John Joseph Merlin he wheeled about himself, with great facility to any part of the room." At an event held by Teresa Cornelys in Carlisle House, Soho Square, Merlin appeared somewhat disastrously on roller skates of his own invention. By April 1783 Merlin was putting his musical instruments and his automatons on display at his own museum. Advertisements invited readers to visit his Museum of Musical Instruments and Mechanical Inventions at No. 2, Princes Street, Hanover Square, London. Well-off Londoners could meet their friends at Merlin's Mechanical Museum in the afternoon or evening, pay to see the exhibits, and drink tea or coffee
Ezra Warner (inventor) the can, and a metal guard kept it from penetrating too far into the can. The other part was the sickle, which was forced into the can and sawed around the edge. However, Warner’s can opener was not a tool for domestic use, because it could be dangerous. Grocers opened the cans before they left the store. The first widespread domestic can opener was patented by William Lyman. 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