Fire escape – ladder – or scaffold – Wall- or floor-attached
Patent
1981-04-20
1984-02-21
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Wall- or floor-attached
182229, E04G 710
Patent
active
044324359
ABSTRACT:
A clamping device for securing a pole within a U-shaped yoke having a plate member with a hook at one end and a tooth at the other end for respectively engaging opposing slots at the distal ends of the yoke to transversely position the plate across the yoke. A bolt threadingly passes through a hole in the plate to extend in a forward direction on the plate. A bearing plate is rotatably mounted on the forward end of the bolt for abutting the pole and clamping it within the yoke.
REFERENCES:
patent: 1528268 (1925-03-01), Schlegel
patent: 1839781 (1932-01-01), Zimmersbach
patent: 3120878 (1964-02-01), Negley
Builders' Patent Scaffolding Company, p. 6--A Pole Splice Clamp.
Chin-Shug Alvin
Machado Reinaldo P.
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