Rock Crusher History - 911 MetallurgistApr 17, 2018 . History tells us, it was in 1830, the first US patent was issued on a rock crushing machine. It covered a device which, in a crude way,.rock crushing mechanism,Crusher - WikipediaA crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust. .. the other jaw called a swing jaw, moves back and forth relative to it, by a cam or pitman mechanism, acting like a class II lever or a nutcracker.
rock crushing mechanism