. Electric railway journal . able amount of material required for replacement ofworn, broken or defective parts plus all operating sup-plies like tape, and inclusive of the terminal clocks,totaled only $1,116 in 1916, less than $1 per recorderper annum or less than 1/3 cent a day. Thus the totallabor and material cost of the coasting recorder is with-in 1 cent per diem per instrument. Power Shovel Equipped to Move Alongas It Digs Mounting its steam shovel on electrically chain-driven rollers is the scheme used by the Pittsburgh(Pa.) Railways to do away with moving-up delays inits powe
. Electric railway journal . able amount of material required for replacement ofworn, broken or defective parts plus all operating sup-plies like tape, and inclusive of the terminal clocks,totaled only $1,116 in 1916, less than $1 per recorderper annum or less than 1/3 cent a day. Thus the totallabor and material cost of the coasting recorder is with-in 1 cent per diem per instrument. Power Shovel Equipped to Move Alongas It Digs Mounting its steam shovel on electrically chain-driven rollers is the scheme used by the Pittsburgh(Pa.) Railways to do away with moving-up delays inits power-shovel track excavation. The illustrationsshow the shovel and its method of mounting. It isrun up onto twoshort sections ofrails, to which it issecurely locked. Therails are mounted ontwo long rollers, theends of which runon the pavement onone side and on atemporary rail onthe other. This tem-porary rail is laidupon the ends of theties of the adjacenttrack, which is leftin service whilework is being doneon the first PITTSBURGH RAILWAYS TRACK SHOVEL MOUNTED TO AUTO-MATICALLY MOVE UP AS THE WORK PROGRESSES—ENLARGEDVIEW SHOWING METHOD OF MOUNTING ONCHAIN-DRIVEN ROLLERS The rollers are turned by a chain drive so geared thatthe shovel moves ahead as fast as the digging pro-gresses. A capable operator will keep cleaned up as hegoes, and he always has a full bite ahead without hav-ing to 3top to move up. This equipment was developedunder the direction of J. M. Larned, engineer mainte-nance of way. Guard for Milling CuttersRecommended For guarding milling machine cutters the NationalSafety Council in a recently issued bulletin recom-mends a device such as shown in the drawing. This
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
