Roller skates Roller skates Roller skates are shoes, or bindings that fit onto shoes, that are worn to enable the wearer to roll along on wheels. The first roller skate was effectively an ice skate with wheels replacing the blade. Later the "quad" style of roller skate became more popular consisting of four wheels arranged in the same configuration as a typical car. While the first reported use of roller skates was on a London stage in 1743, the first patented roller skate was introduced in 1760 by Belgian inventor John Joseph Merlin. His roller skate wasn't much more than an ice
Ezra Warner (inventor) Ezra Warner (inventor) Ezra J. Warner of Waterbury, Connecticut was an American inventor, who patented his design of a can opener in 1858. Crudely shaped bayonet and sickle combo, his design was widely accepted by the U.S. military during the period of the American Civil War. Can openers were needed because early cans were robust containers, which weighed more than food and required ingenuity to open, using whatever tools available. The instruction on those cans read "Cut round the top near the outer edge with a chisel and hammer." The bayonet part of Ezra Warner's can opener was pressed into