| 摘要 |
Guide wheels with eccentric adapter bushings to provide precision attachment relatively to tracks. Each guide wheel is formed in a double V which provides four inclined circular surfaces permitting use both in horizontal and vertical position and adapted to co-operate with tracks of suitable angles both by the enclosed central groove and by the two outside inclined annular surfaces. The eccentric nut and bolt permits the accurate shifting of the wheel for precision adjustment. The mounting surfaces of the track are accurate and held to close tolerances and are interchangeable.
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