Atomizers

An atomiser of the recirculating type for liquid fuel, which comprises support means, tubular body means having an outer tubular member and an inner tubular member mounted on said support means, said outer and inner members defining a flow path therebetween, orifice means defining a discharge orifice at one end of said body means;

• a lance located in said inner tubular member of said body member and having at a front end thereof a tip engageable against said orifice means to shut off said discharge orifice;
• said inner member and said lance defining a flow path therebetween;
• and carrier means mounted in a rear end of said inner member and supporting said lance at a rear end thereof for endwise movement of said lance relative to said body means;
• wherein the improvement comprises an electrical circuit means which comprises indicator means and which is partly formed by said body means and said lance, said carrier means comprising insulator means electrically insulating said lance at said rear end from said body means, said circuit means being completed to activate said indicator means by engagement of said orifice means upon endwise movement of said lance to shut off said orifice.