. Railway mechanical engineer . ACTDC GRINDING DRY PIPES BY V. T. KROPIDLOWSKI The grinding of steam and dry pipe joints is a big item ofback shop expense. In a shop with an average output of 25locomotives per month the pay roll of the steam pipe gangamounts to about $400 a month. To be able to grind in fourteenvets of pipes in a month a gang of six men cannot meet withmany had joints. From these considerations it is evident thatany means which can be devised that will facilitate the grind-ing of joints will effect considerable saving. The illustration shows a device for grinding dry pipe join
. Railway mechanical engineer . ACTDC GRINDING DRY PIPES BY V. T. KROPIDLOWSKI The grinding of steam and dry pipe joints is a big item ofback shop expense. In a shop with an average output of 25locomotives per month the pay roll of the steam pipe gangamounts to about $400 a month. To be able to grind in fourteenvets of pipes in a month a gang of six men cannot meet withmany had joints. From these considerations it is evident thatany means which can be devised that will facilitate the grind-ing of joints will effect considerable saving. The illustration shows a device for grinding dry pipe jointson the front tube sheet, which is designed to be set up in thefront end. The original crank used for grinding by hand isshown at A. The feed screw B and brace C are also part of. Motor Attachment for Grinding Dry Pipes the hand equipment. A Little Giant No. 2 air motor furnishesthe power, the speed being reduced two and one-half times bythe gears D and £, from a motor speed of about 125 AMorse taper shank is welded on the end of the small gear shaft,to which the motor is attached. To the end of the large gearshaft a crank arm G is fitted. This is held in place by a setscrew and imparts oscillating motion to the crank A throughthe link connection H. The construction is simple and, therefore, inexpensive. Thegears are of cast iron with lj£-in. faces, the large one havinga pitch diameter of 10J/2 in. and 106 teeth, the small one having apitch diameter of 4 in. and 40 teeth. The gear shafts are % , and run in small cast iron boxes, reclaimed fromscrap and babbitted. The crank arm is made from a straight barof merchant iron ¥% in. by 1^2 in., upset on one end for the shaftfit. A number of 9/16-in. holes drilled 1 in. apart permit the ad-justmen
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
