The portable or movable apparatus and machinery of a railroad, particularly such as moves on the road, viz., engines, cars, tenders, coaches, and trucks. See Beardsley v. Ontario Bank, 31 Barb. (N. Y.) 635; Ohio & M. R. Co. v. Weber, 96 111. 448; Pittsburgh, etc., R. Co. v. Backus, 154 U. S. 421, 14 Sup. Ct 1114, 38 L. Ed. 1031. Rolling stock protection act. The act of 35 & 36 Vict. c. 50, passed to protect the rolling stock of railways from distress or sale in certain cases.