Adjustable roof scaffold jack

Details Adjustable roof scaffold jack Adjustable roof scaffold jack

1986-07-21

1987-06-30

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Pitched roof conforming scaffold

182 82, 182178, E04G 314

Patent

active

046763414

ABSTRACT:
An adjustable roof scaffold jack means for mounting on a pitched roof that includes adjustment means coupled to a support member adapted to be leveled to the horizontal for receiving a platform for workman to use in working on a vertical or angular surface adjacent to said pitched roof. The means include a base for mounting on the roof and a hinged support member with the adjustment means extending therebetween. The jack means when used with additional jack means forming a base for receiving platforms and conventional scaffold means which are tied together to present a safe area for receiving platforms for workmen to stand on.

REFERENCES:
patent: 429427 (1890-06-01), Dearborn
patent: 742565 (1903-10-01), Berry
patent: 1142694 (1915-06-01), Gilbert
patent: 1226169 (1917-05-01), Bauer
patent: 1452717 (1923-04-01), Wertz
patent: 1599209 (1926-09-01), Cashman
patent: 2729517 (1956-01-01), Hamilton
patent: 3082843 (1963-03-01), Leonard
patent: 3164353 (1965-01-01), Rene
patent: 4342374 (1982-08-01), Montana

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