Josiah Spode (23 March 1733 – 18 August 1797) was an English potter and the founder of the English Spode pottery works which became famous for the high quality of its wares. He is often credited with the establishment of blue underglaze transfer printing in Staffordshire in 1781–84, and with the definition and introduction in c. 1789–91 of the improved formula for bone china (a form of soft-paste porcelain) which thereafter remained the standard for all English wares of this kind.
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👉 Josiah Spode in the context of Spode
Spode is an English brand of pottery and homewares produced in Stoke-on-Trent, England. Spode was founded by Josiah Spode (1733–1797) in 1770, and was responsible for perfecting two important techniques that were crucial to the worldwide success of the English pottery industry in the 19th century: transfer printing on earthenware and bone china.
Spode perfected the technique for transfer printing in underglaze blue on fine earthenware in 1783–1784 – a development that led to the launch in 1816 of Spode's Blue Italian range, which has remained in production ever since. The company is credited with developing, around 1790, the formula for bone china. Josiah Spode's son, Josiah Spode II, successfully marketed bone china.
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Josiah Spode in the context of Bone china
Bone china is a type of vitreous, translucent pottery, the raw materials for which include bone ash, feldspathic material and kaolin. It has been defined as "ware with a translucent body" containing a minimum of 30% of phosphate derived from calcined animal bone or calcium phosphate. Bone china is amongst the strongest of whiteware ceramics, and is known for its high levels of whiteness and translucency. Its high strength allows it to be produced in thinner cross-sections than other types of whiteware. Like stoneware, it is vitrified, but is translucent due to differing mineral properties.
In the mid-18th century, English potters had not succeeded in making hard-paste porcelain (as made in East Asia and Meissen porcelain), but found bone ash a useful addition to their soft-paste porcelain mixtures. This became standard at the Bow porcelain factory in London (operating from around 1747), and spread to some other English factories. The modern product was developed by the Staffordshire potter Josiah Spode in the early 1790s. Spode included kaolin, so his formula, sometimes called "Staffordshire bone-porcelain", was effectively hard-paste, but stronger, and versions were adopted by all the major English factories by around 1815.
View the full Wikipedia page for Bone china