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Bourne, Bartley and Co of Mayor Street, Manchester were machinists between 1838 and 1840.
Possibly built a locomotive 
1839 Bourne, Bartley & Co advertised 'A locomotive for sale with six of their patent wheels, now undergoing a most satisfactory trial on the Liverpool and Manchester Railway' 
1841 Pigot & Slater's Directory of Manchester & Salford, 1841 does not link Bourne and Bailey as a company, but gives the following information: John Frederick Bourne, engineer, house 25 New York Street; John Bartley, engineer, house 37 Richmond Street