. Railway mechanical engineer . er andrigidity. All motive parts of the latheexcepting the lead screw and faceplate are enclosed. In construc-tion, the lathe is a combination ofreadily accessible and generallyindependent units. The motor iseasily reached or moved and doesnot obstruct light and vision. Re-ducing gears are placed betweenthe motor and the speed box,which is in the left pedestal. Theinterior of the head, speed box,and quick change gear box maybe conveniently exposed by handholes or cover plates. The head stock is equipped with the usual Hendey taf)erspindle and bearings with sever
. Railway mechanical engineer . er andrigidity. All motive parts of the latheexcepting the lead screw and faceplate are enclosed. In construc-tion, the lathe is a combination ofreadily accessible and generallyindependent units. The motor iseasily reached or moved and doesnot obstruct light and vision. Re-ducing gears are placed betweenthe motor and the speed box,which is in the left pedestal. Theinterior of the head, speed box,and quick change gear box maybe conveniently exposed by handholes or cover plates. The head stock is equipped with the usual Hendey taf)erspindle and bearings with several distinctive features added,including the method of taking up end play on the spindle;construction of single pulley and pinion running on a sleeve readily supplied with oil; operation of the intermediatesliding feed gear by conveniently located eccentric levers;oiling of the back gear quill while in motion; enclosing allmoving parts of the headstock except the spindle nose, thusprotecting the operator and machine from Hendey 14-ln. Tool Room Lathe Motor Under Oil Pa Eighteen speed changes are obtainable, nine being directthrough a belt to the spindle and nine through the customaryback gears. The speed change mechanism is contained inan oil tight box. Maximum and minimum belt ten-sion may June, i922 RAILWAY MECHANICAL ENGINEER 355 be instantly obtained by a single screw adjustment. Thecarriage and compound rests are of new design, providingmaximum rigidity and convenience. The tailstock also isimproved in the graduation of the spindle and the method ofclamping. Motor control is by means of push an interlocking: method Ijetween the shifting levers and starting panels the speed of an a. c. or d. c. motor maybe automatically reduced while the gear shifts are control of the spindle is obtained througha treadle running the full length of the bed, which by footpressure instantly stops the spindle for examination of orcalipering the work. Triple
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
