Fire escape – ladder – or scaffold – Wall- or floor-attached
Patent
1980-07-09
1983-06-21
Machado, R. P.
Fire escape, ladder, or scaffold
Wall- or floor-attached
182130, 182150, 182115, E04G 310, B63B 906
Patent
active
043889824
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a foothold device which is to be provided on such vertical wall surface as of a high building and is characterized in that foothold plates are connected with each other through chains, therefore can be transported and housed as stacked as they are, are easy to set, do not twist the chains and are easy to horizontally set.
BACKGROUND TECHNIQUE
There is already a method of forming a foothold to be provided on such vertical wall surface as of a high building wherein framework members are stacked in turn on the ground surface or wherein embedded pieces called inserts are provided in advance in concrete for a building or in prefabricated units and are used.
The first method, that is, the method of forming a foothold by stacking framework members on the ground surface along the wall surface of a building shall be described first. It has defects that many framework members are required for a high building, troubles are required for the assembling work, much labor and time are required for the disassembly and transportation in moving the field and further, as the members are stacked from below in the assembling work, there is a danger that the framework may fall.
The second method, that is, the method of forming a foothold by providing embedded pieces in concrete for a building or in prefabricated units and utilizing them shall be described now. It has defects that embedded pieces called inserts must be provided in advance in concrete units or prefabricated units, troubles are required to make the foothold, the cost is high and further an aftertreatment must be made by fitting plugs into the exposed part of the wall surface after the work is completed. According to the present invention, foothold plates are connected with each other through independent chains so as to be easy to carry, house and set, to prevent the chains from being twisted, to be easy to horizontally set and to make the foothold setting work safe.
DISCLOSURE OF THE INVENTION
The present invention relates to a foothold device to be suspended from above wherein foothold plates are connected with each other through independent chains substantially in four corners and further respective independent chains are connected above the uppermost foothold plate and below the lowermost foothold plate and are connected and fixed to fitting members provided in the upper and lower parts of the wall surface.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a device according to the present invention;
FIG. 2 is a perspective view of a chain fitting part;
FIG. 3 is a disassembled perspective view of a handrail fitting part;
FIG. 4 is a perspective view of a distance adjusting member part;
FIG. 5 is a perspective view of a length adjusting part;
FIG. 6 is a perspective view of a twist preventing member part;
FIG. 7 is a perspective view of a device according to the present invention showing another embodiment.
BEST FORM TO WORK THE INVENTION
The present invention shall be described in detail in the following with reference to the accompanying drawings.
In FIG. 1 showing a perspective view of a device according to the present invention, reference number 1 denotes a wall surface of a high building and fitting members 2a, 2b and 3a, 3b are fitted at a predetermined width in the lateral direction to the upper and lower parts of the wall surface 1. Needless to say, independent chains 4a, 4b and 5a, 5b are fitted respectively to the above mentioned fitting members 2a, 3a. Length adjusting members or concretely turnbuckles 6 are provided respectively in proper positions of the chains 4a, 4b and 5a, 5b. Needless to say, instead of the fitting members 2a, 3a, such fitting members as rails may be parallelly projected from the roof and foothold plates may be suspended from them. Then, chain fitting pieces 8a, 8b and 9a, 9b are connected respectively to the lower ends of the above mentioned chains 4a, 4b and 5a, 5b.
In FIG. 1, the above mentioned chain fitting pieces 8a, 8b and 9a, 9b are not directly fitte
REFERENCES:
patent: 1484480 (1924-02-01), Donaggio
patent: 1683138 (1928-09-01), Kautz
patent: 2223980 (1940-12-01), Zent
patent: 2556105 (1951-06-01), Rhett
patent: 3375900 (1968-04-01), Conley
patent: 4068738 (1978-01-01), Reed
patent: 4121822 (1978-10-01), DiSabatino
patent: 4253549 (1981-03-01), Petren
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