Tension control apparatus for vibrating screens
AssigneeDeister Machine Co., Inc.
InventorsE. Mark Deister, Dale A. Loshe
Life of this patent
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Abstract
A vibrating screen apparatus includes a frame and a screen having a first end coupled to an anchor beam which is rigidly coupled to the frame. The apparatus also includes a tension control assembly coupled to a second end of the screen for tensioning the screen to substantially a predetermined tension. The tension control assembly is rotatably coupled to the frame spaced apart from the anchor beam. The tension control assembly changes the tension of the screen upon rotation of the tension control assembly relative to the frame about an axis of rotation. The apparatus further includes an adjusting mechanism for moving the tension plate in a direction normal to the axis of rotation of the tension plate to compensate for nonuniform tension of the screen.
Claims24
A vibrating screen apparatus comprising:
- a frame;
- a screen including a first end, a second end, and a width dimension;
- an anchor beam rigidly coupled to the frame;
- means for coupling the first end of the screen to the anchor beam;
- means for tensioning the screen to substantially a predetermined tension, the tensioning means being rotatably coupled to the frame and spaced apart from the anchor beam to change the tension of the screen upon rotation of the tensioning means relative to the frame;
- means for coupling the second end of the screen to the tensioning means;
- and
- means for selectively and incrementally adjusting the relative rigidity of the tensioning means at predetermined intervals along the width dimension of the second end of the screen to compensate for nonuniform tension of the screen.
A vibrating screen apparatus comprising:
- a frame;
- a screen including a first end and a second end;
- an anchor beam rigidly coupled to the frame;
- means for coupling the first end of the screen to the anchor beam;
- a tension plate rotatably coupled to the frame spaced apart from the anchor beam;
- means for coupling the second end of the screen to the tension plate;
- means for rotating the tension plate about an axis of rotation to move the second end of the screen relative to the frame to adjust the tension of the screen;
- and
- means for moving the tension plate in a direction normal to the axis of rotation of the tension plate to compensate for nonuniform tension of the screen, the moving means being coupled to the tension plate.
Dependencies are inferred from the claim text.