With inventions of new energy resources and technology, the lamp structures evolved too. The first commercial usage of coal gas was in the last decade of the 18th Century. Coal gas was transported to the place of consumption by pipes and led into the lamps.
19th Century witnessed the innovation of Kerosene Lamps. These lamps were invented in Germany. The kerosene Lamps has a straightforward mechanism, it consisted of container with kerosene in it.