Fire escape – ladder – or scaffold – Ladder with pivoted prop – Section extensible below prop pivot
Patent
1976-08-27
1978-04-04
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Ladder with pivoted prop
Section extensible below prop pivot
182178, 182228, E06C 122, E06C 708
Patent
active
040821625
ABSTRACT:
The invention is concerned with a combination comprising an A-frame ladder which comprises a pair of main side rails having parallel steps disposed therebetween, a pair of rear side rails pivotally secured with a top end thereof adjacent a top end of the main side rails, a platform secured atop said main and rear side rails and means for fastening the rear side rails at a fixed angle from the main side rails. The combination further includes an attachment extending the length of the main side rails equally so that the ladder can be stably positioned on stairs or the like. The attachment comprises a pair of equal length extender rails along with means for attaching the extender rails, each adjacent a top end thereof, each adjacent a bottom end of a respective one of said main side rails to extend longitudinally therefrom. The attachment further includes telescoping step means below the bottom ends of the main side rails parallel to the steps and extending telescopically from a respective one to a respective other of the extender rails intermediate the bottom end of each of the main side rail and a bottom end of each respective one of the extender rails.
REFERENCES:
patent: 598100 (1898-02-01), Kaganovsky
patent: 1013515 (1912-01-01), Reed
patent: 1116073 (1914-11-01), Anderson
patent: 3213963 (1965-10-01), Vogt
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