| 摘要 |
An improved hand tool for rotating screws and other articles of like character which are designed to be turned or rotated in an infinitely fine or coarse rotation without disengaging or repositioning the grip of the driving tool. The tool includes an elongated driven member having a replaceable bit in the form of a screw driving member or the like at one end thereof. At the other end of the tool is a handle made up of a plurality of drive rolls each having one way clutch members engaging the driven member. One of the clutch members engages the driven member upon rotation in a clockwise direction and disengages when rotated in a counterclockwise direction. The other clutch member engages upon rotation in a counterclockwise direction and disengages when rotated in a clockwise direction. By positioning the handgrip on the drive rolls rotation may be provided to that clutch member for rotation and engagement of the driven member in a desired direction for very fine or alternatively coarse movement of the screws or other members of like character.
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