and was soon in full production (Subsequently, Conn and Del Crampton became best of friends, and when Conn embarked on his political career, he was a staunch advocate of temperance). Conn patented his rubber-rimmed mouthpiece in 1875 (with patents to follow through 1877) described as "an elastic face [i.e., a rubber rim] where the mouthpiece comes in contact with the lips, the object being to prevent fatigue and injury to the lips." Growth of Conn's musical instrument business Conn met Eugene Victor Baptiste Dupont, a brass instrument maker and designer and a former employee of Henry Distin of London. In January 1876, Conn joined with Dupont under the name of Conn & Dupont, and Dupont created Conn's first instrument, the Four-in-One cornet, with crooks allowing the horn to be played in the keys of E♭, C, B♭, and A. By 1877, Conn's business had outgrown the back of his grocery store, and he purchased an idle factory building on the corner of Elkhart Avenue and East Jackson. Conn's partnership with Dupont was dissolved by March 1879, but he was successful in attracting skilled craftsmen from Europe to his factory, and in this manner he expanded his operation so that by 1905, Conn had the world's largest musical instrument factory producing a full line of wind instruments, strings, percussion, and a portable organ. Conn partnered with Albert T. Armstrong, Joseph Jones, and Emory Foster to manufacture a twin-horn disc phonograph called the 'Double-Bell Wonder' that was produced in two iterations briefly in early 1898 before a lawsuit by the Berliner Gramophone Company caused production to cease. Brick-red 'Wonder' records were also pressed for the 'Double-Bell Wonder' talking machine by the Scranton Button Works from pirated Berliner masters. Fewer than fifty 'Double-Bell Wonders' were produced of both iterations combined. Conn's first factory was destroyed by fire on January 29, 1883 (his thirty-ninth birthday), and he erected a new building on the same site. In 1886 rumors began to circulate that Conn wanted to move his business to Massachusetts. Conn was induced to stay after the public raised a large sum of money by popular subscription and gave it to him. In 1887 Conn purchased Isaac Fiske's brass instrument manufactory in Worcester, Massachusetts upon Fiske's retirement. Fiske's operation was considered to be the best in its time. Conn operated it as a company subsidiary, and in this way he achieved his objectives. The