The present invention provides a gas combustor which includes a gas container having a discharging nozzle, a fuel gas controlling device, and a piston disposed between the gas container and the fuel gas controlling device and capable of being reciprocally moved; through the pressure applied by a second spring provided in the fuel gas controlling device to the piston being greater than the pressure of a first spring and the fuel gas in the discharging nozzle and the pressure applied by the second spring to the piston being smaller than the pressure for vaporizing fuel in a vaporization chamber, the piston is enabled to be reciprocally and axially moved for opening or closing the discharging nozzle, thus the liquid gas can be effectively and fully vaporized and the combustion efficiency can be greatly enhanced.

A rotatable and removable connection for use in a welding torch assembly that allows for the gooseneck to be removeable and rotatable by the use of an interference member that allows the welding torch assembly to enter a locked, unlocked and partially lock state by moving the interface member about the central axis of the welding torch assembly, the partially lock state allows for rotation of the gooseneck without allowing for removal of the gooseneck, and the electrical connection provides electrical conduction via a conduction member that is independent form the locking features of the welding torch assembly.

A rotatable and removable connection for use in a welding torch assembly that allows for the gooseneck to be removeable and rotatable by the use of an interference member that allows the welding torch assembly to enter a locked, unlocked and partially lock state by moving the interface member about the central axis of the welding torch assembly, the partially lock state allows for rotation of the gooseneck without allowing for removal of the gooseneck, and the electrical connection provides electrical conduction via a conduction member that is independent form the locking features of the welding torch assembly.

The present invention relates to a burning apparatus for railway repair, defining an axis (P) and comprising: an air compressor assembly (2) including an inlet opening (20) and an outlet opening (21), and a combustion assembly (3) connected to the outlet opening (21) of the air compressor assembly (2), wherein the air compressor assembly (2) and the combustion assembly (3) are axially disposed along the axis (P), and wherein the air compressor assembly (2) compresses air into the combustion assembly (3).

The present invention relates to a burning apparatus for railway repair, defining an axis (P) and comprising: an air compressor assembly (2) including an inlet opening (20) and an outlet opening (21), and a combustion assembly (3) connected to the outlet opening (21) of the air compressor assembly (2), wherein the air compressor assembly (2) and the combustion assembly (3) are axially disposed along the axis (P), and wherein the air compressor assembly (2) compresses air into the combustion assembly (3).

The invention relates to a method for the autogenous processing of metals, in which a hydrogen as a fuel gas from a fuel gas source and oxygen as an oxidising agent from an oxidising agent source are brought together in a processing tool and a flame used to process a workpiece is generated in front of an opening in the processing tool, characterised in that a combustible carbon-containing additive gas is added to the fuel gas in the processing tool, which is burned together with oxygen in a luminous flame.

The invention relates to a method for the autogenous processing of metals, in which a hydrogen as a fuel gas from a fuel gas source and oxygen as an oxidising agent from an oxidising agent source are brought together in a processing tool and a flame used to process a workpiece is generated in front of an opening in the processing tool, characterised in that a combustible carbon-containing additive gas is added to the fuel gas in the processing tool, which is burned together with oxygen in a luminous flame.