| 摘要 |
1,167,714. Pick-retaining latch; stud and socket fastenings. MATTHIAS SPENCER & SONS Ltd. 26 Jan., 1967 [31 Jan., 1966], No. 4190/66. Headings E1F and E2B. [Also in Division F2] A latch for retaining a tool shank in a shank-receiving bore of a tool holder, e.g. a mineral-mining pick-receiving holder, and which is housed in a passage extending through the holder to intersect with said bore comprises a locking pin 2 that is, when inserted into the passage, biassed out into the bore by a resilient backing member 3 having integrally formed with its ends sealing caps 6 for sealing off the passage to the entry of dirt when the latch is in the passage. |
