Means for attaching pencils to templates

Claim 1

A drafting guide comprising: a template having normally upper and lower surfaces and containing at least one undercut slot having a relatively wide lower portion opening through said lower surface and a relatively narrow upper portion opening through said upper surface, whereby said slot forms shoulders at opposite sides of said upper slot portion spaced from said lower template surfaces by said lower slot portion, a clip of generally Y-shape removably fitted within each template slot including a central neck extending through said upper slot portion, a lower end portion comprising an enlarged base at the normally lower end of said neck extending laterally under said shoulders in contact therewith and having a thickness normal to the plane of the template approximating or less than the depth of said lower slot portion, and an upper end portion comprising a pair of resilient arms at the normally upper end of said neck normally disposed in a transverse plane of said slot and projecting above said upper template surface and laterally of said shoulders in contact therewith, whereby said clip is retained in said slot by said shoulders, said arms of each clip being shaped to yieldably grip a marking implement therebetween, each clip being rotatable in its slot about the longitudinal axis of its neck to a position wherein its arms are disposed in the plane of its slot, and one of said end portions of each clip being sized relative to the dimension of its respective slot to pass through said upper slot portion for removal and replacement of the clip when it occupies said latter portion in the slot.