A pyrophoric gas lighter comprises a head that slips over the hollow valve stem of a replaceable can of inflammable fluid under pressure. The valve stem is of the type that slides axially to open and close the valve. The head carries a burner that communicates with the valve stem, and a striking wheel that strikes against a flint to ignite gas issuing from the burner. Pressure on the head in the direction of the container simultaneously strikes a spark and opens the valve by depressing the valve stem that carries the lighter head. In one embodiment, the pressure of the thumb on the wheel moves the head; while in another embodiment, the pressure on the head rotates the wheel through a ratchet mechanism.
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