| 摘要 |
FIELD: ship building. ^ SUBSTANCE: two plates are turned upward from ship deck to form a certain angle between themselves and gap between their adjoining edges, said gap corresponding the chain or cable link thickness. Jack interacting with lever mechanism, which, in one end position, locks the plates vertically, actuates every plate. Lever additional locking is performed by controlled reciprocating bolt. ^ EFFECT: higher safety of jobs on ship deck. ^ 4 cl, 12 dwg |
