Patent ID: 7942356

Claim:
A horizontal shaft impact crusher, comprising: a crusher housing having an inlet for material to be crushed and an outlet for material that has been crushed; an impeller being mounted on a horizontal shaft in the crusher housing and being operative for rotating around a horizontal axis; a first curtain against which material accelerated by the impeller may be crushed; and a second curtain against which material accelerated by the impeller may be crushed, the second curtain being located downstream of the first curtain, as seen from said inlet to said outlet; wherein the crusher housing being provided with at least a first pivot point and a second pivot point for mounting a first end of the first curtain in two different positions relative to the impeller, a first adjustment device for mounting a second end of said first curtain, at least a third pivot point and a fourth pivot point for mounting a first end of the second curtain in two different positions relative to the impeller, and a second adjustment device for mounting a second end of said second curtain.