. Electric railway journal . ore adapted for all kinds of repairwork, which includes brazing, preheating in connection withelectric or oxy-acetylene welding, tempering, annealing, melting, 884 ELECTRIC RAILWAY JOURNAL. [Vol. XXXVII. No. 20. etc. Its usefulness in car repair work may be appreciated fromthe fact that the No. 2 burner, which has a 15-gal. tank andconsumes 3 gal. of oil and 15 cu. ft. of free air an hour, hasbent a y2-m. steel plate 6 ft. x 10 ft. to right angles in 15minutes. This meant the proper heating of an area 10 ft. x 8 a 10-lb. burner. The portable outfit illustra
. Electric railway journal . ore adapted for all kinds of repairwork, which includes brazing, preheating in connection withelectric or oxy-acetylene welding, tempering, annealing, melting, 884 ELECTRIC RAILWAY JOURNAL. [Vol. XXXVII. No. 20. etc. Its usefulness in car repair work may be appreciated fromthe fact that the No. 2 burner, which has a 15-gal. tank andconsumes 3 gal. of oil and 15 cu. ft. of free air an hour, hasbent a y2-m. steel plate 6 ft. x 10 ft. to right angles in 15minutes. This meant the proper heating of an area 10 ft. x 8 a 10-lb. burner. The portable outfit illustrated consists ofone seamless tank equipped with a hand air pump, two sets ofburners and hose attached to the tank and two adjustable standsto hold the burners in the proper position. FEATURES OF ELECTROLYTIC ARRESTERS Oil in the tanks of electrolytic lightning arresters is in con-tact with the electrolyte in the trays. Therefore, it soon be-comes wet—that is, it absorbs moisture from the electrolyte. OIL DUCT ALUMINUM TRAY,. Fig. 1—Section of Three Trays of Electrolytic Arrester It has been found that organic substances, such as wood orfiber, when used between electrolytic arrester trays, absorbmoisture from the wet oil and thereby become carbonize and difficulties ensue. To avoid trouble fromthis condition in Westinghouse electrolytic arresters, separatorsof porcelain are used between the trays. The wooden tie rodswhich bind the tray structure together are not in contact with
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