Tensioning assembly for vibratory screens
AssigneeProduction Engineered Products, Inc.
InventorRobert D. Nelson
Life of this patent
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Abstract
An improved classifying apparatus and assembly for the tensioning of vibratory screens includes a rigid frame, a pair of classifying screens in the frame and means for tensioning the screens. The improvement in the means for tensioning the screens includes a stationary anchor at one end of the screens and elongate rotatable elements adjacent the other ends of the screens. Levers are mounted to the ends of the rotatable elements outside of the frame and a tensioning cable extends between the levers. A tensioning member is positioned in the cable which, when adjusted, rotates the rotatable elements to simultaneously and uniformly adjust the tension on the screens.
Claims7
In a classifying apparatus including a rigid frame, at least a pair of classifying screens in the frame positioned such that overs from one to said screens travels from that screen to the other of the screens, and means for tensioning the screens, wherein the improvement in the means for tensioning the screens comprises:
- means for stationarily anchoring one end of each of said screens;
- elongate rotatable means, one for each of said screens, adjacent the other end of each of said screens and extending across the width of the screens and said frame, each of said rotatable means including engaging means for engaging the other end of each of the screens substantially across the width of the screens;
- mounting means for mounting said rotatble means for rotation relative to the frame;
- and
- means for simultaneously rotating said rotatable means in the same direction as each other for simultaneously drawing a tension on each of said screens when said screens are anchored at one end and engaged at their other end by said engaging means, said means for rotating being connected to each of said rotatable means such that the means for rotating, when tensioned, simultaneously rotates said rotatable means in the same direction as each other.
Dependencies are inferred from the claim text.