Mason jar
A glass jar with a threaded neck and screw lid that made home preserving simple and safe.
Mason patented the jar in 1858, but the patent expired in 1879 and many makers adopted the form. The jar became a symbol of the American household. Examples are in the Smithsonian.
Materials: Pressed glass, zinc, rubber
Manufacture: The glass was pressed in a mould with threads in the neck; the zinc lid screwed down onto a rubber ring.
The threads in the neck for the screw lid.
The embossed lettering with the patent date 30 November 1858.