Fire escape – ladder – or scaffold – Plural platforms – common support – Stepped
Patent
1979-07-13
1981-04-21
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Plural platforms, common support
Stepped
182145, 182178, 187 9R, E04G 118
Patent
active
042627737
ABSTRACT:
A self-contained scaffold and lift unit includes first and second pairs of parallel, spaced apart vertical rails joined together by horizontal braces. A movable lifting carriage unit is disposed between the pairs of vertical rails and includes pairs of rollers engaging and captured between the pairs of vertical rails to provide smooth vertical motion with respect to the rails. A primary load-bearing platform is removably attached to a lower portion of the carriage unit and an auxiliary load-bearing platform is removably attached to an upper portion of the carriage unit. A manually driven hoist is attached to the carriage to allow controlled movement. The carriage unit is positioned with respect to the rails by the hoist. An auxiliary base assembly is removably mounted to the scaffold unit to secure the scaffold unit in an erect and freestanding manner. The rigid scaffold units are assembled in modular interfitting sections to allow a scaffold of any desired height to be formed.
REFERENCES:
patent: 1393932 (1921-10-01), Andre
patent: 1715200 (1929-05-01), Lambert
patent: 2803503 (1957-08-01), Borgman
patent: 2997126 (1961-08-01), Morgen
patent: 3016989 (1962-01-01), Lindmark
patent: 3169604 (1965-02-01), Dranger
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