. Railway mechanical engineer . times as long in doing theirwork without special tools as would have been requiredwith them. Considerable credit is due the Tool ForemensAssociation for the development of tools and jigs for theroundhouse. Figs. 10 and 11 show a very successful superheater unitgrinder for roundhouse use. There are two grinders in theset; one for the ball on the end of the superheater unit andthe other for the socket in the header. These are made upof steel centers on which are cast the babbitt grinding sur-faces in the special moulds, as shown. These are arrangedto be threaded i
. Railway mechanical engineer . times as long in doing theirwork without special tools as would have been requiredwith them. Considerable credit is due the Tool ForemensAssociation for the development of tools and jigs for theroundhouse. Figs. 10 and 11 show a very successful superheater unitgrinder for roundhouse use. There are two grinders in theset; one for the ball on the end of the superheater unit andthe other for the socket in the header. These are made upof steel centers on which are cast the babbitt grinding sur-faces in the special moulds, as shown. These are arrangedto be threaded into the end of a No. 1 Morse taper shankand, like all babbitt grinders, may be easily renewed. F. D. West (C. G. W.) showed a number of specialtools for the enginehouse. A box tool for refinishing theends of leaky gage cock stems is shown in Fig. 12. Thishas two sets of cutters, the first set turning off the threadsand the other tapering the end of the spindle. This hasthe advantage that it always maintains the proper relation. Fig. 15—Milling Cutters and Valve Chamber Boring Cutters between the inner end of the threads and the seat. It mayeasily be used by hand and it can be used in making newstems. In the latter case a brass rod of the required sizeis threaded for its entire length and then cut up into suitablelengths. These are gripped in a drill press chuck and rundown into the tool. Fig. 13 shows a tire removing device which is in fact aspecial type of air jack. After the tire has been heatedand expanded the end of the jack is placed against theinside face of the opposite tire. The plunger pushes thetire off and is prevented from traveling out too far by a3-in. collar which strikes the wheel center. DISCUSSION Several of the members spoke strongly in favor of thetool foremen giving their best thought to devising specialjigs and tools for use in the enginehouse, for the need ofsuch things in the enginehouse is very great. Every meansshould be given the enginehouse force t
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
