. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ffSw Bridge Repairs on the Duluth, South Shore & Atlantic Railway By J. G. KOPPEL, Electrical Superintendent of Bridges, Sault Ste. Marie, Ontario On the Duluth, South Shore & Atlantic essential to security. The nuts on the Railway draw-bridge at Soo, Michigan, spindle are of brass, and weigh about 55 the bridge being a relic of many years pounds each, and the cost of new nuts standing, but has given excellent service, would have been considerable, not speak- it was quite recently discovered,
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ffSw Bridge Repairs on the Duluth, South Shore & Atlantic Railway By J. G. KOPPEL, Electrical Superintendent of Bridges, Sault Ste. Marie, Ontario On the Duluth, South Shore & Atlantic essential to security. The nuts on the Railway draw-bridge at Soo, Michigan, spindle are of brass, and weigh about 55 the bridge being a relic of many years pounds each, and the cost of new nuts standing, but has given excellent service, would have been considerable, not speak- it was quite recently discovered, however, ing of the difficulty of making a perfect that the bridge showed a slight tilting on fit on the partially worn threads of the one side as trains were passing over, spindle. tapped and adjustable headed set screwswere inserted as shown. The job wascompleted in a very short time, and theresults are of >the most satisfactory This was more particularly observed on The accompanying drawing shows how the northern end where there is a slight the difficulty was overcome by reboring curve. and bushing the nuts with a sufficient de- On close investigation it was found gree of tightness, and after threading the that the foot-spindle nuts were badly nuts in order to perfectly secure them in worn, so much so that the threads did place against future tendency to loosen, not hold with that degree of tightness accommodation for two set screws were Need of Improvement inRoundhouses By WILLIAM McINTOSH \\ hile some recently built roundhousesshow improved facilities, the larger ma-jority throughout the country, especiallyin the East, are sadly deficient in modernconveniences, and in many instances areconspicuous by their absence. No doubtthere is more than one manager disap-pointed at the returns obtained from mod-ern roundhouses and large equipment, byits performance on the road and the timerequired to turn it into serv
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