Abstract: A precision, hardened, radially relieved locating pin (20) comprised of a pair of cylindrically ground radially opposed locating segments (22), a pair of radially opposed radial reliefs (26) adjacent to the locating segments, a chamfered lead portion (30) and a mounting/attachment portion (32) which can be of any suitable configuration allowing interchangeability with diamond pin designs. The locating segments, the chamfered lead and the mounting/attachment portion are machined concentric about a common centerline (34). Radially opposed radial reliefs centerlines (36) are offset from, although parallel to, the common centerline. The amount of offset (38) is a direct function of desired travel (40) allowed between the locating pin and the feature (42) being located. The width (44) of the radially opposed locating segments is currently a percentage of segment diameter (24).

Abstract: A precision, hardened, radially relieved locating pin (20) comprised of a pair of cylindrically ground radially opposed locating segments (22), a pair of radially opposed radial reliefs (26) adjacent to locating segments (22), a chamfered lead portion (30) and a mounting/attachment portion (32) which be of any suitable configuration allowing interchangeability with diamond pin designs. The locating segments (22), chamfered lead (30) and mounting/attachment portion (32) are machined concentric about a common centerline (34). The radially opposed radial reliefs centerlines (36) are offset (38) from, although parallel to, common centerline (34). The amount of offset (36) is a direct function of desired travel (40) allowed between locating pin (20) and feature it is locating (42). The width (44) of radially opposed locating segments (22) is currently a percentage of segment diameter (24). Relieved locating pin (20) is to be of hardened steel and requires no custom machines or custom tooling to manufacture.

Abstract: A rigid base plate (20), (22), or (24) attaches to and is supported by or is manufactured as part of the vertical carriage plate (34) of a track type drafting machine. A rigid base plate (26 ), (28), or (30) attaches to and is supported by the vertical carriage plate (36) of a track type drafting machine. These base plates (20), (22), (24), (26), (28), or (30) support a matrix of elongated retainers (32) or other retaining mechanisms. These retainers (32) or non-scratching mechanisms must have the ability to retain drafting templates or curves on drafting surfaces from horizontal thru vertical and be easy to use. Said base plate (20), (22), (24), (26), (28), or (30) may be designed to contain trays for compasses, areas for calculators and be of single or multi-level design. This allows frequently used drafting tools to remain within easy reach of drafting person, allowing them to move without impairment and be more productive.