Samuel Blatchford

“ The vessel or chamber containing the oil or hydro-carbon is submerged in water, so as to always keep the said oil vessel or chamber cool, and thereby free from explosive or other accident. The water vessel is covered with a perforated metal plate, which forms the base of the hot-air cylinder, on the top of which the culinary or other vessels to be heated are placed. Vertical tubes or flues are placed in the hot-air cylinder in such positions as to act as chimneys for the burners. ”

“ Portions of this diaphragm are formed into conical flame-caps,h, for controlling and confining the flame within its proper limits in a manner similar to that in common use in illuminating lamps.
'Above the diaphragms, H, tubes or chimneys, I, confine the hot gasses and products of combustion from the flames of the burners within proper limits for the efficient action of the burners. ”