Device for preventing access to ladders

Details Device for preventing access to ladders Device for preventing access to ladders

1986-07-07

1987-05-12

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Door and ladder

182106, 182128, 182116, E06C 902

Patent

active

046642250

ABSTRACT:
A panel (6) has a flap (9) for closing a person-passing opening (4') (e.g. leading into a ladder cage (4)) and is pivotally mounted to one of the risers of the ladder (1). A locking element (10) having a padlock-receiving hole (12) is pivotally mounted on the other riser (2) and is connected by a first link (14) to an intermediate lever (16) having a finger (23) for holding the panel (6) in its closed position, said intermediate lever being operable from inside the cage (24) by means of an operating lever (21).

REFERENCES:
patent: 2535544 (1950-12-01), McKinley
patent: 3038555 (1962-06-01), Da Lee
patent: 3044572 (1962-07-01), Thomas
patent: 3225863 (1965-12-01), Ludlow
patent: 3968857 (1976-07-01), Bryan
patent: 4524848 (1985-06-01), Russo

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