Laboratory Jaw Crusher 911Metallurgist
The Case Laboratory Crusher (patented in 1903), Fig. 69, was especially designed to meet the demand for a low priced, strong, laboratory crusher. It can be driven by either hand or power, and will crush from 100 to 200 lbs. of ore per hour, depending, of course, on the hardness of the ore. The jaw opening is 2½ by 3 inches and it can be adjusted quickly from a fineness of ¼ inch to 20 mesh.