Fire escape – ladder – or scaffold – Self-sustaining – Scaffold horse
Patent
1980-01-17
1981-11-03
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Self-sustaining
Scaffold horse
182185, 182224, F16M 1100, E04G 132
Patent
active
042980950
ABSTRACT:
A one piece frame for carrying a platform made from a unitary channel adapted to releasably receive a plurality of support legs. Adjustable top brackets mountable in the channel for supporting the platform connect to the frame to affix thereto.
Bracing members on the frame prevent lateral shifting of the support legs. The channel at the leg is notched or recessed to permit a clamp to engage standard and substandard legs commonly made from two (2)-foot-by-four (4)-foot wood. Also, the clamps are provided with a plurality of teeth angularly disposed to engage the adjacent leg substantially perpendicular.
REFERENCES:
patent: 351143 (1886-10-01), Whittingham
patent: 371279 (1887-10-01), Richstine
patent: 714761 (1902-12-01), Tilley
patent: 789843 (1905-05-01), Dennis
patent: 1271095 (1918-07-01), Staines
patent: 1441806 (1923-01-01), Hoitsma
patent: 2038899 (1936-04-01), Hoitsma
patent: 2216912 (1940-10-01), Hoitsma
patent: 2611932 (1952-09-01), Olssan
patent: 4228871 (1980-10-01), Koffski
Jackson Ronald A.
Maruscak John
Black & Decker Inc.
Machado Reinaldo P.
Murphy Edward D.
Ottesen Walter
Weinstein Harold
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