Flang′ing-machine′.
(Sheetmetal.) A machine usually having two rollers so constructed and arranged as to bend over the edge of a piece of tin-plate which is passed between them. The modes of bending are known as bending, burring, seaming, flanging, etc. In the example, the outer circumferential corner of the lower disk is turned out rectangularly, and the other disk has a peripheral flange, which enters the groove and forms an out-turned flange around the edge of the cylinder. See double-seaming machine.