William Murdoch (Edited from Wikipedia) SUMMARY William Murdoch (sometimes spelled Murdock) (21 August 1754 – 15 November 1839) was a Scottish engineer and inventor. Murdoch was employed by the firm of Boulton and Watt and worked for them in Cornwall, as a steam engine erector for ten years, spending most of the rest of his life in Birmingham, England. Murdoch was the inventor of the oscillating cylinder steam engine, and gas lighting is attributed to him in the early 1790s, also the term "gasometer". Murdoch also made innovations to the steam engine, including the sun-and-planet gear. He invented the steam gun and the pneumatic tube message system, and worked on one of the first British paddle steamers to cross the English Channel. Murdoch built a prototype steam locomotive in 1784 and made a number of discoveries in chemistry. Murdoch remained an employee and later a partner of Boulton & Watt until the 1830s, and his reputation as an inventor has been obscured by the reputations of Boulton and Watt and the firm they founded. HISTORY William Murdoch was born in Lugar near Cumnock, East Ayrshire, Scotland, the third of seven children and the first son to survive beyond infancy. A son of John Murdoch, a former artillery gunner and a Millwright and tenant of Bello Mill, he was educated until the age of ten at the Old Cumnock Kirk (Church) School. He then began attending Auchinleck school under William Halbert, author of a highly regarded arithmetic textbook. Murdoch excelled in mathematics. Murdoch also learned the principles of mechanics, practical experimentation and working in metal and wood by assisting in his father's work. Together with his father, he built a "wooden horse" about 1763. His "Wooden Horse on Wheels" was a tricycle propelled by hand cranks. There are reports that in his youth Murdoch was responsible for the construction of one of the bridges over the River Nith; this possibly derives from his father's work in building the Craikston Bridge 1 over Lugar Water in 1774, which William would have been involved in. He is also said to have carried out experiments in coal gas, using coal heated in a copper kettle in a small cave near his father's mill. In 1777, at age 23, Murdoch walked to Birmingham, a distance of over 300 miles, to ask for a job with James Watt, the steam engine manufacturer. Both Watt and Murdoch were probably aware of each other because of their connections with James Boswell, who had made several visits to Watt's workshop at Soho. Watt's partner Matthew Boulton was so impressed by Murdoch's wooden hat, made on a lathe of his own design, that he hired him. Murdoch began his career with Boulton and Watt in the pattern workshop of their Soho Foundry, making patterns for the casting of machine parts. He Anglicised his name to "Murdock" when he settled in England. Murdoch progressed to work in fitting and erecting steam engines and was often sent from Soho for this purpose. On his first solo job erecting an engine at a mine, Murdoch made the first of many improvements to the standard Boulton and Watt engine by rearranging the gears to enable the steam valve to be worked automatically by the action of the exhaust shaft. LATER INNOVATIONS In September 1779 Murdoch was sent to Redruth in Cornwall as a senior engine erector, responsible for the erection, maintenance & repair of Boulton & Watt engines. These were used for pumping water out of the Cornish Tin mines. The efficiency and efficacy (effectiveness) of the engines was an important factor in the amount of tin, and money, which could be extracted from a mine. At that time steam engines were not simply sold to customers but operated, and maintained by the builders for groups or individuals known as 'adventurers' (shareholders). The engine manufacturers were paid not for a completed engine but through a complex formula calculated on the basis of that engine's performance. Therefore, Murdoch's skill in getting the most out of his engines directly impacted upon Boulton and Watts profits. Due to the frequent problems which could occur with steam engines Murdoch was kept busy traveling around the area repairing and attempting to improve the performance of the engines under his care. 2 GAS LIGHTING The key invention for which Murdoch is best known is the application of gas lighting as a replacement for oil and tallow produced light. It was in 1792 that he first began experimenting with the use of gas, derived from the heating of coal and other materials, for lighting. Many believe this experimenting took place in a cave. To use gas for practical purposes it was first necessary to develop a working method for the production and capture of the gas. There is considerable doubt as to the date by which this process was perfected. However, numerous accounts exist that by 1794 Murdoch was producing coal gas from a small retort containing heated coals with a three or four-foot iron tube attached, through which he piped the gas before sending it through an old gun barrel and igniting it to produce light. Over the next few years Murdoch performed "a series of experiments upon the quantity and quality of the gasses contained in different substances" and upon the best way of transporting, storing, purifying and lighting these. It is known that Murdoch occasionally used his gas as a portable lantern. In 1798 Murdoch returned to Birmingham to work in the Soho foundry and continued his experiments with gas. He lit the interior of the Soho main building, although it is likely that it was lit only in part and not (at this time) permanently. In 1802 as part of the public celebrations of the Peace of Amiens he made a public demonstration of his lighting by illuminating the exterior of the Soho Foundry. The first industrial factory to be illuminated by gas was the Philips and Lee cotton mill in Manchester, which was fully lit by Murdoch in 1805, four years after the idea was first broached. Initially this mill contained 50 gas lights, although this soon grew to 904. The length of time taken to complete this project was partly due to experimentations and improvements in the process developed by Murdoch. Murdoch experimented to make the lighting of a large factory by gas practicable and cost effective – such as purifying the gas with lime to remove the smell and determining the best temperature to heat coal to obtain the maximum quantity of gas. Murdoch continued to be involved in other engine work for Boulton and Watt, which took up much of his time. 3.