Drawing device for use in a drafting machine and a drawing pencil usedtherewith

Abstract From the Canadian patent

A drawing device for use in a drafting machine has a base movable to any desired position; at least one drawing pencil fixedly secured to the base through a holder unit fixed to the latter; a driving arrangement capable of moving part of the drawing pencil longitudinally thereof relative to the base, and a stop adapted to limit the upward movement of movable component parts of the drawing pencil. The drawing pencil comprises a casing having a lead guide fixedly secured to the leading end thereof; a pipe member slidably mounted in the casing, and having a chuck ring fixedly secured to the lower end thereof, said pipe member having a sleeve tightly fitted and fixedly secured to the outer …