| 摘要 |
A sealing key for closing glass jars by tin lids comprises a housing consisting of a flange and a cylinder with a cone, inside which a compression spring is radially arranged, which interacts with the inner surface of the cylinder with cone and a ring mounted inside the body and coaxial thereto, two pairs of intersecting levers interacting with each other and located in pairs in mutually perpendicular planes, besides the flange and a part of cylinder radially have four symmetric slots, in which rods of circular cross-section are placed which are made of spring steel and engaged by the slots at the ends to the weld thin ring made of spring wire mounted radially outside of the body and resting against its flange. |
