Patent Model - Improvement in Fruit-Jar Covers

Maker and role
John Mason (b.1832, d.1902), Patentee
Production date
Apr 01 1873
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Object detail

Glass, metal, porcelain
7 x 3 3/4" (17.8 x 9.5cm)
Mason’s patent describes his improvements: “I am aware that cast-iron jars have been coated with enamel, and I do not claim, broadly, coating metal with enamel. But in my invention
I combine with a glass jar an elastic sheet-metal cover, which
can be spun up or punched and stamped into the required
size and shape, and coated with enamel or glass…” (Patent number 137,462)
Object number
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