. Railway mechanical engineer . RAILWAY MECHANICAL ENGINEERI* Vol. 93, No. $. March, 1919 RAILWAY MECHANICAL ENGINEER 143 3 in. wide extending inward. These stiffeners are riveted tothe inner side of the center sill web plate and to the coverplate. The web plates are also reinforced between the bol-sters by vertical stiffeners of 4-in. by o-in. by ^-in. angles,which are spaced 3 ft. 6 in. apart and servealso as supports for the floor beams. Malleable iron cheekplates of the double pocket type are riveted inside the draftsills. The couplers have a 5-in. by 7-in. shank and 8j4-in.

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. Railway mechanical engineer . RAILWAY MECHANICAL ENGINEERI* Vol. 93, No. $. March, 1919 RAILWAY MECHANICAL ENGINEER 143 3 in. wide extending inward. These stiffeners are riveted tothe inner side of the center sill web plate and to the coverplate. The web plates are also reinforced between the bol-sters by vertical stiffeners of 4-in. by o-in. by ^-in. angles,which are spaced 3 ft. 6 in. apart and servealso as supports for the floor beams. Malleable iron cheekplates of the double pocket type are riveted inside the draftsills. The couplers have a 5-in. by 7-in. shank and A cast steel yoke having an ultimate strength of 4S0,-000 lb. is used. It is attached to Uie coupler by a key andis fitted with one M. C. B. class G draft spring and oneHarvey friction spring. The Carmei release rigging andImperial centering attachment are used. The body bolster is of a box section. The diaphragms areof j4-in. pressed steel plate with 3-in. flanges all around andare spaced 8 in. back to back. At die outer end of the dia-phragm there is a spacer made

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering