. Railway mechanical engineer . handles. He willlearn more kinks in the few days he is with a good instructor 210 RAILWAY MECHANICAL ENGINEER Vol. 91. No. 4 than he would learn in a year if he were turned loose to dothe best he knew how. Dont allow the tubes to extend -4 in. to one inch outsideof the front tube sheet. They are hard to roll and shim andare very inconvenient for the machinist wlien he is puttingin the steam pipes. The tulies should extend outside of thefront tube sheet for only about , 4 in. and when rolled aquick taper mandrel and pin should be used for all will give
. Railway mechanical engineer . handles. He willlearn more kinks in the few days he is with a good instructor 210 RAILWAY MECHANICAL ENGINEER Vol. 91. No. 4 than he would learn in a year if he were turned loose to dothe best he knew how. Dont allow the tubes to extend -4 in. to one inch outsideof the front tube sheet. They are hard to roll and shim andare very inconvenient for the machinist wlien he is puttingin the steam pipes. The tulies should extend outside of thefront tube sheet for only about , 4 in. and when rolled aquick taper mandrel and pin should be used for all will give better holdinc: power to the tube sheet and it EYE FORMING MACHINE BY J. H. CHANCY Foreman , Georgia Railroad, Augusta. Ga. The machine shown in the illustration is used for bendingeyes on brake hangers of various descriptions, rake handles,etc. It is made from bar iron and can be easily constructedin most an) shop. A brake cylinder is used to operate it, theair being taken from the shop line. A crosshead on the end. Machine for Forming Eyes on Rods will save Ijeading the tubes on the front tube sheet in highpressure boilers. The prosser is the liest tool to use when W(]rking old tubesin roundhouses. .\ tube mandrel can also be used. Thecalking should be done with a pneumatic hammer. Thebeading tools should not lie allowed to become flat. Theyshould be kept in good condition so that they will keep thebead raised up and compact. .-V roundhouse which has nopneumatic hammer for beading the tubes should be furnishedwith two prosser expanders, one for i-in. sheets and one for^-in. sheets as a good many tube sheets become worn anda prosser for yg-in. sheets is needed. A number of round-houses use the tube roller, but where this is used the tubesbecome weak after a short time and cause failures. When tubes are removed from a boiler 12 of the tube holesin the front tube sheet should be enlarged to 2 5/16 in. indiameter where 2-in. tubes are used. This would enalile theround
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
