High productivity automatic drawing machine - uses adjustment element for drawing pencil or pen operated by helical spring

摘要

Device to improve the output on devices forming part of automatic drawing installations improves the guidance and the hold for normally used drawing utensils. The force of contact of the drawing instrument on to the drawing surface may be reduced by an adjustment operated by a helical spring. The drawing instrument is positioned in a guide tube and are together adjustably mounted on a holder. An adjustment screw with a fine thread is used to alter the force with which the drawing instrument contacts the paper surface.