. Revised and enlarged ed. of the science of railways . TO r/!/r/A/ L/N£. ^OLO/Z^O ^/f/>/f£<5 /^///./£0 , TO /9r/^oSPH£^£- TO /V/7//V /t£S£/fi0/^. P; I i rl I TO r/f/f/f^ L/NC 7jR/j/^ l/^£ Open to /^rnojppfPfTHE T/f/?££ W/fy COCA. the connecting link between the train line andthe atmosphere for setting the brakes, or be-tween the main reservoir and the train linefor releasing, but it cannot connect the three THE AIR BRAKE. 349 simultaneously. The first engineers valve usedwas the three-way cock. Figs. Fy G and H clearly illustrate the threepositions of a three-way cock. Tlie outside
. Revised and enlarged ed. of the science of railways . TO r/!/r/A/ L/N£. ^OLO/Z^O ^/f/>/f£<5 /^///./£0 , TO /9r/^oSPH£^£- TO /V/7//V /t£S£/fi0/^. P; I i rl I TO r/f/f/f^ L/NC 7jR/j/^ l/^£ Open to /^rnojppfPfTHE T/f/?££ W/fy COCA. the connecting link between the train line andthe atmosphere for setting the brakes, or be-tween the main reservoir and the train linefor releasing, but it cannot connect the three THE AIR BRAKE. 349 simultaneously. The first engineers valve usedwas the three-way cock. Figs. Fy G and H clearly illustrate the threepositions of a three-way cock. Tlie outside rep-resents the body of the valve and the inside circlethe plug that can be turned one-fourth wayaround by the handle, bringing the necessaryports into communication (Figs. F and H) orclosing everything (Fig. G). Fjai.
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Keywords: ., bookcentury1800, bookdecade1800, bookidsciencerailw, bookyear1800
