. American engineer . Cincinnati Quick Change Gear Lathe. May, 1913. AMERICAN ENGINEER. for adjusting the wear, the thrust being taken against the frontend of the rear box. The spindle bearings are lubricated byself-enclosing dust proof oilers. The apron is of the box type construction, being rigidly boltedto the carriage. The rack pinion is made of steel and is oper-ated by compound gearing. The longitudinal and cross fric-tion feeds may be started, stopped, or reversed while the latheis running, but they cannot be engaged when the lathe is setfor cutting screws. A thread chasing dial is prov
. American engineer . Cincinnati Quick Change Gear Lathe. May, 1913. AMERICAN ENGINEER. for adjusting the wear, the thrust being taken against the frontend of the rear box. The spindle bearings are lubricated byself-enclosing dust proof oilers. The apron is of the box type construction, being rigidly boltedto the carriage. The rack pinion is made of steel and is oper-ated by compound gearing. The longitudinal and cross fric-tion feeds may be started, stopped, or reversed while the latheis running, but they cannot be engaged when the lathe is setfor cutting screws. A thread chasing dial is provided whichpermits the half nuts to be opened, the carriage to be run backby hand and the thread to be picked up at any point, thus doingaway witli tlie necessity of reversing the lathe for this automatic stop is also provided for throwing out the Feed Gears of Cincinnati Lathe. The reverse plate for cutting right and left hand threads is onthe outside of the headstock, and is used only for reversingthe lead screw when cutting threads and not for reversing thefeed. These machines have the feed reverse in the apron. Thescrew cutting and feed mechanism shafts are bushed through-out with bronze. The tailstock has a long bearing on the bed, and is made towithstand the severe treatment of heavy work. It is of theoffset tjpe, allowing a compound rest to be set in a plainparallel with the bed. The tailstock spindle is of large diameter,and is equipped with a bronze nut for the lead screw. A specialclamping device is used to hold the spindle in position insteadof the split barrel construction. All gear changes may be madewhile the gear is running under heavy cut. IMPROVED TYPE OF CORRUGATEDTUBES An improved process for making corrugated tubes has beendeveloped by Mr. Maciejewski, a Polish engineer, in which stand-ard wrought iron or st
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
