Greaves Etchells Co
of Sheffield, makers of electric furnaces.
Henry Arnold Greaves and Henry Etchells were two Sheffield engineers who spent many years investigating conductive hearths and bottom electrodes in furnaces
1917 Patent on "Improvements in Electrically Heated Resistance Furnaces."
1917 Patent on " Improvements in the Manufacture of Steel."
1917 Patent on " Improved Method of Converting Iron Ores Directly into Steel."
1917 Patent by T. H. Watson and Co on "Improved Electric System for Electric Furnaces" with Henry Arnold Greaves, electrical engineer, and Henry Etchells, metallurgical engineer.
1918 Patent by T. H. Watson and Co on "Improvements in Electric Furnaces" with Henry Arnold Greaves, electrical engineer, and Henry Etchells, metallurgical engineer.
1918 Furnaces made by T. H. Watson and Co