| 摘要 |
The improvement in portable scaffolding is disclosed comprising, in combination, a base, a pair of joined together uprights pivotally supported at opposite ends of the base, said uprights having a stowage position on the base in which they are horizontally disposed and a work position in which they are vertically disposed, means for holding said uprights vertically disposed in their work position, means including a different construction of one of the pair of uprights than the other pair of uprights for holding said uprights horizontally disposed in their stowage positions, each pair of uprights having no transverse bracing means therebetween above the upper halves thereof, said uprights also having no longitudinal bracing at the upper ends thereof so that said scaffolding provides unobstructed reaching space on all sides thereof between and above the tops of said uprights, said uprights having longitudinally spaced apart aperture means thereon for supporting work-upon means in vertically spaced horizontal work positions.
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