Safety device for scaffoldings

Details Safety device for scaffoldings Safety device for scaffoldings

1981-05-22

1983-02-08

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Ladder and platform

Platform with ladder as support

182179, 182222, E04G 508, E04G 728

Patent

active

043724248

ABSTRACT:
In a scaffolding assembled of vertical posts, trough-shaped crossbars secured to the posts and gangplanks hooked on the edges of crossbars by claws, a safety device for securing the gangplanks against accidental lifting includes oblong holes formed in the bottom of the trough-shaped crossbars, a rail arranged above each crossbar and overlapping the claws, each rail being provided with a downwardly directed projection formed at its end with a bent portion insertable into the holes and engageable with the crossbar, and a locking plate hinged to the end of the rail which is situated away from the direction of bending of the hook-shaped portions.

REFERENCES:
patent: 2101245 (1937-12-01), De Franco
patent: 2430642 (1947-11-01), Mahaffey
patent: 2619390 (1952-11-01), Johnson
patent: 2656224 (1953-10-01), Gray
patent: 3213964 (1965-10-01), Tucker
patent: 3305046 (1967-02-01), Schar
patent: 3306397 (1967-02-01), Brumenshenkel
patent: 3854552 (1974-12-01), Kensrue
patent: 4340130 (1982-07-01), Payne

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