 One of the resolutions, calling for the right to vote for women, was seen by some as too radical, but was passed following a speech by Frederick Douglass, who also signed the declaration. And today is the birthday of Samuel Colt, born in Hartford, Connecticut in 1814, and founder of Colt's Patent Firearms Manufacturing Company. His use of the interchangeable parts concept made him one of the first to successfully utilize the assembly line concept.