International Library of Technology · Scranton, International Textbook Co. · leaf 479
em to slide,the friction between the wheels and rails tries to make thewheels roll again. It is this friction that in the previousarticle was said to be 30 per cent, of the total weight of thecar. The total pressure to be applied to the brake shoesdepends on the leverage of the brake rigging, on… … 59. Fig. 59 shows a very common form of single-truckbrake rigging, most of the parts of which are designated in the figure. Brake beams B, Bare supported on the ends andslide in cast-iron pieces fixedto the side frames of the truck;they are called brake-beam cast-ings. Fig. 60 shows the…
Electrical engineering
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