Fowler's Vacola
The Fowler's Vacola jar is a glass jar used in canning for food preservation. It is the most popular home canning system in Australia.
History
The system was developed in 1915 in Melbourne, Australia, by Joseph Fowler, who migrated from England in 1912, at his home in Hawthorn, Victoria, and became very popular.The jar
The Fowler's Vacola system uses glass jars, single use rubber ring seals and pressed metal lids, much like American Mason jars first patented in 1858, except that the jars and lids are not threaded. During the canning process, while still hot, the lids are secured by metal tension clips which are removed once cooled and a vacuum seal has formed.Other equipment marketed by the company included a large electrically heated waterbath and "sterilizing thermometer", a glass thermometer mounted on a concave stainless steel backing, graduated in both degrees Celsius and Fahrenheit.