| 摘要 |
1,062,752. Mineral - mining cutter picks. AUSTIN HOY & CO. Ltd. June 22, 1964 [July 8, 1963; Nov. 11, 1963; March 18, 1964], Nos. 26937/63; 44404/63 and 11517/64. Heading E1F. From the shank 32 of a mineral-mining cutter pick 33 projects transversely of the axis of the shank a latch 42, which is resiliently displaceable in a direction or directions transverse to the direction in which it projects from the shank. In addition to the embodiment shown four other embodiments are described in detail. |
