Here is the ultimate attempt to compete with the arrival of butane gas stoves at Lilor. And I must admit that it is quite impressive with an instant start without the slightest maneuver and without preheating The principle is simple : we inject pressurized air taken from the top of the tank from preheating so that the gasoline vaporizes and ignites instantly. On previous models: https://f231b8ec-696a-4b45-87a4-12f253c7b3de.filesusr.com/ugd/ce3c7d_df2e2df779f84b8ea41b3bdddfcc4b e0.pdf There were two levers to operate. And we had to close the air lever otherwise we found ourselves quickly without pressure Here there is only one, we turn the black lever by presenting a flame ... and that all This system is based on two patents that some of you will be happy to dissect a 1929 Coleman: Espacenet - Original document & date = 19290803 & DB = & locale = fr_EP # A Liotard or Lilor from 1934: Espacenet - Original document & date = 19341122 & DB = & locale = fr_EP # It is a model in enamelled stamped steel whose enamel has slightly cracked. It existed with an enamelled cast iron frame.