Blow Pot During the 1920s, bush pilots needed to heat the oil in engines on their planes using an open flame torch called a blow pot. Before take off in subzero temperatures, pilots placed the blow pot under the engine block, then covered the engine with a tarp to trap the heat. Heating an engine with a blow pot was hazardous, and could take as long as two hours Bush pilots also took this opportunity to warm themselves! SPECIFICATIONS Accession # 96-214 or 2017-R0707