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Show AltBmke Palent, The follow ing descrlpllon of tin '.ir-brake '.ir-brake rwenl'y palenteil by (ieorg" V. Edgiugton ol this city, appeared in last week's bcleutlllc American ; In the train-pipe an air-dl .1 n-ge valve, normally cloaeil, It eriartd. A cam-liver is pivoted at one end. and is adapted to engage the valve b opn it when moveil Irom its normal position, A Axed arm Is losely connected with the cam lever. When the truck runt off the rails and assumes au angular pwl-tlon pwl-tlon relatively to the ear-body, then the fixed arm Imparts a swinging motion to the din-lever, so that the ram end lifts tha valve olT Its seat and opens the iiir-dlscharge iiir-dlscharge valve 10 tha outer air, and thereby allows the escape of air f train-pipe. The braket aro then se- n the usual manner and tha derallod ,'ir brought to a standstill. |