Abstract: A lever member is pivotable about a horizontal axis which is fixed to a frame defining a horizontal plane. A blade profiled to slide under a shingle is fixed to a front end of the lever member, and lifts the shingle when a rear end of the lever member pivots downward under action of a pneumatic cylinder. The cylinder is mounted horizontally toward the rear of the frame, oppositely from the front of the lever member. The cylinder pushes a transverse linkage member forward, which pulls on cables extending rearward from the linkage member thence upward around pulleys to the rear end of the lever member.