. Locomotive engineering : a practical journal of railway motive power and rolling stock . it one of the most economi-cal tools for drilling and tapping in rail-road shops. It is belt driven and back it engages the clutches inside and revolvesthe tapping spindle at one-third the revo-lutions of the drilling spindle. Lifting thelever reverses the tap and backs it out atthe drilling speed, or at three times thetapping speed. In operating, both the drill and tap areplaced in their respective spindles, and theoperator brings the drill to the desiredpoint. After drilling, one revolution ofthe index
. Locomotive engineering : a practical journal of railway motive power and rolling stock . it one of the most economi-cal tools for drilling and tapping in rail-road shops. It is belt driven and back it engages the clutches inside and revolvesthe tapping spindle at one-third the revo-lutions of the drilling spindle. Lifting thelever reverses the tap and backs it out atthe drilling speed, or at three times thetapping speed. In operating, both the drill and tap areplaced in their respective spindles, and theoperator brings the drill to the desiredpoint. After drilling, one revolution ofthe indexed hand wheel brings the tappingspindle to the exact center of the drillingspindle. This makes only one settingnecessary to drill and tap, and there is nochanging from drill to tap and tap to drill,as is the case with only a single machine is heavy and well built, asare all the tools made by the Newton Ma-chine Tool Works, Inc., of Philadelphia. He Got the Job. Billy Armstrong is an Irishman wellknown further down the State by railroadmen. and they never tire of telling how. NEW .\ND M-VCHINE. geared on driving shaft, the arm being 6feet long from center of trunnion. Thedrilling spindle is 2 13-16 inches in diam-eter and has an automatic feed of 17inches. A lever on the side of machineenables the arm to be raised and loweredby power. One of the special features is in thedrilling head. The spindle on the left sideis driven direct by spiral gearing fromdriving shaft. From this a train of gear-ing operates the tapping spindle. Whenthe lever is in the position shown, thistaping spindle is idle, but when lowered Billy hit the Lehigh for a job as telegraphoperator. There was a vacancy and Billyapplied for it. The trainmaster gave hima rigid examination. What would you do, he asked, ifyou received an order to hold all trainsWest? Well, sor. Oid put me bhlock at rid,sthick a rid flag into the cinther of thethrack, put a coople of dozen torphaedoes
Size: 1608px × 1553px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroa, bookyear1892
