you could be right Rob. Just need a pic to confirm.
http://gluedideas.com/content-collection/Encyclopedia-Britannica-Volume-14-Part-1-Libido-Hans-Luther/Illuminants_P1.html
Oil lamps with flat wicks were used in the Liverpool lighthouses as early as 1763. Argand, between 1780 and 1783, perfected his cylindrical-wick lamp which provides a central current of air through the burner, thus allowing the more perfect combustion of the gas issuing from the wick. The principle of the multiple-wick burner was devised by Count Rumford. Fresnel produced burners having two, three and four concentric wicks. Sperm oil was used in English lighthouses until 1846, but about that year the much cheaper colza oil was employed generally. Olive, lard, and cocoanut oils have also been used for lighthouse purposes in various parts of the world.
The introduction of mineral oil, costing a mere fraction of the expensive animal and vegetable oils, revolutionised the illumina tion of lighthouses. It was not until 1868 that a burner was devised which successfully consumed hydro-carbon oils. This was a multiple wick burner, invented by Captain Doty, which was quickly taken into use by lighthouse authorities. The “Doty” burner, and other patterns involving the same principle, remained practically the only oil burners in lighthouse use until the last few years of the i9th century.
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