| 摘要 |
A pair of holding arms which can be installed quickly and used to press a workpiece in a safe manner against a guide fence, regardless of the cuts made upon it, when the workpiece is moved past a shaper or the like having cutter blades rotatably mounted on a stationary shaft. Each holding arm includes a rubber-faced roller, an elongated, solid rod of angular transverse cross-section, and a track-mounted post for supporting the rod in a horizontal position. Contact between the workpiece and the holding arm is made through the roller which is vertically mounted on one end of the rod. The post includes a clutch plate for locking the horizontal extension of the rod. Each roller can be quickly moved forward into contact with the workpiece without releasing the clutch plate. To move the roller backward-away from the workpiece, the user releases the clutch plate with one hand and pulls backward on the rod with the other. The roller is mounted on a shaft which is spring-loaded in such a way that the roller, when positioned contiguous with the workpiece, is constantly pushed against it. In addition, each post includes a foot which is mounted on a track disposed parallel to the guide fence so that the spacing between each holding arm and the cutter blades can be adjusted.
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