George Hunter (of Arbroath)
George Hunter of J. and G. Hunter, inventor and patentee of stone-cutting machinery.
He was the son of James Hunter (of Arbroath)
1859 Wrote to The Engineer about labour saving machines used for stone cutting in various parts of the country; Hunter was at Coleford at the time[1]
1866 Machines were invented by Mr. George Hunter (then resident near Caernavon) for cutting large blocks of stone and slate into slabs. Since then the machinery of Messrs. Hunter and Co. was used in the Caernarvon and other slate quarries; the machines were also adopted by the Tyne Harbour Improvement Commissioners at Newcastle.[2]
1871 George Hunter, in conjunction with Sir William Cooke (partner with Sir Charles Wheatstone) had devised a system of machinery for working stone, slate, and other minerals, beginning at the quarry, and carrying out every operation systematically up to the most ornamental work for building purposes.
See here for I. G. Isherwood's excellent account of the life and work of James and George Hunter.[3]