Safety lamp it. Air is drawn in and descends just inside the glass, passing up through the flame in the centre of the lamp. The outer casings of lamps have been made of brass or tinned steel. If a lamp bangs against a hard piece of rock a spark could be generated if iron or untinned steel were employed. Within months of Clanny's demonstration of his first lamp, two improved designs had been announced: one by George Stephenson, which later became the Geordie lamp, and the Davy lamp, invented by Sir Humphry Davy. Subsequently, Clanny incorporated aspects of both lamps and produced
Eliphalet S. Miner Eliphalet S. Miner Eliphalet S. Miner was a member of the Wisconsin State Assembly and the Wisconsin State Senate. Miner was born on March 20, 1818 in Madison, New York. He settled in what is now Grand Rapids, Wisconsin in 1841 before moving to Necedah, Wisconsin in 1850. There, he went into the lumber business with John T. Kingston. Miner died on February 9, 1890. Miner was a member of the Assembly from 1865 to 1866. In the Senate, he represented the 9th District in 1871 and the 29th District in 1872. Other positions he held include Postmaster of Grand