The first practical typewriter was invented by Latham Sholes in 1867. Sholes had for partners S. W. Soule and Carlos Glidden, but these two men became discouraged and dropped out. It wasn't till some years later that Sholes got his machine ready for the market. Then he took it to a big firm of gunmakers, the Remingtons, and it at once began to sell on a large scale. Sholes remained in the employ of the Remingtons up to the time of his death. -- "History of the Typewriter", The Elyria Chronicle Daily (Elyria, Ohio), Vol.3, No.660 (August 18, 1906), p.8, l.2.
Mr. Carlos Glidden didn't drop out of inventing "Type Writer". He kept in touch with Mr. Christopher Latham Sholes, and he kept improving "Type Writer" (cf. U. S. Patent No.200351). However, Mr. Glidden was ill and deceased on March 11, 1877. It was Mr. James Densmore, the attorney of Mr. Sholes, and Mr. George Washington Newton Yost that took "Type Writer" to E. Remington & Sons in February, 1873 (cf. The Story of the Typewriter 1873-1923, Herkimer County Historical Society, Herkimer (1923)). Then Messrs. Densmore and Yost founded The Type Writer Company to secure the patents of Mr. Sholes, so that Mr. Sholes didn't directly contact with Remington people (cf. U. S. Patent No.182511). Mr. Sholes had never been in the employ of Remington until his death on February 17, 1890 (cf. "Mr. Sholes Dead", The Milwaukee Sentinel, No.15692 (February 18, 1890), p.1, l.7). After his death, some of his patents were assigned to Wyckoff, Seamans & Benedict, the parent company of Remington Standard Type-Writer Manufacturing Company (cf. U. S. Patent No.568630).