Carriage

1. A term used with shaker conveyor supports. Carriages may be designated as ball-frame, wheel, or roller carriages, depending on their construction. The carriage may or may not be attached solidly to the conveyor troughs. See also: slope cage
2. See: cage
3. A sliding or rolling base or supporting frame. Nichols, 1

Source: Dictionary of Mining, Mineral, and Related Terms