Author Archives: Susan Mossman

Alexander Parkes – Materials Man and Polymath

Sue Mossman explores the life of Alexander Parks, inventor of early plastics, on his 200th birthday.

Alexander Parkes was born in Birmingham on 29th December 1813. In his early career he described himself as an artist, and only later a chemist. He might also have described himself as a metallurgist.

A decorative metalworker by training, Parkes was to turn his sharp intelligence towards a variety of old and new materials in the burgeoning industrial world of mid-19th-century Britain. His life was an active one – he was granted 80 patents. He also found time to father 17 children with two wives, his second wife being the friend of his eldest daughter.

Alexander Parkes, inventor of the first synthetic plastic, 1848.

Alexander Parkes, inventor of the first synthetic plastic, 1848.

Parkes had a varied and successful career in metallurgy, working on a number of processes, including the desilverising of lead – known as the Parkes process. While employed at Elkington, Mason and Company in Birmingham, he developed a process for electroplating works of art and later fragile natural objects. The epitome of this technique was a silver-plated spider’s web presented to Prince Albert.

Parkes is perhaps best known for the eponymous Parkesine – the first form of celluloid – an early semi-synthetic plastic based on gun cotton. He took out his first related patent in 1855. Parkes later won a bronze medal for excellence of product in the International Exhibition of 1862 and later a silver medal at the Paris Universal Exhibition in 1867.

Objects made from Parkesine, c 1860.

Objects made from Parkesine, c 1860.

Henry Bessemer, of steel production fame, was a colleague of Parkes. Indeed Bessemer topped the list of the investors in the Parkesine Company set up in 1866, although the company failed in 1868 – probably because of issues associated with quality and flammability. Parkes, though a prolific inventor, was no businessman. We might see him as a victim of an agile but perhaps too busy mind, and of a strong moral conscience. When he developed a potentially lucrative explosive powder, he refused to sell it to the British, French or Russian governments.

In a letter written on 7 March 1881, Parkes rather plaintively remarked that: ‘In answer to the American Inquiry “Who Invented Celluloid” … I do wish the World to know who the inventor really was, for it is a poor reward after all I have done to be denied the merit of the invention.’

Celluloid, the direct descendant of Parkesine, became a great commercial success, used to make a range of decorative goods, often imitating the more expensive ivory, tortoiseshell and mother-of-pearl. Perhaps its most enduring legacy was its application in cinematic film. Parkes had foreseen the use of Parkesine film as a replacement for glass photographic negatives as early as 1856. Even he would have been amazed by the development of celluloid film and the birth of the Hollywood film industry.

Parkesine is a fragile material, subject to degradation by light, so is seldom put on display. But from December 2013 to mid 2014 a selection of objects made from this beautiful and rare semi-synthetic plastic can be seen at the Science Museum, together with other items associated with the life and works of Alexander Parkes.

‘Onward Ever’ – Sir Henry Bessemer 19.1.1813 – 15.3.1898

Sir Henry Bessemer, British inventor and engineer, 1880 ( Science Museum / Science & Society Picture Library )

Sir Henry Bessemer’s motto summed him up – one who strived, faced and overcame obstacles to achieve a number of successes. These culminated in the invention of his process for the bulk production of steel in 1856. This development was to prove massively significant in the extension of the railways and in large construction.

Bessemer, born 200 years ago this month, sought the key process that would allow him to live in the lap of luxury.  His father, Anthony Bessemer, also a successful inventor, encouraged his son’s interest in things mechanical and gave him the freedom to explore his own ideas from the early age of 17.

Early in his career, Henry Bessemer made a fortune from his mechanised process for making bronze powder, previously made in a laborious manual process fiercely protected in Germany, and sold at a high premium. Bessemer took great steps to maintain secrecy, including employing his three brothers-in-law to oversee manufacturing.

Later, Bessemer applied himself assiduously to a method for producing good quality malleable iron in quantity, and eventually high quality steel. On 24 August 1856 he presented his method to the British Association for the Advancement of Science in a paper entitled “The Manufacture of Iron without fuel”.  Later he commented that he should have waited until the process was reliable. He had to overcome early problems with poor quality steel due to high quantities of phosphorus in the iron ore used – an issue later resolved by Sidney Thomas Gilchrist. Robert Mushet also offered improvements to the process by his numerous experiments to control the amount of carbon in iron ore. Although Bessemer rejected his claims, he agreed to pay Mushet an annual pension of £300 a year for an undisclosed reason – perhaps to avoid troublesome litigation.

Pilot Bessemer converter, 1865 ( Science Museum / Science & Society Picture Library )

Despite the Bessemer process rapidly gaining international recognition, notably in France, Belgium and North America, Bessemer had a tougher time gaining in acceptance in Britain, in particular with the War Office and the Admiralty.

Never one to let a perceived injustice or lack of recognition go without a fight, in 1878 Bessemer wrote to the Times and to the entire cabinet, including the Prime Minster, Lord Beaconsfield, about his important role, in 1833, of inventing a way of stamping state documents that could not be open to fraud. His contribution was finally recognised with a knighthood conferred by Queen Victoria in 1879.

Bessemer and the Royal Family, Sheffield, South Yorkshire, 1875 ( Science Museum / Science & Society Picture Library )

As to his invention of the Bessemer process for bulk production of steel – it seems inevitable, understanding his character of steely determination combined with hard work, wide experience and enormous intellect, that he would be able to look at an area outside his direct area of expertise, approach it with an open mind, not be hidebound by received practice, and finally find a satisfactory solution which was to have a worldwide impact