. Railway master mechanic . o in. of wearing face in the beginning whichwill increase in width to 3^. in. when the bottom of theclearance space ?i is reached, giving an area of 22>o in. Thewear of this type of inner coupler faces has proved thefact that, in passenger service operating under the com-.

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Keywords: ., bookcentury1800, bookdecade1870, bookidr, booksubjectrailroadcars