Patent ID: 8104962

Claim:
An apparatus, comprising: (a) a longitudinally extending base member; (b) a moving carriage assembly member adapted to move axial back-and-forth in said longitudinally extending base member, wherein said moving carriage assembly member includes a block member; (c) two bearing members extending sideways, on opposite sides, from said moving carriage assembly and engaging longitudinal bearing guides disposed in said longitudinally extending base member; and (d) single means engaging said bearing members to simultaneously adjust said bearing members to take up any slop between said moving carriage assembly member and said longitudinally extending base member, where said single means includes a wedge shaped member engaging inner surfaces of said bearing members and advancing said wedge-shaped member into said block member, causing said bearing members to extend simultaneously outwardly into said longitudinal bearing guides; and wherein a compression biasing member is disposed between an adjusting nut and said wedge-shaped member to automatically extend outwardly said bearing members.