Weck jar secured by steel tension clips which can be removed once a vacuum seal has formed. During storage the vertical position of the rubber seal's external tongue indicates the status of the sealing. Weck products are still produced and are available from German hardware and online stores. Used equipment is frequently sold on online auction sites and in opportunity shops. Weck jar A Weck jar is a molded glass jar used in canning to preserve food. It is popularly used for jam preservation, for its minimal look and foolproof rubber gasket with a glass lid. Weck jars were created by the
Mary Ann Kilner Mary Ann Kilner Mary Ann Kilner (née Maze) (1753–1831) was a prolific English writer of children's books in the late 18th century. The most famous was "The Adventures of a Pincushion" (c. 1780–1783). Together, she and her sister-in-law, Dorothy Kilner, published over thirty books. Mary Ann published under the name "S. S.", which stood for her home in Spital Square, London. Mary Ann was born on 14 December 1753 at Spital (then Spittal) Square, London, the youngest child of James Maze (d. 1794), a prosperous Huguenot silk throwster and merchant. She was bilingual in English and French and said to