. Report of draft gear tests, United State Railroad administration, Inspection and test section; . TFme—Seconds Fig. 77a—Car-Movement Curves, Superimposed. National M-4 GearsThese Curves Drawn by Cars in Test 188 Draft Gear Tests of the U. S. Railroad Administration. &W (5

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Keywords: ., bookauthorunitedst, bookcentury1900, bookdecade1920, bookyear1921