. American engineer and railroad journal . FIG. 3- where the flow is being measured. The movement of this springactuates a small correction counterweight and permits an accu-rate record being obtained for any rate of flow under varyingpressure. An instrument which will indicate, but not graphically record,the rate of flow of steam or air is shown in Fig. 4. This in-strument is arranged on the principle of a float on the surfaceof the mercury in a U shape tube, which actuates a pulley thatin turn moves a small U magnet. This magnet affects an indi-cating needle mounted in a separate cylindrical
. American engineer and railroad journal . FIG. 3- where the flow is being measured. The movement of this springactuates a small correction counterweight and permits an accu-rate record being obtained for any rate of flow under varyingpressure. An instrument which will indicate, but not graphically record,the rate of flow of steam or air is shown in Fig. 4. This in-strument is arranged on the principle of a float on the surfaceof the mercury in a U shape tube, which actuates a pulley thatin turn moves a small U magnet. This magnet affects an indi-cating needle mounted in a separate cylindrical casing and reg-isters on a calibrated dial, as shown in the illustration. These instruments, since their introduction a short time Ffc. 4. have proven to be of great value not only for test work, but forkeeping a close watch on the daily operation of various machinesand the immediate determination of any unusual condition thatmight lower the efficiency. The General Electric Co., Schenec-tady, N. Y., is issuing a very fully illustrated catalogue thatgives the sizes suited to different conditions. Traffic Through the Soo Canals.—There were a total of3,242 vessels passing through the U. S. and Canadian canals atSault Ste. Marie in July, 1910. These vessels carried a total ofnearly ten million tons of freight. Of this seven and a half mil-lion was east bound and two and a half million west bound. September, 1910. AMERICAN ENGINEER AND RAILROAD JOURNAL 379 MEN WANTED. PuBLiciTV RFanagkr.—Mail capable of Iiaiidliiig tlie prepara-tion of catalogs anil bulletins antl special liliratiire for a railwaysupply company, .\ddress A. IF. A. M. Flannagan has been appointed master mechanic of theRichmond division of the Chesa
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
