This type of turntable is used as an alternative to the shunt-back or the traverser for changing the direction of mine cars or tubs, either on the surface or underground. A pulley driven by a creeper chain bringing along the cars is on the same vertical axis as the turntable and is so disposed that when a car is on the table two of its wheels rest on its central pulley while the other two rest on the outer edge of the turntable.