Locomotive boiler construction; a practical treatise for boilermakers, boiler users and inspectors .. . Figure 167A common form of stay bolt. The Derry-Collard Co. the manner in which it is treated are all important Fig. 167 we have a common form of stay bolt which isfrequently used for staying the narrow portion of thewater legs. The standard thread for these stay boltsamong nearly all railroads is twelve to the inch. Thisgives a thread which is strong enough to resist shearing, 199 Stay bolts break near sheet. and yet one which is not so coarse as to greatly reduce thearea at the ro
Locomotive boiler construction; a practical treatise for boilermakers, boiler users and inspectors .. . Figure 167A common form of stay bolt. The Derry-Collard Co. the manner in which it is treated are all important Fig. 167 we have a common form of stay bolt which isfrequently used for staying the narrow portion of thewater legs. The standard thread for these stay boltsamong nearly all railroads is twelve to the inch. Thisgives a thread which is strong enough to resist shearing, 199 Stay bolts break near sheet. and yet one which is not so coarse as to greatly reduce thearea at the root of the thread. The square portion H isupset in the bolt machine for screwing it into place. Inmanufacturing establishments these bolts are made inlarge quantities varying in length by half inches forshort ones, or by inches or two inches for long bolts. Fig. 168 shows a stay bolt which is very commonlyseen on a locomotive boiler, T being the outside and S the. The Berry Collard Go. Stay bolt with drilled ends. inside sheet. The bolt has been riveted over as indicatedand the hole H drilled from the outside, deep enough topass the point W, where the threads end. The bolt iseither turned down or cut on a portion of the boltupset from a bar of the diameter B. These stay bolts usually break close to the outsidesheet. This is due to the fact that the outside sheet isalways cool and the inside sheet, especially when the fire 200 Flexible stay bolts. becomes very hot, expands considerably. This carriesone end of the stay bolt up higher than its normal posi-
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Keywords: ., bookcentury1900, bookdecade1910, bookidlocomotivebo, bookyear1912
