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John Petrie, Junr., Ltd. of River Street Ironworks, Rochdale
Presumably the business of John Petrie, Junior
1867 Advert 'WOOL WASHING MACHINE, with new patent automaton Lifter, now exhibiting at the Leeds Industrial Exhibition, Music Hall. Cheetham's patent Turbine made by John Petrie, jun., Rochdale.'
1888 Company incorporated
1917 Advert. 'Harrow' type machine for fine wools. Wool scouring and drying machinery etc. (John Petrie Junior of River Street Ironworks, Rochdale) 
1925 Voluntarily wound up