Fire escape – ladder – or scaffold – Stackable – Male and female connecting means
Patent
1997-04-03
1999-05-11
Stodola, Daniel P.
Fire escape, ladder, or scaffold
Stackable
Male and female connecting means
1821781, E04G7/00
Patent
active
059018100
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a frame component having two posts, which preferably have a circular-pipe shape in cross section and are rigidly connected with one another adjacent their ends by horizontal cross-traverses, for a vertical scaffolding frame of a stationary and/or movable scaffolding of prefabricated structural components. The frame component is used for the releasable connection of horizontal, rectangular platforms, which can be placed on the cross-traverses or similar structural components of two adjacent frame components, thereby covering a cross section of the respective cross-traverse, and defining the distance between the associated scaffolding frames. The platforms can be equipped with openings and define longitudinal and/or transverse side pieces. The frame components are joined with diagonal longitudinal and/or transverse reinforcements, which can be fastened to the frame components, and/or longitudinally and/or transversely extending railing and/or intermediate spars or other structural components.
BACKGROUND OF THE INVENTION
Scaffoldings of prefabricated structural components, which are to be fastened stationarily to the building, and, if necessary, can be converted into movable scaffoldings, have been known for a long time. However, an extensive use of these scaffoldings is hindered by the platforms not being able to be connected at variable heights to the scaffolding frames, and, in particular, also not being able to be installed and removed or elevationally shifted as desired and without a large effort for the complete assembly of the scaffolding. The locks usually used for connecting the remaining structural components to the posts are quite susceptible to wear, require considerable labor for installation and removal, and are also cumbersome during transport and stacking of the frame components. The connecting of the spars and reinforcements is fixed at certain heights by the stationary scaffolding and has little flexibility in order to be able to also be successfully used on a mobile scaffolding, on which these heights must be significantly more variable. The laterally defining scaffolding frames differ in addition from the others by having rigidly fastened ladder rungs for climbing so that a second type of frame components must be provided.
The basic purpose of the invention is therefore to provide a frame component of the type discussed in detail above in such a manner that the disadvantages of the conventional scaffolding frames are eliminated, and, in particular, that the platforms can be suspended, removed and changed as desired on a completely assembled scaffolding. The connection of all structural components on the posts is possible in a simple manner with similar connecting components and at relatively narrow-joints elevationally positioned on a grid. The frame components can be equipped also with crossbars serving as ladder rungs. The frame components must be easily stackable, and must be designed such that none of the side surfaces parallel to the building, on which work is to be done, is designed with a protrusion and that each of these side surfaces can be used as a work front.
SUMMARY OF THE INVENTION
The purpose is attained according to the invention by the posts having in a convenient manner at their one end a first part closing off the respective post, for example an integrated pipe piece, and at their other end a second part complementary thereto and projecting over the respective post, for example a bolt piece of a lockable telescoping coupling, by the connections of the cross-traverses being provided at the posts with torsion-hindering reinforcements preferably stabilizing the rectangular shape of the frame component, and by the upper cross-traverse being constructed continuously and being connected directly to the posts and the lower cross-traverse, on both sides being bent downwardly to form first reinforcements, is connected to the posts.
Such an arrangement has the great advantage that the lower cross-traverse can be mostly positio
REFERENCES:
patent: 3037588 (1962-06-01), Causey
Krause-Werk GmbH & Co. KG
Stodola Daniel P.
Thompson Hugh B.
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