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
Dorothy Kilner Dorothy Kilner Dorothy Kilner (17 February 1755 – 5 February 1836), who used the pseudonyms M. P. and Mary Pelham, was a prolific English writer of children's books, who combined didacticism with a strong knowledge of children's character. Dorothy was born on 17 February 1755, probably at Woodford, Essex. She was the youngest of five children of Thomas Kilner (1719–1804), public servant and landowner, and his wife, Frances, née Ayscough (1718–1768). The family moved to Maryland Point, then in Essex, in 1759. She was greatly inspired by a friendship that began in childhood with Mary Ann Maze (Mary Ann Kilner,