Welding welding was invented in 1893, and around that time another process, oxyfuel welding, became well established. Acetylene was discovered in 1836 by Edmund Davy, but its use was not practical in welding until about 1900, when a suitable torch was developed. At first, oxyfuel welding was one of the more popular welding methods due to its portability and relatively low cost. As the 20th century progressed, however, it fell out of favor for industrial applications. It was largely replaced with arc welding, as advances in metal coverings (known as flux) were made. Flux covering the electrode primarily shields the base
USS Relief (1836) USS Relief (1836) The first USS "Relief" was a supply ship in the United States Navy. "Relief" was laid down in 1835 at the Philadelphia Navy Yard and launched on 14 September 1836. Designed by Samuel Humphreys, she was built along merchant vessel lines and included trysail mast and gaffsail on all three masts to enable her to work to windward in strong winds. Her hull was pierced for 16 small guns, but she usually carried only four to six 18-pounder and two 12-pounders. In early December 1836, "Relief", commanded by Lieutenant Thomas A. Dornin, left Philadelphia for Norfolk, Virginia