Jaw crusher

A jaw crusher for breaking a non-rigid object comprising:

• a body;
• a fixed tooth plate which is secured to said body;
• a movable tooth plate which is swingably provided at an acute angle to said fixed tooth plate to provide therebetween a crushing space for crushing said non-rigid object;
• a swing jaw to which said movable tooth plate is secured;
• a driving mechanism for swinging said swing jaw;
• a motor for driving said driving mechanism;
• first projections provided on one of said fixed and movable tooth plates, each first projection being at a constant pitch and having a constant height, first projection root portions being formed between adjacent first projections;
• cutting projections provided on the other of said fixed and movable tooth plates, each cutting projection having a constant pitch and a constant height and projecting towards a respective first projection root portion, said cutting projections for bending and cutting said non-rigid object placed between said fixed and movable plates, wherein each of said cutting projections comprises a top portion formed as an acute angle at the top of each cutting projection;
• first crushing projections, each of which is provided substantially in the middle between each pair of adjacent cutting projections, said first crushing projections being lower in height than said cutting projections.
• second crushing projections provided on said fixed and movable tooth plates at each end thereof with respective top portions facing each other, said second crushing projections having a height greater than said first crushing projections but less than said cutting projections;
• and
• vertical surfaces formed and said second crushing projections at one end thereof, said vertical surfaces extending parallel to the direction of swing of said movable tooth plate.