Richard Roberts, Welsh mechanical engineer and inventor, c 1850.
© Science Museum / Science & Society Picture Library
Oil on canvas portrait (artist unidentified) of Richard Roberts (1789-1864). Roberts was responsible for devising a number of improvements to Henry Maudslay's screw-cutting lathe, and later designed improvements to Samuel Crompton's original spinning mule. He built one of the first metal-planing machines, and in partnership with Thomas Sharp, manufactured railway locomotives.