By 1842 John Marshall owned four mills in Holbeck. They were known as Mills B to E, Mill A having been demolished in 1837. The early 1830s had been a time of great prosperity for the firm after the introduction of the wet spinning process in 1829, the transition to which took five years to complete. John Marshall's four sons all entered the business, but increasingly he relied on his son James concerning the manufacturing side. The firm's competitors in Leeds were all prospering and had built or had plans to build sizeable new mills. The firm at that time specialised in making fine yarns, principally for the French market, but this was starting to decline. Therefore, James Marshall decided upon a programme of diversification into thread and cloth manufacture. This decision to diversify required an extension to the manufacturing facility in Holbeck. James had two alternative plans, another six storey mill on the site of the demolished Mill A in Water Lane, or a single storey building extending from Mill C in Marshall Street south to the junction with Sweet Street. He compared the cost of the two mills and calculated the single storey structure would cost £24,000, about 15% cheaper than a comparable six storey building. The new building was modelled at one third the full size in the yard of Mill C. James persuaded his father, then in semi-retirement, that the single storey mill should be built. A Mr Smith had already built the first single-storey cotton mill in Deanston, near Stirling, but Messrs. Marshall planned a much larger and complete specimen. regulator on display in
Science Museum, London Temple Works, also known as
Temple Mill, comprises an office building and a factory. The office building has a stone facade consisting of 18 full-height windows separated by 18 pillars with an overhanging cornice in the Egyptian style, based on the temple at
Antaeopolis and the
Temple of Horus at
Edfu. The factory building derived from the
Typhonium at
Dendera. There was a chimney in the style of an obelisk, but after it developed a crack it was demolished and replaced by a brick structure in 1852. Hick's engine was modelled with
Egyptian details, including a
regulator designed by his son
Benjamin in the form of a winged
solar disk, and replaced the original
Watt engines. Sheep are not able to use stairs so the first
hydraulic lift was devised in order to resolve the problem of moving them onto the roof; Hick was a
hydraulics engineer, but it is not clear whether he was responsible for the invention, his youngest son,
William Hick (1820–1844) supervised the installation of the 'Egyptian' beam engine from Leeds during 1841. ==1842 General Strike==