New York [etc.] Simmons-Boardman Pub. Co. [etc.] · leaf 149
thus constructed, as theknuckle faces shown in Fig. 6 are worn down to the pointof condemDation and yet have sufficient lap upon the guardarm to prevent them from becoming uncoupled upon astraight track, while it is impossible upon curve Work. We will now consider the cylindrical faces for wear,…
Railroads · Railroad cars
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