. Electric railway journal . of Suspending Trolley Guard overs intersecting steam and electric lines to replace thepole automatically should it leave the wire at these danger-ous locations. Even if the pole is held down because therope is caught, it is only necessary to release the rope andthe automatic guard will replace the pole immediately. Thisguard also finds effective use on railways operating throughtunnels, under grade crossings, bridges, dark sheds or atany other point where it would be difficult to replace thepole on account of darkness or other hindrances. The simple construction an
. Electric railway journal . of Suspending Trolley Guard overs intersecting steam and electric lines to replace thepole automatically should it leave the wire at these danger-ous locations. Even if the pole is held down because therope is caught, it is only necessary to release the rope andthe automatic guard will replace the pole immediately. Thisguard also finds effective use on railways operating throughtunnels, under grade crossings, bridges, dark sheds or atany other point where it would be difficult to replace thepole on account of darkness or other hindrances. The simple construction and application of this deviceappears from the illustration. The guard consists princi-pally of two aluminum-coated steel sheets which are heldin place by pressed-steel yokes or hangers. These hangersare adaptable to any standard type of trolley car. It has noprojections or obstructions to hinder the trolley , it allows a free vent for gases from passinglocomotives and eliminates the possibility of choking up. Trolley Guard in Operation from any combination of ice. dirt or soot. The metals usedin this guard are impervious to the action of the elements. TWO-BLADED RAIL SCRAPER In 1905 P. J. Pringle, now engineer and manager of theBallarat (Australia) & Bendigo Tramways, designed a railscraper with independent parts for cleaning the head andgroove. Experience with the original design has led themanufacturer, the Consolidated Accessories Company, Lon-don, E. C. to add such improvements as screws to raiseand lower the blades, one pair of springs to hold the bladesdown to the rail, a second pair of springs to absorb shocksand finally to use manganese steel for the groove blades. A side view of this scraper, now known as the Q-Fel,is presented in the accompanyingillustration. The scraper has abracket by means of which it isattached under the side of the carbetween the wheels with amplespace for side movement. Thevertical position of the scrapersshould be adjusted so th
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