The Patent Instra Warmer, a rectangular copper, charcoal-burning vessel with carrying handle for warming hands. Comprising a decorative metal cylinder embossed in Art Nouveau design with perforations and with the motto "Warmth is Life". Refills were surrounded by a layer of gauze to prevent sparks and could burn for three or four hours. D.B. Air & Co., 47 Cannon Street, London, E.C.
Stamford collection; devised to the National Trust by Roger Grey, 10th Earl of Stamford (1896-1976).
Marks and inscriptions
WARMTH IS LIFE (embossed)