Fire escape – ladder – or scaffold – Self-sustaining
Patent
1978-09-06
1980-02-19
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Self-sustaining
182120, 182229, 182230, E04G 302, E04G 506
Patent
active
041890299
ABSTRACT:
A scaffold device has two leg members having at their upper end spacers to space the legs away from a wall or other structure. Each leg has a support assembly for a platform upon which a worker may stand. The support assemblies comprise a pair of sleeves which can be adjustably secured to the legs, and a pair of rods each having one end pivotally secured relative to their corresponding sleeves, with the other rod ends having lock holes to permit the rod ends to be secured at a position to support the platform level with the ground for safe operation. A cross rail connects each of the legs and acts to maintain the relative position of the legs and also acts as a safety device to prevent workers from falling off the scaffold. The legs, at their lower ends, have adjustable extendors which allow the overall height of the scaffold to be decreased and increased, and allows for one leg assembly to be of greater height than another assembly to accommodate different levels in terrain upon which the scaffold is mounted. The legs, extendors, and platform are made of rectangular supporting members such as wooden beams and can utilize two by four inch wood and two by eight inch wood, (5.08 cm.times. 10.16 cm and 5.08 cm.times.20.32 cm).
REFERENCES:
patent: 652010 (1900-06-01), Wheeler
patent: 921431 (1909-05-01), Miller
patent: 4078633 (1978-03-01), Fahy
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