Jean-François Cail was a French

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 entrepreneur

Entrepreneur

An entrepreneur is an owner or manager of a business enterprise who makes money through risk and initiative.The term was originally a loanword from French and was first defined by the Irish-French economist Richard Cantillon. Entrepreneur in English is a term applied to a person who is willing to...

 and industrialist who was a key figure in French industrialization. He started his career in 1824 as a factory worker making machinery for the sugar industry. The firm expanded and was renamed Derosne-Cail in 1832. It manufactured a variety of industrial machines. In 1848 Mr. Cail licensed the patents of Thomas Russell Crampton

Thomas Russell Crampton

Thomas Russell Crampton, MICE, MIMechE was an English engineer born at Broadstairs, Kent, and trained on Brunel's Great Western Railway....

and began manufacturing Crampton locomotives as well. Having become a wealthy man, Mr. Cail built a luxurious townhouse in Paris that is used today by the city government. A street in Paris is also named after him, Rue Cail. Additionally, his name is among in the 72 names engraved on the Eiffel Tower by Gustave Eiffel, in recognition of his contributions to the project.