摘要 |
The frame is assembled of eight bars with a rectangular cross section. In a first version the vertical bars, serving as legs (1), are provided with projections protruding from two of their sides for the support of the horizontal bars (2, 3). In a second version the legs (1) are prepared with horizontal gaps for the accommodation of the horizontal bars (2, 3) and in a third version the bars (1, 2, 3) are attached to each other with threaded bolts (5).
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