Fire escape – ladder – or scaffold – Plural platforms – common support
Patent
1989-07-17
1991-09-03
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Plural platforms, common support
182222, 2482316, 52182, E04G 120
Patent
active
050444670
ABSTRACT:
A scaffold, having a main frame including four vertical posts arranged in a rectangular array and connected at the sides of the scaffold by two side trusses that support a scaffold main platform, is further provided with an auxiliary frame that supports a plurality of vertically spaced auxiliary platforms above the main platform and parallel thereto. The auxiliary frame is located at one end of the main frame and has two parallel side members, each side member having a first clamp member formed of angle stock at one end to receive a vertical post and a second clamp member formed of angle stock at the other end to receive a side truss. The vertical post is maintained with the first clamp member by a bent, partially threaded rod that is bolted to the perpendicular webs of the first clamp member and extends about the vertical post. The side truss is maintained within the second clamp member by a keeper plate bolted to the vertical web of the second clamp member and positioned to sandwich the side truss between such vertical web and the keeper plate. The side members are interconnected by at least one platform frame made of angle stock adapted to receive and stabilize the auxiliary platform.
REFERENCES:
patent: 502367 (1893-08-01), Lake
patent: 2310062 (1943-02-01), Broncato
patent: 2371092 (1945-03-01), Williams
patent: 3092382 (1963-06-01), Dunn
patent: 3556251 (1971-01-01), Whitehead
patent: 3731761 (1973-05-01), Glenn
patent: 3750845 (1973-08-01), Faulstick
patent: 4023859 (1977-05-01), Hagenson
Burdick Glen M.
Chin-Shue Alvin C.
McCarthy Bill D.
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