This man briefly set up a factory on the Thames after wowing visitors at the Crystal Palace exhibition with interchangeable parts.  
This man sometimes added a "u" to the spelling of his last name to give lectures on laughing gas.  In 1842, this man's brother John murdered a man, chopped up the body, and then tried to ship the parts to New Orleans, but was found out when a shipping delay caused the corpse to rot.  He operated a factory in Paterson, New Jersey and may have stolen the design for the invention that made him famous from John Pearson of Baltimore.  In 1843, he secured a sizeable payment from the government for making tin-foil lined (*) cartridges.  This man briefly set up a factory on the Thames after wowing visitors at the Crystal Palace exhibition with interchangeable parts.  Sam Walker of the Texas Rangers insisted that his force be supplied by this man's namesake company, since that product was capable of firing multiple rounds without being reloaded.  For 10 points, name this man who invented a namesake revolver.
This man sometimes added a "u" to the spelling of his last name to give lectures on laughing gas.  
Samuel Colt