| 摘要 |
<p>A raise and lower apparatus comprising a forward support assembly (10) and an aftward support assembly (12) to be arranged in aligned manner and interconnected adjacent their upper ends by a beam (22), the beam (22) being arranged to slidably support a carriage (50) arranged to be slidably moved from a first operative position adjacent the forward support assembly (10) to a second operative position adjacent the aftward support assembly (12), the apparatus being arranged to be, in use, secured to a fixture and the carriage (50) also being arranged to receive a rope to raise and lower an object.</p> |
