Fire escape – ladder – or scaffold – Ladder and platform – Platform with ladder as support
Patent
1981-06-26
1984-04-03
Machado, R. P.
Fire escape, ladder, or scaffold
Ladder and platform
Platform with ladder as support
182214, 182107, 248238, E06C 716, E06C 748
Patent
active
044402635
ABSTRACT:
A ladder attachment includes a telescopic cross-bar 1A, 2A the ends of which carry wheels 3A for engaging a wall on either side of the ladder. This provides stability and also sets the ladder back from the wall.
The center portion 1A of the cross-bar has a pair of hooks 4A which hook over a rung 5A of the ladder and a pair of turnbuckles 9 which hook under a lower rung 12 (after which the turnbuckles 9 are tightened to secure the fixing). The turnbuckles are attached to a sleeve 10 carried by the bar 1A and have hooks 11.
A platform assembly 30 can also be mounted on the ladder and connected to the ladder attachment by support struts. The platform assembly includes a support framework 32 in which slots 33 are provided to overlie two rungs 34 and a turnbuckle 35 tightens the framework against the ladder.
The ladder attachment can carry a pulley by which goods can be hoisted to the person working on the ladder.
The ladder attachment provides stability to the ladder and the platform, if used enables a greater area to be made available to the person on the ladder.
A spacer (50-55) device can be temporarily mounted at the top of the ladder to space it from a wall and permit fitment of the ladder attachment to the ladder.
REFERENCES:
patent: 1645879 (1927-10-01), Skeels
patent: 3072218 (1963-01-01), Peters
patent: 3318416 (1967-05-01), Robinson
patent: 3773143 (1973-11-01), Del Prete et al.
patent: 4359138 (1982-11-01), Kummerlin
Kice Warren B.
Machado R. P.
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