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
Charles W. Miner early twenties, Miner moved to Fort Wayne, where he resided for the remainder of his life and continued his career as a photographer. Miner married Mary S. Criswell, an Ohio native and resident of Fort Wayne, on November 28, 1905. The couple had two daughters, Sarah, who was born around 1908, and Mildred, born around 1912. After his move to Fort Wayne around 1887, Miner spent a few years working in the photography studio of Felix Schanz, "an established and influential Fort Wayne photographer," whose studio was located at 112 Calhoun Street. (The address was later changed to 922 Calhoun