fillet can be provided and a little countersinking done in the hole over several inches of its length to relieve the excessive strains close up under the head. I have a bolt working that has been in a year and a half, where an ordinary bolt would not last more than two weeks. Ponca City, Okla. Philip R. Dunton. Holes in Boiler Heads for Through-and-Through Stays Are the holes in the heads of a return-tubular boiler for through-and-through stays the same size as the body of the stays? W. E. T. Through-and-through stays usually have their ends enlarged by upsetting, so the diameter of the screwed ends for receiving the nuts may be large enough at the roots of the screw threads to afford the same strength as the body of the stay. For that purpose the diameter at the root of the screw threads should be somewhat greater than the diameter of the body of the stay and holes for entering the stay must be still larger, for they must be large enough to receive the outside diameter of the screw threads. Adiabatic Expansion Lowers Quality of Steam When using a throttling calorimeter to determine the noisture in steam the steam on the low-pressure side jf the aperture is superheated owing to the drop in pressure. In turbine practice, after saturated steam has passed thr...

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