Charles Talbot Porter

Charles Talbot Porter (1826-1910)
Charles T. Porter was an American lawyer, engineer and inventor.
See Wikipedia entry and obituary in the American Machinist.
1866 He worked with Whitworth and Co, Chorlton Street, Manchester.[1]. He described his unsatisfactory experience of working with Whitworth's to develop his Porter-Allen high speed engine in his Engineering Reminiscences. He had more luck working with Ormerod, Grierson and Co.
He returned to the USA and established his own engine manufacturing business.