. Air brakes, an up-to-date treatise on the Westinghouse air brake as designed for passenger and freight service and for electric cars . TF = F = :^z^; l=a-\-b. FX a b Wx b aW X b F F X a Wx Ia = ;:^— ; or, a = ^ ^nr^ °^ F + W* Fx IF+W FULCRUM BETWEEN APPLIED AND DELIVERED FORCES. TF = F X a ^ - ; a = b + d: a ^ Wxb Wxda = —=— ; or, a ^ —_ F W- F W W-F DELIVERED FORCE BETWEEN FULCRUM AND APPLIED FORCE

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Keywords: ., bo, bookcentury1900, bookdecade1910, bookidairbrakesuptodat00ludy