cloth chintz (Catalan: indianes) was produced as an import substitution. The market quickly expanded to the American colonies from where dyes and (later) cotton raw materials could be sourced. Spinning was a late addition to the industry and took off after English spinning technology was introduced at the turn of the 19th century. Industrialisation of the industry occurred in the 1830s after adoption of the factory system, and the removal of restrictions by Britain on the emigration of expert labour (1825) and of machinery (1842). Steam power was introduced but the cost of imported coal and steam engines, led to the extensive use of hydraulic power from the late 1860s. Industrial revolution The woven fabric portion of the textile industry grew out of the industrial revolution in the 18th century as mass production of yarn and cloth became a mainstream industry. In 1734 in Bury, Lancashire John Kay invented the flying shuttle — one of the first of a series of inventions associated with the cotton woven fabric industry. The flying shuttle increased the width of cotton cloth and speed of production of a single weaver at a loom. Resistance by workers to the perceived threat to jobs delayed the widespread introduction of this technology, even though the higher rate of production generated an increased demand for spun cotton. In 1761, the Duke of Bridgewater's canal connected Manchester to the coal fields of Worsley and in 1762, Matthew Boulton opened the Soho Foundry engineering works in Handsworth, Birmingham. His partnership with Scottish engineer James Watt resulted, in 1775, in the commercial production of the more efficient Watt steam engine which used a separate condenser. In 1764, James Hargreaves is credited as inventor of the spinning jenny which multiplied the spun thread production capacity of a single worker — initially eightfold and subsequently much further. Others credit the invention to Thomas Highs. Industrial unrest and a failure to patent the invention until 1770 forced Hargreaves from Blackburn, but his lack of protection of the idea allowed the concept to be exploited by others. As a result, there were over 20,000 spinning jennies in use by the time of his death. Also in 1764, Thorp Mill, the first water-powered cotton mill in the world was constructed at Royton, Lancashire, and was used for carding cotton. With the spinning and weaving process now mechanized, cotton mills cropped up all over the North West