| 摘要 |
5463 The extractor, consists of two halves connected by a joint (6), with each of the halves comprising a shaft (4) with a handle at one end and a rod (5) at the other end of the shaft. A cutting element (1) is secured to the inner side of the free end of the rod and comprises a semi-cylindrical part having two straight edges. One is parallel and the other inclined in relation to the rod, having two semi-circular sides. - The front one of which is located in a plane forming an acute angle with the rod, and that the obliquely inclined edges of the current elements co-operate when the tool is rotated against the ground to achieve a downward movement of the tool. The cutting elements together form a nip which is achieved by the handles being moved away from each other. The inner diameter of the cutting elements is less than the distance between the rods. |
