| 摘要 |
<p>1,111,662. Mineral-mining cutter pick arrangement. JOY MANUFACTURING CO. 7 May, 1965 [22 May, 1964], No. 19326/65. Heading E1F. Kerf-cutting picks of a pick arrangement for a mineral-mining machine are arranged in groupings of primary and secondary picks with the primary picks having cutting tips extending further transversely of the orbital motion of the picks than the cutting tips of the secondary picks with each of the second tips being located transversely between the orbital paths of the tips of two or more proceeding primary tips.</p> |
