Patent fuel was a 19th-century artificial fuel made in Cardiff in Wales by mixing in a hydraulic press coal and binding substances, like pitch. [1] [2] There were many factories producing this product with the same recipe, thus the only way of identifying them is their shape and imprinted logos. The most well-known patent fuel factories were the Star Patent fuel Co., the Crown Patent fuel, the Cardiff Patent fuel etc. [3] In the late nineteenth century and early twentieth century, south Wales was the main exporter of patent fuel in the world, with around three million tons a year being exported each year in the first decade of the twentieth century. [4] Patent Fuel cubes are exhibited at the National Museum of Wales in UK. [5]
The shape adopted generally in Cardiff was a rectangular block varying only in dimensions. The fact that practically the whole output was exported influenced the design of the block, as this form lent itself to easy and economical stowage and storage, and the rubbing surfaces exposed were small in proportion to the cubical contents. The blocks manufactured varied from 9 to 26 lbs. in weight, and no definite standard of weight appears to be required by consumers, although modern practice inclines if anything towards the production of larger sizes. [2]
The cubes were meant for industrial, military use or even expeditions. [6] [4] They were mostly used for the power needs of both battleships steamers and merchant steamers all around the world or for railways. Remains of this widely used product can be found mostly at the bottom of the sea like at the shipwrecks of Skaala a Norwedian steamer South from Bolt Head, [7] of steamer Eleni, although it's yet to be confirmed, at Kasos' island, [6] at Cardiff's port and at the remains of the expeditions in Antarctica. [4]
Coal was first brought into use in London about 1300, and owing to the high price of wood it rapidly came into general use. The smoke given off, on account of its imperfect combustion, became the subject of agitation in the time of Edward I, and again during the reign of Queen Elizabeth, when Proclamations were issued prohibiting the use of coal in London when Parliament was in Session. In 1306 a Royal Proclamation was issued prohibiting artificers from using coal in their furnaces upon the pains of punishment of great fines and ransoms for the first offence.
On the December 1799 John Frederick Chabannes, was granted a patent for the manufacture of patent fuel, consisting of great and small coals mixed together which were usually bought in the pool in the River Thames for consumption in the cities of London and Westminster, and their environs. The composition was consisting of small coals and a small quantity of earth, clay, cow-dung, tar, pitch, broken glass, sulphur, sawdust, oil-cakes, tan, or wood, mixed together and moulded into bricks or balls. [8] [2] [9] this better and last recipe was practically free from dirt and smokeless. [2]
Patent fuel was the second most popular exported product in Wales. During 1913 Wales exported 746,000 tons of iron and 714,000 tons of Patent fuel. This popularity was due to its resistance in very hot or very cold climates. With coals varying from the Bituminous seams of Monmouthshire, containing up to 35 per cent., to the Anthracite seams of Carmarthenshire, having 5 per cent, of volatile matter, the blending can be adapted to a variety of conditions. Chief consumers were America, French, Italy and Spanish railway and steamship companies. [2]
For the needs of patent fuel production two coalfield sections at South Wales were used: the first section consisted of the counties of Monmouth and East Glamorgan with Cardiff as the chief outlet port and the western section with the Counties of Glamorgan, Carmarthen, Brecon and Pembroke with Swansea as the natural outlet. The first section produced mostly smokeless steam coal while the second section produced mostly Anthracite although considerate quantities of Bituminous coal existed. [1]
The process of manufacture varied only in minor details, and shortly stated it is as follows:
(a) In works where washeries were installed, the coals were delivered from railway trucks into receiving bins and were elevated to the washeries, and after being freed from impurities were graded into nuts, beans, and fines. The former were loaded direct into railway wagons for sale, whilst the fines were passed to driers for reducing the moisture content to about 3 per cent., and were then conducted into bins.
(b) Pitch was delivered into a cracker, and then to a disintegrator, and afterwards was automatically delivered on to a conveyor in measured quantities, where it was joined by the fines drawn from bins.
(c) The mixture was then passed into disintegrators for reducing the sizes and thoroughly mixing the coal and pitch.
{d) Elevators then conveyed the prepared material to pugheaters heated by superheated steam, where the fusion of the pitch was effected and the mixture became agglomerated in a plastic state.
(e) The agglomeration was then partially cooled, afterwards entered the moulds and was finally mechanically pressed and then delivered by bands for cooling and hardening on to trolleys or storage dumps. [2]
Its calorific value was somewhat higher than that of the coal used in its construction, and it had the additional advantages of compactness and ability to withstand weathering and rough handling. [2] The material was practically smokeless, and yield about 14,000 British thermal units per Ib. In comparison with coal, it was lasting more than twice as long and was giving off much greater heat. [8] Differences, however in calorific values can be found depending on the type of the coal used for its production. If the coal used was Bituminous coal it had less calorific values than Anthracite.
The first patent fuel works in Cardiff, Crown Works, was established in 1857 with variations in ownership throughout the years. The factory continued the production until 1964 but not in the name ‘Crown’. [4]
The second in the Cardiff fuel works, the Anchor Patent Fuel Works Ltd., was opened about 1866. [9]
The Star works was founded in 1874 by Thomas Edward Heath and his partner Tom Evens, and located on the site of the former Maindy ironworks of Isaac Russell. Heath introduced a number of improvements which facilitated production and material handling. Blocks were of regular shape and were neatly stacked on the company's wharf ready for shipping by barge on the Glamorganshire Canal to Bute Dock. [10] The Works prospered from the start and in 1887 a limited company was formed. [9] The most popular form of patent fuel for domestic purposes is of the egg-shaped or " ovoid " variety. The word "ovoid" or "ovoidal". [8]
Coke is a grey, hard, and porous coal-based fuel with a high carbon content. It is made by heating coal or petroleum in the absence of air. Coke is an important industrial product, used mainly in iron ore smelting, but also as a fuel in stoves and forges.
Anthracite, also known as hard coal and black coal, is a hard, compact variety of coal that has a submetallic lustre. It has the highest carbon content, the fewest impurities, and the highest energy density of all types of coal and is the highest ranking of coals.
Tiger Bay was the local name for an area of Cardiff which covered Butetown and Cardiff Docks. Following the building of the Cardiff Barrage, which dams the tidal rivers, Ely and Taff, to create a body of water, it is referred to as Cardiff Bay. Tiger Bay is Wales’ oldest multi-ethnic community, with sailors and workers from over 50 countries settling there from the mid-19th century onwards.
Coal gas is a flammable gaseous fuel made from coal and supplied to the user via a piped distribution system. It is produced when coal is heated strongly in the absence of air. Town gas is a more general term referring to manufactured gaseous fuels produced for sale to consumers and municipalities.
Solid fuel refers to various forms of solid material that can be burnt to release energy, providing heat and light through the process of combustion. Solid fuels can be contrasted with liquid fuels and gaseous fuels. Common examples of solid fuels include wood, charcoal, peat, coal, hexamine fuel tablets, dry dung, wood pellets, corn, wheat, rice, rye, and other grains. Solid fuels are extensively used in rocketry as solid propellants. Solid fuels have been used throughout human history to create fire and solid fuel is still in widespread use throughout the world in the present day.
A briquette is a compressed block of coal dust or other combustible biomass material used for fuel and kindling to start a fire. The term is a diminutive derived from the French word brique, meaning brick.
South Wales is a loosely defined region of Wales bordered by England to the east and mid Wales to the north. Generally considered to include the historic counties of Glamorgan and Monmouthshire, south Wales extends westwards to include Carmarthenshire and Pembrokeshire. In the western extent, from Swansea westwards, local people would probably recognise that they lived in both south Wales and west Wales. The Brecon Beacons National Park covers about a third of south Wales, containing Pen y Fan, the highest British mountain south of Cadair Idris in Snowdonia.
Anthracite iron or anthracite pig iron is iron extracted by the smelting together of anthracite coal and iron ore, that is using anthracite coal instead of charcoal in iron smelting. This was an important technical advance in the late-1830s, enabling a great acceleration of the Industrial Revolution in the United States and in Europe.
The History of coal mining goes back thousands of years, with early mines documented in ancient China, the Roman Empire and other early historical economies. It became important in the Industrial Revolution of the 19th and 20th centuries, when it was primarily used to power steam engines, heat buildings and generate electricity. Coal mining continues as an important economic activity today, but has begun to decline due to the strong contribution coal plays in global warming and environmental issues, which result in decreasing demand and in some geographies, peak coal.
The South Wales Coalfield extends across Pembrokeshire, Carmarthenshire, Swansea, Neath Port Talbot, Bridgend, Rhondda Cynon Taf, Merthyr Tydfil, Caerphilly, Blaenau Gwent and Torfaen. It is rich in coal deposits, especially in the South Wales Valleys.
Hot blast refers to the preheating of air blown into a blast furnace or other metallurgical process. As this considerably reduced the fuel consumed, hot blast was one of the most important technologies developed during the Industrial Revolution. Hot blast also allowed higher furnace temperatures, which increased the capacity of furnaces.
The Barry Railway Company was a railway and docks company in South Wales, first incorporated as the Barry Dock and Railway Company in 1884. It arose out of frustration among Rhondda coal owners at congestion and high charges at Cardiff Docks as well the monopoly held by the Taff Vale Railway in transporting coal from the Rhondda. In addition, the Taff Vale did not have the required capacity for the mineral traffic using the route, leading to lengthy delays in getting to Cardiff.
Smokeless fuel is a type of solid fuel which either does not emit visible smoke or emits minimal amounts during combustion. These types of fuel find use where the use of fuels which produce smoke, such as coal and unseasoned or wet wood, is prohibited.
Cardiff Docks is a port in southern Cardiff, Wales. At its peak, the port was one of the largest dock systems in the world with a total quayage of almost 7 mi (11 km). Once the main port for the export of South Wales coal, the Port of Cardiff remains active in the import and export of containers, steel, forest products and dry and liquid bulks.
Refined coal is the product of the coal-upgrading technology that removes moisture and certain pollutants from lower-rank coals such as sub-bituminous and lignite (brown) coals, raising their calorific values. Coal refining or upgrading technologies are typically pre-combustion treatments and processes that alter the characteristics of coal before it is burned. Pre-combustion coal-upgrading technologies aim to increase efficiency and reduce emissions when coal is burned. Depending on the situation, pre-combustion technology can be used in place of or as a supplement to post-combustion technologies to control emissions from coal-fueled boilers.
The history of coal mining in the United States starts with the first commercial use in 1701, within the Manakin-Sabot area of Richmond, Virginia. Coal was the dominant power source in the late 1800s and early 1900s, and although in rapid decline it remains a significant source of energy in 2024.
Densified coal is the product of the Coldry Process coal upgrading technology that removes moisture from low-rank coals such as sub-bituminous and lignite/brown coal. The densification process raises the calorific value of low-rank coal to equal or exceed that of many export-grade black coals. Densified coal resulting from the Coldry Process is regarded as a black coal equivalent or replacement for black coal.
Black coal equivalent (BCE) is an export coal product derived from the Coldry Process, a patented coal upgrading technology operated by Environmental Clean Technologies Limited, in Victoria, Australia. The Coldry Process is applied to brown coal (lignite) with a typical moisture content of 60 per cent by weight and transforms the coal into a densified coal product of equal or better calorific value to typical export quality black coal, with less ash and sulfur content. Black coal equivalent derived from brown coal is ostensibly a 'cleaner' burning coal fuel than most black coals.
The coal industry in Wales played an important role in the Industrial Revolution in Wales. Coal mining in Wales expanded in the 18th century to provide fuel for the blast furnaces of the iron and copper industries that were expanding in southern Wales. The industry had reached large proportions by the end of that century, and then further expanded to supply steam-coal for the steam vessels that were beginning to trade around the world. The Cardiff Coal Exchange set the world price for steam-coal and Cardiff became a major coal-exporting port. The South Wales Coalfield was at its peak in 1913 and was one of the largest coalfields in the world. It remained the largest coalfield in Britain until 1925. The supply of coal dwindled, and pits closed in spite of a UK-wide strike against closures. Aberpergwm Colliery is the last deep mine in Wales.
George Insole was an English entrepreneur who built an extensive coal mining and shipping business in South Wales.
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