Abstract: A coupling for furniture components includes two cheeks, each including a plurality of seats which, when matched, define housings for tubular elements such as furniture legs to be secured between the two cheeks. Each seat opens at the edge of the respective cheek and has a cross-section defining, with a facing seat, a housing with a cross-section that is slightly less than that of the tubular element to be secured. In one embodiment, a flat longitudinal wall in the seat blocks the rotation of the tubular element within the housing. Each seat in at least one cheek is also provided with a projecting element cooperating with a complementary aperture defined in the tubular element, and in one embodiment has an arched portion extending from the seat towards the facing cheek to define a closed cross-section that engages the tubular element.

Abstract: A spectacle family having frames with different curvatures and extensions provided with engaging elements for removable mounting of stems, the engaging elements having at least one locating surface between each removable stem and the frame, fixed to the frame and having an attitude and a first distance which are constant with respect to an axis of symmetry of the spectacles.