Hiram Barker
Born in 1819 in Todmorden
1841 Living with parents at Top of Fold, Royton. Occupation: labourer (as was his father)
1851 Machine maker, living at 8 Foster Street, Salford, with his wife (Sarah, born in Bolton) and children (Sarah A., William Abram, James Platt)
1853 Patent No. 1502 was granted to Hiram Barker of Manchester, Engineer and Tool Maker, and Francis Holt of Manchester, Engineer, for improvements in machinery and apparatus for grinding and turning metals. L. T. C. Rolt states that this was the first machine made for grinding metal balls [1]. Details (in German) here. The description gives an example of six 2" cast brass balls being 'ground sufficiently round in 6 to 7 hours to be used as valves for locomotive pumps'.
1856 Patent No. 1502 of 1853 became void [2]
Hiram Barker had died before the 1861 census
Partner in T. Fitton and Co