Adjustable scaffold

Details Adjustable scaffold Adjustable scaffold

1979-11-26

1981-04-21

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Self-sustaining

182119, E04G 118, E04G 128

Patent

active

042627745

ABSTRACT:
A scaffold construction includes a fixed leg portion and an adjustable platform portion with a spring loaded pin connection operatively connecting between the two to selectively lock the leg and the platform in the required relationship. The pin is mounted on one end of a leaf spring which in turn is secured to the platform and engages any one of a plurality of apertures in the leg portion. A gravity operated locking device normally prevents inadvertent disengagement of the pin from the leg unless it is moved upwardly manually thus preventing accidental and inadvertent collapse of the platform relative to the leg.

REFERENCES:
patent: 601546 (1898-03-01), Boothman
patent: 1094332 (1914-04-01), Hubbard
patent: 1499300 (1924-06-01), Hayes
patent: 2172761 (1939-09-01), Curtis
patent: 2538435 (1951-01-01), Wegner
patent: 2593122 (1952-04-01), Droeger
patent: 2974965 (1961-03-01), Welles
patent: 3273720 (1966-09-01), Seiz
patent: 3396817 (1968-08-01), Perry

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