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1859 Patent to Thomas Aldridge Weston, of King's Norton, Accountant, for the invention of "a new or improved pulley.", followed by many more patents over the next 20 years.
1864 Weston assigned his patent for the differential pulley to Tangyes, who later defended it successfully in a court action.
1867 of 29 Graham St, Birmingham, when he joined the Inst of Mechanical Engineers
By 1872 Weston was in New Jersey, USA
1877 Weston was in Stamford, Conn., USA
Obituary 1909 
WE have to record with regret the death of Mr. Thomas Aldridge Weston, which occurred on May 3rd at St. Luke's Hospital, New York. Mr. Weston, who was born in Birmingham in 1832, was the inventor of the Weston differential pulley block, and he was also responsible for various other improvements in connection with mechanical engineering work. Weston pulley blocks are manufactured in England by Tangye Brothers and in America by Yale and Towne and Co., and by the Brown Hoist Company, of Cleveland, Ohio. For many years Mr. Weston was associated with the former American company.