| 摘要 |
<p>The open shear-blades (7) of a shears-head (1) that is detachably mounted on a telescopically-extendable pole (3), are closed against the action of a spring (15) by downward pull on a tubular hand-grip (6). The hand-grip (6), which enables the pole (3) to be steadied using both hands, slides coaxially on the pole (3) and is coupled to the blades (7) via a line (16) which is secured frictionally to the hand-grip (6) by winding through notches (26, 27). A modified hand-grip (30) includes a mechanism (31) in which a spindle (32), guided by slots (35), lifts with tensioning of the line (16) to jam the line (16) within an upwardly-narrowing throat (33) for securing it to the hand-grip (30).</p> |
