John Rylands manufacturers, and about the same time they erected a new spinning mill. The Ainsworth mills, near Bolton, and other factories were subsequently acquired. Joseph and Richard retired around 1839 and the death of their father in July 1847 made John Rylands sole proprietor. The business continued to expand and in 1849 a warehouse was opened in Wood Street, London. A great fire occurred at the Manchester warehouse in 1854 but the loss, although very large, was speedily repaired. By 1864 the warehouses were seven storeys high and extended all the way along New High Street (now High Street) in Manchester:
Rylands v Fletcher leading to the development of negligence and nuisance and the further development of trespass. At the time of "Rylands", the previous case relied upon was "Vaughan v Menlove", decided in the Court of Common Pleas in 1837. The case had almost identical facts to "Rylands", but strict liability was never even considered. The case is instead thought of as one of the best attempts of early 19th century English judges to build up the law of negligence. The outcome of "Rylands" meant that judges would again impose strict liability on defendants who accumulated dangerous things on their land without any