Horizontally supported planar surfaces – Folding – With vertical adjustability
Patent
1984-03-05
1986-05-20
Lyddane, William E.
Horizontally supported planar surfaces
Folding
With vertical adjustability
108153, A47B 4700
Patent
active
045893500
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a shelf assembly defined in the preamble of the annexed claim.
BACKGROUND OF THE INVENTION
Mounting of shelf boards on shelf supporting crossbars leads to problems in element-structured, free-standing shelf assemblies which are held together by structural elements, i.e. bearing crossbars and shelf boards and which can be extended into larger shelf assemblies. Coupling of shelf boards together for holding the assembly intact creates further problems. For example, in wood construction shelves, the coupling elements comprise screws, consoles and the like metal fasteners. When a shelf assembly is to be made of purely natural material, e.g. wood, the use of metal fasteners is out of the question. A further drawback involved in the use of metal fasteners is that the fitting, mounting and usually also the use thereof requires special tools. Metal fasteners may cause trouble when used e.g. in display racks of clothing stores since thinner clothes easily grab the generally sharp edges of metal fasteners and thus tear themselves easily. In terms of aesthetics, metal fasteners are not genereally desirable.
SUMMARY OF THE INVENTION
An object of the invention is to provide a shelf assembly which is adapted to be manufactured exclusively from wood and which has no metal fasteners at all. Another object of the invention is to provide an entirely wood-constructed shelf assembly which is element-structured and thus adapted to be extended and expanded when necessary. A further object of the invention is to provide a solid, practical shelf assembly which is of simple wooden construction and has aesthetically neat appearance as well as meets the above requirements.
As for the characterizing features of the invention, reference is made to the annexed claims.
By virtue of the invention, shelf boards can be coupled endwise to supporting crossbars in a manner that the end of a preceding shelf board rests upon a crossbar covering not more than half of it, while the end of a following shelf board rests upon the same supporting crossbar and correspondingly covers not more than half of said supporting crossbar. The boards are fixed to the supporting or bearing crossbars by means of fastening dowels which extend partially in crossbars, partially in shelf boards at 45.degree. angle relative to horizontal plane.
A shelf assembly of the invention applies excellently to be manufactured exclusively and completely from wood, the construction requiring no metal fasteners at all. The shelf assembly is extremely sturdy, the set of shelves can be built from elements, such as uprights, supporting crossbars, stringers and fastening dowels which join the shelf boards and uprights together for a free-standing and sturdy assembly. Whenever desired, the shelves can be disassembled into and likewise assembled from its elements easily. Dismounting of the shelf assembly can be effected manually. As the shelf assembly is loaded, said shelf boards, fastening dowels and supporting crossbars as well as uprights lock themselves even more rigidly together, in other words, loading of the shelf assembly increases the stability of said assembly.
DESCRIPTION OF THE DRAWINGS
The invention will now be explained in detail by means of a work example with reference made to the accompanying drawing, in which:
FIG.1 shows one shelf assembly of the invention inclined from above,
FIG. 2 shows fastening of shelf boards to supporting crossbars in the shelf assembly of FIG. 1 in partial section and viewed from the end of a crossbar,
FIG. 3 shows the coupling of elements as viewed from the end of a shelf board.
DESCRIPTION OF THE ILLUSTRATED EMBODIMENT
The shelf assembly shown in FIG. 1 comprises a support frame consisting of uprights 1 joined pairwise together by supporting crossbars 2. Upon said supporting crossbars 2 are placed elongated, rectangular shelf boards, the bars extending crosswise below said shelf boards. As viewed from above, the uprights 1 are positioned to form a rectangle, the supporting crossbars are parallel, h
REFERENCES:
patent: Re28244 (1974-11-01), Evans
patent: Re28293 (1975-01-01), Bustos
patent: 327592 (1885-10-01), Reed
patent: 951475 (1910-03-01), Gerberich
patent: 2377156 (1945-05-01), Kimbell
patent: 2838144 (1958-06-01), MacDonald
patent: 3786611 (1974-01-01), Brown et al.
Chen José V.
Lyddane William E.
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