Fire escape – ladder – or scaffold – Platform with elevating or lowering means – Suspended
Patent
1983-01-31
1985-01-29
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Platform with elevating or lowering means
Suspended
182150, 248237, E04G 310
Patent
active
044960271
ABSTRACT:
A portable motor outrigger for suspending scaffolding in which there are a pair of spaced generally parallel, substantially A-frame-shaped supports (30, 32), having a beam (26) extending therebetween. Each A-frame has two plates (100, 108), one adjacent the lower end of one leg (76) and the other adjacent the lower end of the other leg (78). The plates are adapted to be positioned on a surface (12) to support the beam (26) through the A-frame supports. A wheel (104) is mounted for rotation in a lower part of the A-frame and is positioned to be substantially in vertical alignment with the center of gravity of the weight on the support. A caster (98) depends from an end (86) of each A-frame, the wheel and caster being above a roof surface when the plates (100, 108) support the A-frames on the roof surface. A jackscrew (92) is mounted on one end of each A-frame adjacent the caster and is adapted to raise and lower plate (100) adjacent the caster with respect to the A-frame and the caster. When the jackscrew is rotated to move the plate on its end toward the A-frame, the wheel and caster are lowered toward the roof surface. When the caster touches the roof surface and the plate (100) is lifted from the roof surface, the A-frame tilts so that the plate (108) is raised and so that the A-frames with the caster and wheel on the roof surface can be moved by exerting a horizontal force on the beam and can be rotated around a building corner by exerting horizontal forces on the beam at the end of adjacent the corner.
The method for positioning a mobile scaffold suspending outrigger for horizontal movement, including rotation by a single person.
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Barnard Delbert J.
Machado Reinaldo P.
Spider Staging, Inc.
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