car shaker

car shaker

[′kär ‚shāk·ər]
(mechanical engineering)
A device consisting of a heavy yoke on an open-top car's sides that actively vibrates and rapidly discharges a load, such as coal, gravel, or sand, when an unbalanced pulley attached to the yoke is rotated fast.
References in periodicals archive ?
One of the car shakers said to me that he did not think that the driver had been very keen on hunting.