of Corporation Street, Sheffield
c.1814 The original lead business was established.
1901 Eclipse patent roof glazing used in construction of railway stations
1903 Private company.
1914 Sanitary engineers and experts, lead pipe and steel sash manufacturers. Specialities: "Eclipse" patent roof glazing, lead pipes and pneumatic organ tubes, metal casements, steel sashes. 
1936 Company made public.
1961 Glazed roofing and metal window manufacturers, makers of Eclipse and Alumell patent glazing, metal windows, lantern and roof lights; Melloclad curtain walling; Mellwall panelling and partitioning; Mellozing metal spraying; Mellopad anti-vibration materials and Mellothene polythene. 
1968 Pillar closed 3 loss-making metal window companies including that of Mellowes and Mellowes Luxfer