In 1869, Charles Goodyear Jr. (the son of Charles Goodyear, who had invented the rubber vulcanization process) filed a patent for a welt sewing machine. This technique, which is called "original Goodyear welt", develops from 1875-1876. However, it is often forgotten that in 1862, Auguste Destouy obtained a patent for a machine for sewing a leather sole using a curved needle. Charles Goodyear Jr.'s patent was ultimately the perfecting of Auguste Destouy's process, created more than 150 years ago!
The Goodyear construction is over 150 years old!