KEYBOARD MECHANISM TRACKING SYSTEM

摘要

A keyboard support mechanism (10) is disclosed as including an improved arrangement for supporting a trolley (16) of such mechanism for movement relative to a guide track (14) by which the mechanism (10) is mounted on a work station (12). The trolley (16) is fitted with two pairs of rollers (40, 44) arranged to roll lengthwise of the guide track (14) within a pair of edge mounted mounting channels (34) thereof and a follower (48); and the guide track (14) is fitted with guide member (50) having a guide channel (52) adapted to slidably receive the follower (48) while preventing movement of the trolley (16) transversely of the guide channel (52). The guide channel (52) extends rearwardly of a front end (52a) of the guide track (14), whereby to cooperate with the follower (48) to stabilize an auxiliary surface (18b) on which a keyboard (18) is supported against undesired transverse or sidewise movement when in its extended use position, while permitting loose fitting of the trolley (16) within the guide track (14) during a substantial portion of its movement of the auxiliary surface (18b) to and from its rearward storage position.