Fire escape – ladder – or scaffold – Self-sustaining – Scaffold horse
Patent
1975-08-27
1976-12-07
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Self-sustaining
Scaffold horse
182226, F16M 1100
Patent
active
039957160
ABSTRACT:
A pair of support leg means each comprising a pair of identical support members are secured together by individual bolts to engage a dependent web of the top member of the saw horse. Each support member has a tapered flat abutting surface thereon and an adjacent tapered flat clamping surface formed on offset inner lateral marginal portions thereof which are at the upper end portions of the support members when operatively positioned. The abutting surfaces are at a first acute angle to the longitudinal axis of the support member and the clamping surfaces are at an acute angle several degrees less than the abutting surfaces to facilitate obtaining a good clamping action by the support members onto the web members when the pairs of support leg means are operatively positioned.
REFERENCES:
patent: 129978 (1872-07-01), Noggle
patent: 467081 (1892-01-01), Church
patent: 1298867 (1919-04-01), Beland
patent: 2373485 (1945-04-01), Long
patent: 3379282 (1968-04-01), Knuth
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