. Railway mechanical engineer . age tank similar to thosecommonly found in rural garages. A pneumatic fishing machinewas used with a special cord consisting of extra heavy fish addition to the ease of operation, this method had the advantagethat all dirt and foreign matter were blown out of the conduit. May, 1922 RAILWAY MECHANICAL ENGINEER 257 Spark Arresters for Smokeboxes of^^ ood-Burniiig Locomotives By Dr. Horatio Da Costa Superintendent of Motive Power, Mogyana Railway, Brazil r\UE to the limited supply of domestic coal and the high■■^ price of imported coal, the use of wood as a
. Railway mechanical engineer . age tank similar to thosecommonly found in rural garages. A pneumatic fishing machinewas used with a special cord consisting of extra heavy fish addition to the ease of operation, this method had the advantagethat all dirt and foreign matter were blown out of the conduit. May, 1922 RAILWAY MECHANICAL ENGINEER 257 Spark Arresters for Smokeboxes of^^ ood-Burniiig Locomotives By Dr. Horatio Da Costa Superintendent of Motive Power, Mogyana Railway, Brazil r\UE to the limited supply of domestic coal and the high■■^ price of imported coal, the use of wood as a fuel forlocomotives is still common on many railroads in Brazil andit will undoubtedly continue to be used extensiveh- for sometime to come. The design of a spark arrester which willprevent the escape of sparks and at the same time not inter-fere with the draft is, therefore, a question of considerableimportance. But little information being available, a study of thesubject of arresters to meet the conditions in Brazil was. A Satisfactory Design of Spark Arrester for Wood Burning Loco-motive with Low Exhaust Nozzle made a few years ago by Dr. Jayme de Castro Barbosa, thensuf)erintendent of motive power in the Rede Sul Mineira,and the results of the observations were embodied in a bookentitled, Spark Arresters for Steam Locomotives BurningWood, which was published in 1918. Since this date acareful investigation has been made on the Mogyana Rail-way of the results obtained from 28 types of spark arresterson as many designs of locomotives. These arresters werebuilt on the general principles advocated by Dr. Barbosa. The form was modified, however, so as to give a curvedsurface on the top side instead of a ilat surface as was usedon the Rede Sul jSIineira. Perforated metal sheets were found to give the best the several types tried, sheets meter ( in.)thick with round perforations meter ( in.)diameter and with openings equal to per cent o
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
