Fire escape – ladder – or scaffold – Having transpositioning base and erecting means
Patent
1978-08-30
1979-10-16
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Having transpositioning base and erecting means
182127, 182145, E04G 120, E04G 124
Patent
active
041710339
ABSTRACT:
A scaffold device comprising a wheeled frame means including a front axle assembly and a rear axle assembly which are pivotally interconnected about a horizontal axis whereby either of the axle assemblies may be pivoted or rotated relative to the other. A first post is pivotally connected at its lower end to the front axle assembly and extends downwardly therefrom. A telescoping support is pivotally connected at its lower end to the front axle assembly and extends upwardly to a pivotal connection with the first post to permit the first post to be vertically positioned regardless of the attitude of the front axle assembly. A second post is pivotally secured at its lower end to the rear axle assembly and extends upwardly therefrom. A telescoping support is pivotally connected at its lower end to the rear axle assembly and is pivotally connected at its upper end to the second post adjacent the upper end thereof to permit the second post to be vertically positioned regardless of the attitude of the rear axle assembly. A platform is slidably mounted on the first and second posts and extends therebetween. The ends of the platform are raised and lowered by means of a winch mounted on each of the first and second posts. A safety catch apparatus is provided for preventing the inadvertent downward vertical movement of the platform relative to the posts. A brake apparatus is provided on each of the rear wheels for preventing the scaffold device from moving.
REFERENCES:
patent: 1442694 (1923-01-01), Martin
patent: 2106923 (1938-02-01), Tuft
patent: 3576233 (1971-04-01), Thatcher
patent: 3851728 (1974-12-01), Williams
patent: 4125173 (1978-11-01), Rust
Rust Willard J.
Rust Willard M.
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