| 摘要 |
<p>This invention is related to hand tools such as garden pruners, lawn-edge trimmers, scissors and the like. The tool comprises two members and two handles connected to these members and movable to move the members relatively to one another. A manually-operable catch having a shank mounted for rotation in one of said members includes a detent rotatable by the catch into and out of a position in which it prevents or restricts relative movement between the members. The shank is received in an aperture of said one member which is so shaped relative to the shank that over a predetermined range of rotation of the catch away from the position in which the shank was inserted into the aperture, the shank is prevented from withdrawal from the aperture. The one member is so shaped that it permits the detent to be fitted to or removed from the shank only when the catch is within said range of rotation and, after fitment of the detent, it restricts rotation of the catch to said predetermined range.</p> |
