摘要 |
<p>611,371. Bearings. LANGHORN, A. T. J., and BARNES, C. E. April 30, 1946, No. 12956. Drawings to Specification. [Class 12 (i)] Spinning spindles are mounted in lignum vitae bearings used dry. Several bearings may be formed in each of a number of lengths of lignum vitae which are secured with tongue and groove location to the bearing rail of the machine. Alternatively, each bearing may comprise a bush with a plate-like top extension for fixing to a standard machine rail.</p> |