joggling-machine

Century Dictionary and Cyclopedia

1. n. A power machine for making a joggled edge on a steel plate. (See joggle, n., 5.) It consists of two massive rollers, one above the other, on parallel axes. Each roller has two diameters, the large part of the top roller being over the small part of the bottom roller, and vice versa. The rollers being suitably adjusted, the edge of the plate is passed between them, thus pressing a joggle into the edge as the plate is rolled through.