Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. . he truss rods pass. The needle-beams transmit the supporting force of the truss rods to the sillsand prevent the latter from sagging in the middle. Turn-bucklesare provided at the middle of each truss rod to permit an Increaseof tension and to correspondingly increase the supporting force
Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. . he truss rods pass. The needle-beams transmit the supporting force of the truss rods to the sillsand prevent the latter from sagging in the middle. Turn-bucklesare provided at the middle of each truss rod to permit an Increaseof tension and to correspondingly increase the supporting force. il03 8 ELECTRIC RAILWAYS In addition to the underneath truss rods, inside truss rods areusually mortised into the side posts and are covered up by thesheathing. The inside truss rods, which are placed as high on theposts as the window framing wall permit, pass from end sill to endsill. These rods support the ends of the floor framing, whereasthe underneath rods support the middle. The floor framing is covered with a double floor, usually ofquarter-sawed yellow pine, the lower thickness being laid crosswiseof the car, and the upper thickness, lengthwise. The two thick-nesses are separated by roofing felt. The floor boards are thoroughlypainted all over. In the floor, trap-doors are provided, over the. Fig. 5. Side View of Car Framing motors, so that they can readily be reached from the inside forinspection and adjustment of brushes. Exercise. The student should at this point, sketch from memory anunderframing plan, labeling each part carefully. Sides and Ends. The sides and ends of the car body are supportedby posts of tough ash. The form of the side post is shown at theleft in Fig. 3, and in section at the left in Fig. 2. In cars havingordinary single windows, all of the side posts are alike. In carswith Pullman windows, as in Fig. 2, alternate posts, which come inthe middle of the top sash, are made lighter and are cut away toclear the top sash on the inside. The corner post
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Keywords: ., bookauthoramericantechnicalsoci, bookcentury1900, bookdecade1910
