DRAFTING MACHINE Russian patent published in 1997 - IPC

FIELD: equipment for effectuating drafting and graphic works. SUBSTANCE: drafting machine has drafting board positioned for pivoting and inclination, reflector supported by pole and connected with it and with square transparent drafting board positioned above reflector with light source. Reflector is coupled with pole through yoke, which embraces pole for pivoting in horizontal plane, rollers positioned on mutually perpendicular diameters of yoke coinciding with diagonal lines of drafting board, rollers extending along edge of reflector and mounted on mutually perpendicular diameters of reflector, which are in parallel with sides of drafting board, and closed extensible member, which embraces succession of rollers mounted on yoke and on reflector. Pole is provided with slots. Light source, which may be connected to power supply, is positioned within cavity of pole in central part of reflector. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 2 cl, 4 dwg