Abstract: The invention can be used to secure writing tablets to different types of chairs with legs of different thicknesses and diameters, such that writing tablets can be installed on simple chairs with no armrests. The invention is essentially characterized in that it comprises: a main part having two through-holes therein, namely a first hole for receiving and housing the tubular support of the writing tablet and a second hole dimensioned to be coupled to one of the legs of the chair, and a vertical rod; and a pivoting part connected to the main part by means of the rod, aligned with the second hole and adapted to open and close such that the securing element can be released from the leg of the chair.

Abstract: Table frame that can be adapted to table tops of different dimensions and shapes, of the type that comprise a structure formed by a plurality of cross members supported by a plurality of supporting legs on which the table top is mounted, which comprises a first cross member and a second cross member joined together at an intermediate point of intersection that comprises an joint, said joint allowing the rotation of the first cross member and of the second cross member with respect to the point of intersection in a horizontal plane of rotation parallel to the surface of the table top, it being possible for said frame to adopt a position that may be selected from: a closed position in which the first cross member and the second cross member are positioned in parallel; and an open position in which the first cross member and the second cross member are positioned in the shape of a cross.

Abstract: Table frame that can be adapted to table tops (2) of different dimensions and shapes, of the type that comprise a structure formed by a plurality of cross members supported by a plurality of supporting legs (4), on which the table top (2) is mounted, which comprises a first cross member (5) and a second cross member (6) joined together at an intermediate point of intersection that comprises an articulation (7), said articulation (7) allowing the rotation of the first cross member (5) and of the second cross member (6) with respect to the point of intersection in a horizontal plane of rotation parallel to the surface of the table top (2), it being possible for said frame (1) to adopt a position that may be selected from: a closed position in which the first cross member (5) and the second cross member (6) are positioned in parallel; and an open position in which the first cross member (5) and the second cross member (6) are positioned in the shape of a cross.