Fire escape – ladder – or scaffold – Scaffold supported internally on shaft
Patent
1977-07-15
1978-11-14
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Scaffold supported internally on shaft
182178, 182179, 182229, E04G 106, E04G 112, E04G 136
Patent
active
041251741
ABSTRACT:
Scaffolding, for working in an area having relatively close spaced sidewalls, comprising generally T-shaped stackable members wherein the top of the T is adjustable outward to contact the sidewalls and limit sideway scaffolding movement. The T-shaped members can be stacked vertically, one atop the other, to provide different heights. A work platform, or staging, extends between the top of the uppermost T-shaped section and the top of a similar height spaced apart T-shaped section. Horizontal supports or stabilizers extend between the vertical columns which are built up from the T-shaped sections. The T-shaped sections are formed from metal tubing with adjustable portions, such as a threaded member, being connected at the ends of the top tubular member. When the scaffolding is erected, these adjustable members are adjusted out to engage the walls between which the scaffolding is utilized. Guides are provided on the ends of the top tubular member to limit movement of the staging or work platform supported thereon. The bottom T-shaped member in each vertical column includes a base. The bottom of the other T-shaped members includes a stud which fits into the top of the next lower T-shaped member to provide a vertical support column. The horizontal stabilizers which extend between adjacent vertical columns include shaped connectors formed at each end thereof. The connectors are of a relatively snug fitting and limit movement of the vertical columns. The connectors are preferably formed from a square tubular member which is attached to the vertical column and a square stud which is attached to the horizontal member. The square stud connects into the square tubular member when the scaffolding is erected.
REFERENCES:
patent: 1213043 (1917-01-01), Walker
patent: 2744674 (1956-05-01), Smith
patent: 3245188 (1966-04-01), Evans
patent: 3490559 (1970-01-01), Torch
patent: 4015395 (1977-04-01), Gostling
Machado Reinaldo P.
Swiss Fabricating, Inc.
Yeager Robert D.
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