. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ble of producing. The accompanying illustration shows a12-inch close coupled lathe which em-bodies a number of excellent new featuresamong which it will be noted that thehead stock is a heavy casting with thefront and rear hearings securely hound A motor drive can be fitted to head withdirect current variable speed motor, 1J4horsepower having speeds from 500 to1,500 revolutions per minute, with perfectcontrolling apparatus. An automatic stopand reverse rod is provided which con-trols the trav
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ble of producing. The accompanying illustration shows a12-inch close coupled lathe which em-bodies a number of excellent new featuresamong which it will be noted that thehead stock is a heavy casting with thefront and rear hearings securely hound A motor drive can be fitted to head withdirect current variable speed motor, 1J4horsepower having speeds from 500 to1,500 revolutions per minute, with perfectcontrolling apparatus. An automatic stopand reverse rod is provided which con-trols the travel of the carriage in eitherdirection for feeding or screw apron is of the double plate type withtwo bearing supports for all shafts. Anew interlocking arrangement is providedso that both feed and half nut cannot bethrown in at the same time. The quickchange gear box is also a new and valu-able feature, and provides for cuttingthreads from lyi to 80 per inch, includingllA pipe thread. There are 36 changespossible which can be instantly obtainedfrom the gear box and sliding gears at the. TYPE OF 12 IN. CLOSE COUPLED L.\THE. togetlier by straight walls which arebrought up to the spindle center, thusproviding a substantial guard for thelower half of the cone pulley, the gearsbeing covered by guards which are rnadeintegral with the head. The casings areIjolted by flush head screws, thus giving adegree of rigidity and freedom from vi-bration hitherto unattained. The gearsare underneath the front bearing and thecone, supported by. legs cast on the frontand rear of the head, avoiding a longeccentric shaft and quill, avoiding alltorsional strains. The gears are broughtinto mesh by a handle just below the feedrod at the head and within easy reach ofthe operators left hand. The carriagehas long bearings on ways with deepbridge, and both cross feed and compoundrest screws are fitted with micrometercollars graduated to 1,000th of an inch. end of the lathe. Special leads c
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Keywords: ., bookcentury1900, bookdecade1900, bookidrailwaylocom, bookyear1901
