Abstract: A machine for painting coding stripes on watch spring bars or other similar articles and which includes a rotary transporting structure preferably turning about a horizontal axis and mounted to receive the articles to be painted successively at an upper pick-up location and progressively advance the articles downwardly to a second location at which painting means form stripes on the articles, with ultimate delivery of the painted articles to a collection point, and with the transporting structure desirably including two wheels which are relatively axially adjustable to receive and hold articles of different lengths.