Abstract: A material processing plant comprising a frame and a body of a material processing apparatus connected to the frame and a feeder, and first joining means having a first support arm having a first pivot point and a second pivot point at a first distance from each other. The first pivot point is connected to a first end of the feeder and the second pivot point is connected to the frame of the processing plant for moving the first end of the feeder. The processing plant includes second joining means having a second support arm having a third pivot point and a fourth pivot point a second distance from each other. The third pivot point is connected to a second end of the feeder. The fourth pivot point is connected to the body of the processing apparatus. An actuator moves the feeder between a first position and a second position.