| 摘要 |
PURPOSE: An improvement whetstone strut is provided to have a helix in a leg shaft combined with a side plate, and to control a forward/backward angle of a whetstone by controlling the length of a leg by screwing an auxiliary leg where a nut and a female screw are inserted. CONSTITUTION: An improvement whetstone strut comprises a stone part (10) and an auxiliary leg (20). The stone part is equipped in an edge part of the top and bottom of a connection plate and an edge part of the top and bottom of a side plate having a whetstone strut. The auxiliary leg is provided to a leg shaft equipped in the side plate. A spring supported by a hinge shaft includes twisted parts (30,30a) in the center, and supporting parts (31,31a) in both sides of the twisted parts. An inside supporting part (31) includes a connection part (32), and all are connected to the spring. |
