>>1248323Here we go.
http://www.catskillarchive.com/rrextra/blwmal00.Html The second locomotive has an articulated boiler, with each section rigidly mounted on its respective frames: The flexible joint consists of fifty rings of high carbon steel, which are ten inches wide and formed with a slight set, so that when placed adjacent to one another they form a series of V-shaped joints. The rings have an outside diameter of seventy-five and one-half inches. They are riveted together at their inner and outer edges, and form a bellow’s-shaped structure which is forty-four and three-quarters inches in length. This is bolted into place between the front and rear boiler sections. An internal flue, forty-four inches in diameter, traverses the flexible connection, and is flared out at the back to fit into the rear boiler section. This flue prevents ashes and cinders from lodging in the flexible joints.
