. Railway mechanical engineer . Ik 4 standard Taper Bolt Sizes Used on the Central of Georgia ard bolts under the head varies by 32nds from 13/16 in. to1 17/32 in., and each size is designated by the number of 32ndsin its diameter. The standard lengths range from 4 in. to 16 in. All reamers are sized and marked at the large end. to corre-spond with the size of the bolt under the head, so that both can beordered according to the size of the reamer. With this arrange-ment the hole is reamed to suit the bolt, and only in specialcases where it is difficult to ream, is the bolt fitted to the
. Railway mechanical engineer . Ik 4 standard Taper Bolt Sizes Used on the Central of Georgia ard bolts under the head varies by 32nds from 13/16 in. to1 17/32 in., and each size is designated by the number of 32ndsin its diameter. The standard lengths range from 4 in. to 16 in. All reamers are sized and marked at the large end. to corre-spond with the size of the bolt under the head, so that both can beordered according to the size of the reamer. With this arrange-ment the hole is reamed to suit the bolt, and only in specialcases where it is difficult to ream, is the bolt fitted to the hole. The bolts are largely carried in store stock. However, in tlieerecting shop suitable bins are provided for a small number of 194 RAILWAY AGE GAZETTE. MECHANICAL EDITION Vi^ 89. .\o. 4 each size. Frequently mily one or two bolts are needed andthis saves special trips to the store house in such cases. Whena number of bolts are needed for bolting up cylinders, newframes, they are drawn from the store, cut to length,. Cutter Heads, Blades and Gages foiGages for Testing Adjusting the Heads;Turned Bolts where the machinist reams threaded, and placed at tlie engirthe holes and drives them in. The group of machine tools devoted to the linishing of boltsis made up of one 3-in pointer, a 4-spindIc bolt turner, a boltalterer, one triple head bolt cutler, one 1-l-in. and one I()-in. en-
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
