. Railway mechanical engineer . consumed each time an engine was fired investigation developed that within 20 ft. of the airvalve where house was connected, tliere was a live steamline and the cliange was made at once to tlie steam blower. Fretjuently air engines are emplo)cd to perform workwhich could lie acomplished from the shop line shaft. Allkinds of contrivances have been made from steam cylindersof 9^-in. Westinghouse pumps, consuming tliousands ofcubic feet of air a day at an enormous to the rail-road conipan\-. Electric motors, running warm, havi been found wi
. Railway mechanical engineer . consumed each time an engine was fired investigation developed that within 20 ft. of the airvalve where house was connected, tliere was a live steamline and the cliange was made at once to tlie steam blower. Fretjuently air engines are emplo)cd to perform workwhich could lie acomplished from the shop line shaft. Allkinds of contrivances have been made from steam cylindersof 9^-in. Westinghouse pumps, consuming tliousands ofcubic feet of air a day at an enormous to the rail-road conipan\-. Electric motors, running warm, havi been found with anair hose playing a constant jet of air on them to keepthem cool. Electric welded parts are sometimes cooled offwith air in order to machine them quickly. This is accom-plished but often at the exjjense of ineffective air tools, dueto decreased sho]) air pressure. It should also be rememljered that whenever the safetyvalve on an air receiver is heard lilowing, it means justso much nionev wasted. This is something which can. Fig. 3—Four Common Examples of Defective Air Hose be observed ilailv in nearly r\-iry raihoad sliop in thecountry, especially during the lunch hour. The use of ojjen air jets instead of vacuum cleaners forcleaning carpets and cushions in car )ards, air jets forblowing scale off hot iron which is being drawn out understeam hammers, air jets on emery wheels, etc., are all ex-[)ensive practices. .Air jets are not designed for cleaning theflfxjr or blowing dust off clothing. The use- nf ccunpressedair in furnaces and forges where a fan Mower ccmld lieutilized should not be tolerated. (hips are also often blown off machine loots using coni-l)ressed air. This practice shciiild be forbiddi 11 since il notonly wastes the air, but often blctws chi|i- inlo oil holes(ausinu bearings lo start cutting. i).\. Nose a Sour. >r (Hcal I, .A large pro|Mjrlion of llie waste of all in shops is usuallycaused by c arcIcsncSs on the part of ilic- workmen in makinghose
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
