. The Street railway journal . ssure or by theforward or backward direction of the radial arms. Theneeded length of the radial arms depends on the kind ofsuspension of the contact wire, on the size of wire and onthe train speed. The illustration shows a bow calculated for a 600-B andS-gage wire hung by the saddle suspension with 220 and 4 ft. maximum vertical deflection, with a maxi-mum train speed of 50 m. p. h. By using smaller deflec-tions of the wire with 200 ft. spans and shorter sliding bowsspeeds of 80 m. p. h. can be provided for A WEED BURNER BY C. L. GREERThe Northern Texas
. The Street railway journal . ssure or by theforward or backward direction of the radial arms. Theneeded length of the radial arms depends on the kind ofsuspension of the contact wire, on the size of wire and onthe train speed. The illustration shows a bow calculated for a 600-B andS-gage wire hung by the saddle suspension with 220 and 4 ft. maximum vertical deflection, with a maxi-mum train speed of 50 m. p. h. By using smaller deflec-tions of the wire with 200 ft. spans and shorter sliding bowsspeeds of 80 m. p. h. can be provided for A WEED BURNER BY C. L. GREERThe Northern Texas Traction Company operates an in-terurban line thirty-five miles in length between Fort Worthand Dallas, in the State of Texas. Much of the countrytraversed has a heavy growth of weeds and grass, necessi-tating the expenditure of considerable labor to keep thetrack clean. For almost the entire distance the track andright of way is covered by a grass, known locally as John-son grass. This grass is very tenacious and is kept down. SIDE VIEW OF WEED BURNERonly with great difficulty. As the roadbed is of crushedrock for most of the distance it was practically impossibleto remove the weeds by cutting them off at the surface ofthe earth. After vainly trying other methods of overcom-ing the trouble the company constructed the weed burnershown in the accompanying engravings. The burner ismounted on a flat car and is slowly run over the track,while the flames from the burners destroy the vegetationbelow. The oil for the burners is common crude fuel oil. NOVEMEER 9, I907.] STREET RAILWAY JOURNAL. 953 2, that the oil pipe The outfit consists of a motor-driven air compressor, twoair reservoirs, three oil reservoirs and four burners, to-gether with the necessary valves and fittings. There aretwo air pipes, one to put pressure on the oil in the oilreservoirs and the other to furnish a jet of air to breakthe oil into a spray at the burners. It will be noticed from the plan, each oil r
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
