Tripper Conveyor:
A tripper conveyor is a form of conveyor belt used in construction, mining, and other large-scale earth-moving businesses. They are also known as tiered or stepped conveyers, and the term "tripper" is a colloquialism that formed after they came into widespread use. This particular type of conveyor was designed to ferry debris, earth, rocks, etc, uphill. In order to keep these materials from sliding back down the conveyor, tall ridges or flaps were affixed laterally to the face of the conveyor belts.