| 摘要 |
<p>EARL E. FRANK ~ . For: RAILROAD LUBRICATORS . A lubricator (which may be of rail form, tilted on its side) for applying lubricant to a railroad wheel : characterized by a first and second series of slots so arranged that lubricant is applied to the wheel in spaced segments during one half the wheel turn while the dry segments in between are lubricated in the next half turn; the lubricant first applied to the wheel is re-transferred during the second half turn.</p> |
