TOOL FOR BREAKING A VACUUM IN A PRESERVING JAR CLOSED WITH A SCREW CAP

摘要

The tool is provided with an oblong handle (1), which at one end has a portion(5) for engaging the cap (7) of a preservingjar (8), and a jaw (2) for engaging the lower edge of the cap. The mouth ofthe 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 thecap (7) a concave, circular cylindrical guide slot(6) is provided, said guide slot (6) guiding the tool into position againstthe rim of the cap in such a way that the jaw grips thelower edge of the cap, after which a slight lifting of the handle brings aboutan elastic deformation of the rim of the cap allowingthe vacuum in the preserving jar to be broken.