Primus stove

Hjorth & Co. (later Bahco), a tool and engineering firm begun in Stockholm in 1889, acquired the exclusive rights to sell the Primus stove.

[6] Primus stoves also accompanied George Mallory's ill-fated expedition to Mount Everest in 1924,[7] as well as Tenzing and Hillary's successful one in 1953.

1 stove, made of brass, consists of a fuel tank at the base, above which is a "rising tube" and the burner assembly.

The kerosene vapour is then forced under pressure through the descending tube (D) to the vapor nozzle (E); here it sprays through a jet in the middle of the burner, where it mixes with air and burns in a sootless blue flame.

Prior to the introduction of the Primus, kerosene stoves were constructed in the same manner as oil lamps, which use a wick to draw fuel from the tank to the burner and which produce a great deal of soot due to incomplete combustion.