| 摘要 |
<p>A scaffolding assembly (13) comprises, in this case, four uprights (14, 15, 16 and 17) spaced along the wall structure with each upright being about the same distance from the wall structure, each upright has a lower end on the ground and an upper end adjacent the roof (12). Building engagement means in the form of roof mounting brackets (18) extend from the building to each upright to hold the upper ends of the uprights in fixed space relation to the building, adjacent uprights have respective carriages (19, 20, 21 and 22) and hand winches (23, 24, 25 and 26) respectively for independently raising or lowering the carriage incrementally in turn in order to raise and lower platforms (28, 29 and 30). To this end the platforms are pivotally supported and extend toward the wall structure so that service personnel can raise and lower the platforms to work on the wall structure.</p> |
