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Heaton and Dugard Ltd of Shadwell Street Mills, Birmingham.
1840 Company established - presumably in succession to Heaton Brothers
1858 Heaton and Dugard, manufacturers of wire, mouldings, window bars, etc 43 Shadwell St.
1867 Death of long-term employee. 'On the 28th ult., at his residence, High-street, Aston New Town, Mr Thomas Stanley, for forty-eight years in the confidential employ of the late Mr Ralph Heaton and the present firm, of Shadwell-street Mills.'
1876 Advert: Late George Heaton
1902 Brass and copper wire. 
1909 Incorporated as a limited company.
1911 Manufacturer of Brass Lap and Fence Plates for the Railways.
1914 Metal rollers, wire drawers, manufacturers of metal mouldings and sash bars, jack, chains and bent wire articles. Specialities: brass, bronze and copper sash bars, mouldings etc., hooks and eyes, curtain hooks, drawn and rolled, shaped and fancy wires. 
1937 Metal rollers and wire drawers. 
1938 Advert - 'Incorporated with The Delta Metal Co Ltd.
1940 Land Registry. 'Shadwell Street Mill, Birmingham, Warwick, by Heaton and Dugard Ltd'.