Abstract: A combustion cylinder construction for an oil space heater of the type for radiating heat rays is disclosed which is capable of uniformly red-heating an outer surface of an outer cylindrical member of a double combustion cylinder and efficiently radiating heat rays from the red-hot outer surface and is capable of completely burning an incomplete combustion gas and the like at a flame spreader to form a white-yellow flame and efficiently radiating heat rays from the flame. The outer cylindrical member has through-holes larger than those of an inner cylindrical member and is provided at the upper portion thereof with a recess having through-holes. The combustion cylinder and flame spreader are surrounded by a single heat-permeable cylinder.

Abstract: The burning cylinder for use in heating apparatuses consists of a base which is disposed to surround a heat source such as flame or red-hot material, constitutes the shell of a burning chamber and is made of a material that is high in heat-resistivity and transparent or translucent such as glass or the like and at least has its inside deposited with a coating layer of metal, e.g., Ti, Zr, Fe, etc. or a coating layer of a compound of such metals.

Abstract: A device for vertically moving a wick in an oil burner is disclosed which is capable of constantly ensuring the normal combustion operation of the oil burner. The device includes a drive shaft having a pinion, a rack disposed adjacent to a wick receiving chamber of the burner which is engaged with the pinion and connected to a wick to vertically move it when the drive shaft is rotated, and a stop member for stopping the movement of the rack with respect to the pinion only when the wick is lowered to the minimum normal combustion position to thereby ensure the normal combustion.

Abstract: A red-hot type oil burner capable of effectively accomplishing uniform vaporization of a fuel oil during the normal combustion operation. A heat transfer means is provided between a combustion chamber and a vaporization chamber to transmit a part of combustion heat to the vaporization chamber. The oil burner may be provided in a mixing chamber with a diffusion plate having a cutout to allow the ignition to be rapidly and safely effected. The oil burner may be also provided with a device for preventing the generation of a bad odor. There is also disclosed a red-hot type oil burner capable of surely confirming the completion of the igniting and fire extinguishing operations.

Abstract: A petroleum combustion device for heating rooms or the like comprising a primary combustion chamber, a secondary combustion chamber disposed on the primary combustion chamber and provided at that portion of its base plate which is outside an outer cylinder of the primary combustion chamber with an air path and a flame extension device arranged in the secondary combustion chamber and communicated with the upper portion of an inner flame cylinder of the primary combustion chamber.

Abstract: A fire extinguishing device for an oil burner capable of instantaneously and surely accomplishing the fire extinguishing with ease and without generating any bad odor. A wick receiving chamber has a width larger than the thickness of a wick received therein and an air chamber communicated to the wick receiving chamber is disposed adjacent thereto. The air chamber is adapted to be communicated to an ambient atmosphere during the combustion operation and to be shut off therefrom by means of a valve. The fire extinguishing of an oil burner is accomplished by utilizing an air stored in the air chamber.

Abstract: An oil burner of the type of pumping up a fuel oil is disclosed which has a first oil level setting means of an airtight type having an overflow pipe means constantly immersed at the lower end thereof in a fuel oil to be pumped up to the first oil level setting means and has a second oil level setting means disposed below the first oil level setting means and directly connected to a fuel oil supply tank. A fuel oil supplied from the second oil level setting means is drawn up to the first oil level setting means by a pumping-up means and subsequently supplied through a supply pipe to a combustion means. The level of a fuel oil in the first oil level setting means is kept constant at a position above the outlet end of the supply pipe. The overflow pipe means may be movable in the vertical direction so as to vary only the supply rate of a fuel oil.