| 摘要 |
<p>The tool is provided with an oblong handle (1), which at one end has a portion (5) for engaging the cap (7) of a preserving jar (8), and a jaw (2) for engaging the lower edge of the cap. The mouth of the jaw is turned away from the other end of the handle, and between the free end (3) of the jaw and the portion (5) for engaging the cap (7) a concave, circular cylindrical guide slot (6) is provided, said guide slot (6) guiding the tool into position against the rim of the cap in such a way that the jaw grips the lower edge of the cap, after which a slight lifting of the handle brings about an elastic deformation of the rim of the cap allowing the vacuum in the preserving jar to be broken.</p> |
