A bed warmer or warming pan was a common household item in countries with cold winters, especially in Europe.
[citation needed] It consisted of a metal container, usually fitted with a handle and shaped somewhat like a modern frying pan, with a solid or finely perforated lid.
A doctor advised his readers in a c.1790 publication to avoid bed warmers, or, if needed, replace the embers with hot sand.
[citation needed] With the advent of rubber, the hot water bottle became dominant.
[5] An alternative kind of bedwarmer in the mid-20th Century in the UK was a 36cm/14inch pressed steel "flying saucer" or lozenge-shaped device made by Belling (established 1912),[6] powered using an internal 40W incandescent light bulb as a heat source.