. American engineer and railroad journal . 6----^ Cross-Sections of Coal and Ore Car. girder constructed with 15-inch channels weighing 33 poundsper foot and 7-16 by 21 inch covering plates. The side sillsare of 15-inch I beams, weighing 50 pounds peT foot. The endsills are of special Z bars 2% and 3 by 5 inches by 9 feet 6inches. The dead blocks are secured to plates fastened to theends of the box girder. The end and intermediate bracing isclearly shown in the drawings. The body bolsters have % by10 inch bottom and top plates with a center web % inch thickand fastened together by 2% by % inch
. American engineer and railroad journal . 6----^ Cross-Sections of Coal and Ore Car. girder constructed with 15-inch channels weighing 33 poundsper foot and 7-16 by 21 inch covering plates. The side sillsare of 15-inch I beams, weighing 50 pounds peT foot. The endsills are of special Z bars 2% and 3 by 5 inches by 9 feet 6inches. The dead blocks are secured to plates fastened to theends of the box girder. The end and intermediate bracing isclearly shown in the drawings. The body bolsters have % by10 inch bottom and top plates with a center web % inch thickand fastened together by 2% by % inch angles, the form of thebolsters being shown in the half section on line A—B. Thisview also shows the connection between the box girder and the ttolsters, where it will be noticed that the cover plates extendover and under the twx girder, while the webs of the bolstersare riveted to the channels of the girder. The center castingsare of cast steel, riveted to the plates and channels of thegirder. The center plates are of malleable a. U ooo o00 The draft rigging has double helical springs with malleableiron lugs riveted to the channels, and the outer lugs, as seenin the sectional elevation at the left, form supports for 9 by 3-3 6 AMERICAN ENGINEER, CAR BUILDER 9%-inch oak blocks back of the dead blocks. The dead blocksare of cast steel. The body of the car is of wood, the siding and ends beingof 1% by 7 inch Georgia pine, placed inside of the posts andbraces. The sloping ends are lined with 2% inch oak. Theposts are 3 by 2% inch angles, weighing pounds per foot,the plates are 4 inch channels, 8 pounds per foot and thecounter braces are of 2% by 5 inch oak. The drop doors areof V* inch plate, reinforced with angles, the hinges being ofcast steel bolted to the underframe. The doors are supportedby 1%-inch crow foot rods, which secure the doors by beingturned so that the crow feet extend in a direction across thecar and take the weight on the rods. These rods are turne
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
