Fire escape – ladder – or scaffold – Self-sustaining – Scaffold horse
Patent
1984-02-21
1985-01-29
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Self-sustaining
Scaffold horse
182226, F16M 1100
Patent
active
044960280
ABSTRACT:
A sawhorse utilizing no nails or other fasteners comprising an elongate, generally circular member having a comparatively thick sidewall, but being otherwise hollow. The generally circular member is made of resilient material, having a spring-like quality, and the sidewall of the member is longitudinally cut for its entire length in a direction essentially parallel to the centerline of the generally circular member. Also, a pair of leg-receiving holes are cut through the generally circular member at a location substantially opposite from the longitudinal cut, with such holes being circumferentially spaced apart, and each being substantially equidistant from the ends of the circular member. Each of these holes is arranged to receive the upper end of an elongate leg member. Therefore, as the user draws the bottoms of the leg members together, the edges of the longitudinal cut are caused to move apart, so as to be able to receive the central beam of a sawhorse, and thereafter to tightly grasp such beam in a pincers-like grip when the leg members are released. Typically, two of the generally circular members are utilized for each sawhorse, with each member having associated therewith a pair of legs. The generally circular members may be made of PVC, such as of three inch inside diameter, and the longitudinal cut may be beveled in order to increase the power with which the central beam of the sawhorse is gripped by the edges of the cut.
REFERENCES:
patent: 1174964 (1916-03-01), Bradley
patent: 2983329 (1961-05-01), Brown
patent: 3311194 (1967-03-01), Kriplen
patent: 3379282 (1968-04-01), Knuth
patent: 3406786 (1968-10-01), Lang
patent: 3995716 (1976-12-01), Bond
Machado Reinaldo P.
Renfro Julian C.
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