| 摘要 |
A wedge tensioning device for securing screen material to a screening system having a T-bolt with a threaded shank for receiving a nut threadably engaged therewith for adjustment toward and away from the frame. A pair of opposing wedges each having an elongated aperture through each wedge is provided. The T-bolt is passed through the elongated aperture of each wedge and is positioned between the frame and the nut. A spacer having an aperture therethrough is positioned between the wedges. The screen may be readily removed from the screening apparatus by driving the smaller end of one of the two wedges away from the bolt shank and out from its position to thereby loosen the tension on the screen material and permit it removal and replacement. To tension the screen material, the large end of one of the two wedges may be driven toward the shank of the bolt.
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