. Railway mechanical engineer . The articles to be machinedare usuallv held l)v means of a regular convertible two-jawto three-jaw universal lathe chuck, titled in most cases withfalse jaws. Wherever it is possible to true the false jawsin place, thev are left soft and frequently trued up to main-tain accuracy, especially where holding a turned surface fora second operation. All operations of this tvpc of macliine are automaticallyperformed after the piece is chucked and the starting leverthrown off. At the completion of the cycle, the machineis autcmaticallv tripped and stopped, thus preventi
. Railway mechanical engineer . The articles to be machinedare usuallv held l)v means of a regular convertible two-jawto three-jaw universal lathe chuck, titled in most cases withfalse jaws. Wherever it is possible to true the false jawsin place, thev are left soft and frequently trued up to main-tain accuracy, especially where holding a turned surface fora second operation. All operations of this tvpc of macliine are automaticallyperformed after the piece is chucked and the starting leverthrown off. At the completion of the cycle, the machineis autcmaticallv tripped and stopped, thus preventing a repe-tition of the cvcle and possible spoiling of work should theoperator be occupied elsewhere. This feature can also bemade use of in tapping or threading with a collapsing injure the operators attention during this operation, thethreading tool can be placed on the ^t face, so that theautomatic trip feature stops the machine prior to this opera-tion It then requires the operator to .^tart the machine for. EoU ringer cyliiuicri,. Bell rinjcr pistons. Air pnnip piston heads. Tank hose nuts. Injector pipe nuts. Crosshead pin nuts. Knuckle pin nuts. Air pump packing rings. Oil cup covers. Packing sliding plate rings. Injector pin ■\ir valve rod valve bull valve packing check bodies,(irease cup pin bushings. Spring rigging bushings. Spring rigging pins. Lift shaft bolts. Rod dowels. Eccentric set sciews. Brake rollers. Studs. Reversing valve plates. Oil cups. Main rod key washers. Nuts of various kinds. Iacking glands. \ alve stems. Set screws. .\utomatic screw machines, single and multiple spindle,are used in railroad shops for finishing the following parts: Cro5shead shoe rod box rod pins.\alve rod work pin? Throttle lever connecti
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
