Work platform for buildings

Details Work platform for buildings Work platform for buildings

1982-03-10

1984-08-28

Machado, R. P.

Fire escape, ladder, or scaffold

Automatic control

182113, 182142, E04G 310, E04G 316

Patent

active

044678886

ABSTRACT:
A work platform for buildings having a guard rail having, at one end, a movable part pivotally mounted for movement about a horizontal axis between a working position and an upright safety position the guard rail including a mechanism carrying switch means arranged in the working position of the said movable part to be positioned to contact a member on an adjacent platform to control a circuit to stop the platform moving in a vertical direction and the movable part being controlled by said mechanism which also positions said switch means to prevent the platform passing one another when the end frame movable part is in any position except the safety position.

REFERENCES:
patent: 494328 (1893-03-01), Ennis
patent: 1403420 (1922-01-01), Kohler
patent: 2433763 (1947-12-01), Kiesling
patent: 3837428 (1974-09-01), Gish
patent: 4018306 (1977-04-01), Lyons
patent: 4293054 (1981-10-01), Pieri

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