. The Street railway journal . i-in. angles, 50 ins. long. The upper two legs on each side end. 38.—DIAMOND TROLLEY WHEN IN LOWERED POSITION in brass gears or lugs, which play into each other at the endsof the roller, and are bolted to special castings, to which arefastened the solid shaft of the roller. From the middle jointof the frame to the center of the top gear the distance is 54 ins. The bottom arms of the frame end in similar brass gears,that are fastened to two i^-in. shafts, 3 ft. 2 ins. long, spacedon 6-in. centers and supported at the ends in brass-bearingblocks. The center jo
. The Street railway journal . i-in. angles, 50 ins. long. The upper two legs on each side end. 38.—DIAMOND TROLLEY WHEN IN LOWERED POSITION in brass gears or lugs, which play into each other at the endsof the roller, and are bolted to special castings, to which arefastened the solid shaft of the roller. From the middle jointof the frame to the center of the top gear the distance is 54 ins. The bottom arms of the frame end in similar brass gears,that are fastened to two i^-in. shafts, 3 ft. 2 ins. long, spacedon 6-in. centers and supported at the ends in brass-bearingblocks. The center joints of the frame are formed by two%-in. cold-rolled rods, the fittings at the joints being of cross pieces of i-in. x 3-16-in. angle-iron serve as stiffen-ers for the four sides of the frame. The frame is 32 ins. wide. Considerable trouble was anticipated in designing a contact-shoe or roller which would have good wearing qualities, wouldnot heat at bearings and would be noiseless, but it is believedthe problem has been satisfactorily solved, as the roller in useseems to meet
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
