. Railway mechanical engineer . el Fuego, Chile. The frequency ofthe emanations of natural gas makes it proliable that the depositsare large.—The Engineer. Indian Manganese Ore.—The exports of manganese ore fromIndia in April this year were 16,269 gross tons, of which 12,969tons went to Great Britain and 3300 tons to France. In April,1914, the exports were 65,533 tons, making the decrease this year49,264 tons, or per cent. Since January 1, no ore has beensent from India to the United States.—The Engineer. BERDAN BRAKE RIGGING The illustrations show a new type of brake rigging inventedby E
. Railway mechanical engineer . el Fuego, Chile. The frequency ofthe emanations of natural gas makes it proliable that the depositsare large.—The Engineer. Indian Manganese Ore.—The exports of manganese ore fromIndia in April this year were 16,269 gross tons, of which 12,969tons went to Great Britain and 3300 tons to France. In April,1914, the exports were 65,533 tons, making the decrease this year49,264 tons, or per cent. Since January 1, no ore has beensent from India to the United States.—The Engineer. BERDAN BRAKE RIGGING The illustrations show a new type of brake rigging inventedby E. G. Berdan, stationmaster at the LaSalle Street Station,Chicago, of the New York Central Lines West. It is designedfor the purpose of eliminating the use of brake beams, shows the top view of the device as applied to one side of thetruck. Fig. 2 shows a half section through the gear and racksthat operate the shoes, and a section through the connection tothe brake rods. The pressure from the brake cylinder is trans-. Fig. 1—Top Vie Brake Rigging mitted through the regulation foundation gear to the brake rod,which is connected by means of a link to a crank on the gearshaft. As this shaft is turned the gear will rotate, driving thetop and bottom racks, to which the brakeshoes are attached, out-ward, forcing the brakeshoes against the wheel. The mechanismis supported on the truck spring plank, a special housing beingrequired to hold the gears and the rack. With the rack above
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
