A bending machine for brass tubes consists of three small rollers, which work simultaneously and are adjustable; they are in the form of a triangle, as shown in the illustration. The tube is passed between the rollers and is bent round in a circular manner, and according to the adjustment of the rollers so is the radius of the circle altered. Each separate size of tube requires separate rollers. Very thin tubes will require first to be loaded with sand before passing them through the machine, otherwise the walls of the tubes will buckle and so spoil the work.

The same machine framing will take any number of different sized rollers.

Machine for Bending Brass Tubes.