jigging-machine

from The Century Dictionary.

• noun A power-machine for jigging or dressing ores. See jig, transitive verb
• noun A machine-tool which has a vertically adjustable table that can also be moved laterally in two directions in a horizontal plane, and also a frame fitted with a vertical spindle adapted to carry either a drill or a cutting-tool, which latter can cut the edges of the work to a given outline or profile.