Abstract: Unfinished bricks are placed lengthwise on the inlet end of a first horizontal frame section, and are pushed one after another toward a discharge station at the opposite end of the section by a plurality of spaced flight bars, which are carried by an endless chain that travels beneath an elongate slot in the center of the first frame section. Four separate grinding operations are performed on each brick as it travels toward the discharge station. At the first station opposite sides of the brick are ground to provide the desired brick width; at the second station two parallel slots are ground in its bottom surface; at the third station a radius groove is cut in one side of each of the two bottom slots; and at the fourth station the top of the brick is ground or rounded off at each end.