Turn mechanism of the school chair shovel. (Machine-translation by Google Translate, not legally binding)

摘要

Mechanism of rotation of the school chairs shovel, characterized because it is composed of two plates, linked by an axis of rotation, one of which is fixed longitudinally to the end of the corresponding arm of the chair, and the other, which rotates on this one, supports a bent plate, in whose free end the support blade is linked, to write or take notes; the plane determined by said plates is arranged in an inclined position with respect to the imaginary vertical plane containing the arm of the chair, whose angle of inclination is supplementary to that established by the fold of the plate, so that in the working position the the blade is horizontally and transversally with respect to the front of the chair, whose blade rotates, by a manual effort, in a frontal rotation until it is placed in a vertical position directed toward the lateral edge of the seat of the chair. (Machine-translation by Google Translate, not legally binding)