Landau’s No 1 Patent 1874. This is the most complicated lamp I have come across.
All brass, top domed with multiple stepped circular vent rings under to dissipate heat. Three brass bars above and six brass bars below. Solid brass tubular chimney shield with sliding shut off at top. Notice the bayonet fitting slots on the lower glass ring and the extinguisher trip tapered cut away. Inside the shield is a copper gauze within which is a copper sheet perforated tube and cap. Inside these is a mica sheet double folded circular shield. Thick small diameter glass supported on screwed brass glass ring.
Nice brass badge to vessel. Air vent holes on top of vessel draws air into circular chamber within. Three gauze covered circular vent holes let air into burner under chamber. There is a small domed oil container that is secured by pins and a bayonet ring housing at the bottom. Small burner and screwed ring. One half of shut off flaps hinged on top of oil vessel. The other flap is sprung loaded to down position, but is held back with a sliding brass square housing with tongue across flap bar. When the super structure of the lamp is turned into the bayonet housing, the tapered cut out slides across a small spring steel tongue and then the tongue springs up into the tapered cut out. When the super structure is undone out of the bayonet fixing, the cut out slot engages with the spring steel tongue and slides the square brass housing and hold back tongue off the flap bar. The flap springs down and meets the other half of the shut off flap and extinguishes the flame.
25cms tall, 9 cms diameter.
All quite complicated and delicate, a small reserve of oil and air vent holes liable to blocking with debris and dust, makes this lamp quite impractical.
Only one known. Value £15,500 plus.






















Landau’s No 2 Patent 1874. Another complicated lamp but not as bad as No1 patent.
All brass, top domed with multiple stepped circular vent rings under to dissipate heat, nice leaf engraving decoration on top. Three steel bars above and six steel bars below. Solid brass tubular chimney shield with vent holes half way down chimney and half height sliding shut off. Inside the shield is two copper gauzes. Thick wide diameter glass supported on screwed brass glass ring. Notice the side screw lock has a lead rivet security feature and a brass security flap from the underplate which is also captured by the screw.
No badge or stamp to vessel. Normal sized burner with screwed ring and Oil resavoir is incorporated in centre of vessel. Standing base plate with vessel stood up on three pillars allows air to gauze covered air vent hole on underneath centre of vessel to draw air into a small circular chamber above, then through four gauze covered circular vent holes let air into burner area.
24cms tall, 8 cms diameter.
All quite complicated and a small reserve of oil, makes this lamp also impractical.
Only two known. Value £9,500 plus.