Abstract: A plotting system (10) including a plotting device (40) for plotting on paper (52) is provided. The plotting system (10) includes a work surface (28). A supply source (50) of paper (52) to be plotted is disposed adjacent the work surface (28). A take-up roll (56) is disposed adjacent the work surface (28) opposite the supply source (50). A supply source (64) of carbon paper (66) is disposed adjacent to the work surface (28). A take-up roll (72) is disposed adjacent the work surface (28) opposite the supply source (64). Structure (60) is interconnected to the first take-up roll (56) for periodically advancing the paper (52) across the work surface (28) from the supply source (50) to the take-up roll (56). Structure is interconnected to the second take-up roll (72) for continuously advancing the carbon paper (66) across the work surface (28) from the supply source ( 64) to the second take-up roll (72) while the plotting device (40) plots on the paper (52).

Abstract: A carriage (30) for slidable movement along a track (100) having first and second parallel spaced apart guide surfaces (102, 104) is provided. The carriage (30) includes a base member (36). Structure (72, 78, 80) is mounted on the base member (36) for contacting the first and second parallel spaced apart guide surfaces (102, 104) on the track (100). The base member (36) includes a spring (50, 56, 58), such that as the base member (36) moves along the track (100), the base member (36) is resiliently compressed to thereby urge the structure (72, 78, 80) against the guide surfaces (102, 104) on the track (100).