Jawtype rock crusher with toggle plate tension
· We claim: 1. A jaw rock crusher comprising: a first jaw; a pitman; an eccentric shaft coupled to said pitman; a toggle plate disposed adjacent said pitman on an opposite side from said first jaw; a means for adjusting a location of said pitman so as to control a maximum size of material which is permitted to pass between said fixed jaw and said pitman; a spring tension rod comprising a spring