. Railway mechanical engineer . rods was 104 i-The roughing cut progressed at the rate of % in. per the finishing cut at the rate of IJ^ in. per min. In profiling circular surfaces of rod ends (Fig. 4), therods are drilled and mounted on mandrels centered on thetable and machined by the use of the rotary feed. The principal features of the construction of this machineare clearly indicated in the illustrations. In the interest ofrigidity and accuracy the longitudinal and cross feeds havebeen separated and both are guided directly on the table saddle is carried on 7-in. horizonta
. Railway mechanical engineer . rods was 104 i-The roughing cut progressed at the rate of % in. per the finishing cut at the rate of IJ^ in. per min. In profiling circular surfaces of rod ends (Fig. 4), therods are drilled and mounted on mandrels centered on thetable and machined by the use of the rotary feed. The principal features of the construction of this machineare clearly indicated in the illustrations. In the interest ofrigidity and accuracy the longitudinal and cross feeds havebeen separated and both are guided directly on the table saddle is carried on 7-in. horizontal bearing sur-faces with a spread of 40 in. over the shears. The alinementof the table is maintained by a single inside gib, and two clamps bearing on the under side of the ways are providedon each side. The table illustrated is 42 in. in diameterbut as the result of extensive service trials this diameter hasbeen increased to 54 in. The diameter of the table bearingon the saddle is equal to that of the table and is four inches. Fig. 3—Finishing Inside Surfaces of a Main Rod Strap wide radiall}-. A ring clamp, completely surrounding thetable and bearing in a recess in its edge, secures the tableto the saddle when the rotary feed is not in use, thus ineffect providing the rigidit}- of a one-piece casting for straightwork. The hole in the center of the table is bushed to pro-
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
