| 摘要 |
PURPOSE:To provide a centering pawl apparatus, which employs centering pawls formed respectively with a V-shaped recess, wherein each of said centering pawls is further formed with a subsidiary pawl, whereby it is enabled to grasp a round rod in a wide range of diameter. CONSTITUTION:Motor 2 is provided at one side of frame 1. Output shaft of this motor 2 is supported by bearing via coupling 3 and connected to left-handed screw shaft 5 and right-handed screw shaft 6 formed integrally with each other. Left- hand threaded nut 7 and right-hand threaded nut 8 are fitted respectively on these screw shafts 5 and 6, and pawls 9, 9A with a V-shaped recess are carried at one end of each nut 7, 8. Further, subsidiary pawls 19, 10A and cylinders 11, 11A are provided at the central portion of said pawls 9, 9A, respectively. |
