Weck jar 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 J. WECK Company in Germany, who began selling them in 1895. They were initially sold in Germany and began selling outside of Germany in 1902. It soon became the most popular home canning system in Germany and Europe. This system uses glass jars (200 ml–1.5 l), reusable rubber seals, and glass lids. During the canning process the lids are
William S. Mason William S. Mason William Spencer Mason (1832 – March 27, 1899) served as mayor of Portland, Oregon, from 1891 to 1894 and 1898 to 1899. Mason was born in Virginia in 1832. From humble origins, he began his career in railroads in the South and Midwest, continuing in San Francisco in the early 1870s, where he helped organize street railway companies. After moving to the Northwest, he helped construct the Northern Pacific line between Tacoma and Seattle. Moving to Portland in 1881, he established McCraken & Mason, then the W. S. Mason Company, and in 1886 converted the firm into