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Isaac Wilkinson (1695-1784) was an English industrialist, one of the founders of the iron industry and pioneer of the Industrial Revolution.
1695 May 6th. Wilkinson was baptised in Washington, then in County Durham. He was the fifth child of John Wilkinson and his wife, Margaret Thompson. His mother died soon after his birth and his father in 1704, leaving him to be brought up by his elder brother John, a wool merchant.
He seems to have received some basic education before being apprenticed a foundryman, probably at the nearby Swalwell Works. There, he established himself as a highly skilled iron-worker, able to demand high wages
Some time between 1721 and 1723, Wilkinson moved to Workington where he worked at the Little Clifton Furnace which produced cast iron by smelting with coal and with charcoal. Here Wilkinson operated as a specialist subcontractor to the furnace.
1727 November 9th. Described as iron-founder, he married Mary Johnson (d. 1786), daughter of Henry and Margaret Johnson of Briggham, Cumberland. She was a dissenter, and Wilkinson is henceforward referred to as a Presbyterian. Their seven children included the ironmasters John Wilkinson and William Wilkinson, and Mary (1743–1796), who later married the theologian and natural philosopher Joseph Priestley (1733–1804).
1735 He moved to Backbarrow Furnace, smelting with coke, buying iron from the firm and selling his own produce
1738 Age 43. He patented a cast box smoothing-iron though it is suspected that he already knew that it was invalid owing to prior art. He went into production in partnership with his brother John but indulged in "creative accounting" to cheat his brother of the profits and the partnership folded. By now, Isaac was living in Cartmel, enjoying several business interests, including the Lowwood Iron Co. However, the Lowwood project ended in litigation when the weakness of his patent emerged and he accused the enterprise of poaching workers from his other enterprises
1753 Wilkinson moved south to Bersham, near Wrexham in Wales. There he operated a furnace, the Bersham Ironworks, with his son John Wilkinson, Edward Blakeway and others. Wilkinson developed the business while maintaining his own subcontracted casting business.
Another patent in 1757 was for a blowing-engine for blast furnaces, using columns of water similar to the trempe system, though it is uncertain how effective it was. Blakeway was declared bankrupt in 1759, his shares passing to Mary Lee who married John Wilkinson in 1763. This gave the Wilkinsons control of Bersham and the business flourished.
Isaac patented a novel moulding process in 1758. Isaac's personal subcontract business was a source of continued tensions. Litigation against his partners, including his son, had started as early as 1762, being exacerbated by the slump in Bersham's business following the end of the Seven Years' War in 1763 when demand for armaments dried up.
Isaac moved to Bristol and John ended up as the owner of the Bersham works
Isaac became a foundryman in Bristol with involvement in the South Wales Dowlais Ironworks and Cyfarthfa Ironworks, and starting the Plymouth Ironworks with John Guest. Disputes with coal suppliers at Cyfarthfa led to further legal action but Isaac's finances were becoming precarious.
From the 1770s he was involved in further litigation, including, again, against his son John
1784 January 31st. He died in London but was probably buried at Bristol