A potbank is a colloquial name for a pottery factory in

North Staffordshire The federation of Stoke-on-Trent was the 1910 amalgamation of the six Staffordshire Potteries towns of Burslem, Tunstall, Stoke-upon-Trent, Hanley, Fenton and Longton into the single county borough of Stoke-on-Trent. The federation was one of ...

used to make

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 c ...

earthenware Earthenware is glazed or unglazed Vitrification#Ceramics, nonvitreous pottery that has normally been fired below . Basic earthenware, often called terracotta, absorbs liquids such as water. However, earthenware can be made impervious to liquids ...

and sanitaryware. Gladstone Pottery Museum - geograph

Etymology

The term potbank has been used for generations; traditionally it is believed to originate in a business strategy employed by

Josiah Wedgwood Josiah Wedgwood (12 July 1730 – 3 January 1795) was an English potter, entrepreneur and abolitionist. Founding the Wedgwood company in 1759, he developed improved pottery bodies by systematic experimentation, and was the leader in the indu ...

, the famous early industrialist. Unable to meet the demand for his

creamware Creamware is a cream-coloured refined earthenware with a lead glaze over a pale body, known in France as '' faïence fine'', in the Netherlands as ''Engels porselein'', and in Italy as ''terraglia inglese''.Osborne, 140 It was created about 175 ...

s, he sub-contracted other potters to make shapes to his specification, and to hold these in stocks until he required them. Their

warehouse A warehouse is a building for storing goods. Warehouses are used by manufacturers, importers, exporters, wholesalers, transport businesses, customs, etc. They are usually large plain buildings in industrial parks on the rural–urban fringe, out ...

s were called banks, and the word "potbank" is thought to derive from the practice.

History

Process

The raw materials of

pottery Pottery is the process and the products of forming vessels and other objects with clay and other raw materials, which are fired at high temperatures to give them a hard and durable form. The place where such wares are made by a ''potter'' is al ...

include

clay Clay is a type of fine-grained natural soil material containing clay minerals (hydrous aluminium phyllosilicates, e.g. kaolinite, ). Most pure clay minerals are white or light-coloured, but natural clays show a variety of colours from impuriti ...

quartz Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The Atom, atoms are linked in a continuous framework of SiO4 silicon–oxygen Tetrahedral molecular geometry, tetrahedra, with each oxygen being shared between two tet ...

and

feldspar Feldspar ( ; sometimes spelled felspar) is a group of rock-forming aluminium tectosilicate minerals, also containing other cations such as sodium, calcium, potassium, or barium. The most common members of the feldspar group are the ''plagiocl ...

. These are mixed sieved and filtered to make

slip Slip or The Slip may refer to: * Slip (clothing), an underdress or underskirt Music * The Slip (band), a rock band * ''Slip'' (album), a 1993 album by the band Quicksand * ''The Slip'' (album) (2008), a.k.a. Halo 27, the seventh studio al ...

, which is pressed to make a workable body. Bowls are jolleyed on a wheel, plates are jiggered on a wheel and fancies moulded in

plaster Plaster is a building material used for the protective or decorative coating of walls and ceilings and for moulding and casting decorative elements. In English, "plaster" usually means a material used for the interiors of buildings, while "re ...

moulds. This greenware is dried, and placed into saggars which are stacked into a

bottle oven A bottle oven or bottle kiln is a type of kiln. The word 'bottle' refers to the shape of the structure and not to the kiln's products, which are usually pottery, not glass. Bottle kilns were typical of British industrial architecture, the indus ...

for the first or biscuit) firing at 1,000C. The resulting "biscuit ware" can be decorated with an underglaze

transfer Transfer may refer to: Arts and media * ''Transfer'' (2010 film), a German science-fiction movie directed by Damir Lukacevic and starring Zana Marjanović * ''Transfer'' (1966 film), a short film * ''Transfer'' (journal), in management studies * ...

and coated with a glaze. These are then ''placed'' in a saggar with kiln furniture thimbles to separate them and fired for a second time, the

glost firing Ceramic glaze, or simply glaze, is a glassy coating on ceramics. It is used for decoration, to ensure the item is impermeable to liquids and to minimize the adherence of pollutants. Glazing renders earthenware impermeable to water, sealing th ...

can be up to 1,400C, in another bottle oven. Depending on ware, the item could be decorated and

gilded Gilding is a decorative technique for applying a very thin coating of gold over solid surfaces such as metal (most common), wood, porcelain, or stone. A gilded object is also described as "gilt". Where metal is gilded, the metal below was tradi ...

by hand and be fired for a third time in a muffle kiln at 1,250.Interpretation board at Gladstone Pottery Museum.Rosenthal:Making of porcelain

Stoke-on-Trent

The six towns of

the Potteries The Staffordshire Potteries is the industrial area encompassing the six towns Burslem, Fenton, Staffordshire, Fenton, Hanley, Staffordshire, Hanley, Longton, Staffordshire, Longton, Tunstall, Staffordshire, Tunstall and Stoke-upon-Trent, Stoke ( ...

were the centre of the ceramic industry in the

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...

. The

Trent and Mersey Canal The Trent and Mersey Canal is a canal in Derbyshire, Staffordshire and Cheshire in north-central England. It is a "narrow canal" for the vast majority of its length, but at the extremities to the east of Burton upon Trent and north of Middl ...

which opened in 1777 provided cheap transport for the

china clay Kaolinite ( ; also called kaolin) is a clay mineral, with the chemical composition aluminium, Al2Silicon, Si2Oxygen, O5(hydroxide, OH)4. It is a layered silicate mineral, with one tetrahedron, tetrahedral sheet of silica () linked through oxygen ...

from Cornwall, the bones and the

coal Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other Chemical element, elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal i ...

from local

collieries Coal mining is the process of extracting coal from the ground or from a mine. Coal is valued for its energy content and since the 1880s has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extrac ...

, and a smooth passage to

Liverpool Liverpool is a port City status in the United Kingdom, city and metropolitan borough in Merseyside, England. It is situated on the eastern side of the River Mersey, Mersey Estuary, near the Irish Sea, north-west of London. With a population ...

to export the finished goods.

Occupational diseases

* Potter's rot *

Lead poisoning Lead poisoning, also known as plumbism and saturnism, is a type of metal poisoning caused by lead in the body. Symptoms may include abdominal pain, constipation, headaches, irritability, memory problems, infertility, numbness and paresthesia, t ...

Preservation

There are 46 standing bottle ovens in

Stoke-on-Trent Stoke-on-Trent (often abbreviated to Stoke) is a city and Unitary authorities of England, unitary authority area in Staffordshire, England. It has an estimated population of 259,965 as of 2022, making it the largest settlement in Staffordshire ...

, all now

listed building In the United Kingdom, a listed building is a structure of particular architectural or historic interest deserving of special protection. Such buildings are placed on one of the four statutory lists maintained by Historic England in England, Hi ...

s. Bottle ovens can be seen at the

Gladstone Pottery Museum The Gladstone Pottery Museum is a working museum of a medium-sized coal-fired pottery, typical of those once common in the North Staffordshire area of England from the time of the Industrial Revolution in the 18th century to the mid 20th centu ...

Burleigh Pottery Burleigh Pottery (also known as Burgess & Leigh) is the name of a pottery manufacturer in Middleport, Stoke-on-Trent. The business specialises in traditionally decorated earthenware tableware. The factory is a nineteenth-century grade II* lis ...

and the Ironbridge Gorge Museum.

References

Bibliography

* *

External links

Royal Stafford Guide to making Tableware
Modern tableware process.
Potbank Dictionary
Archived for the British Library.
Stoke Museums Official WebsiteRosenthal Porcelain production methods
Staffordshire Economy of Staffordshire Buildings and structures in Staffordshire