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J & E Hall

J & E Hall is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand J & E Hall rather than just read about it. In short: J & E Hall is an English manufacturer of refrigeration equipment (today part of the Daikin group). It was originally established as an iron works in Dartford, Kent in 1785, with products including papermaking machines, steam engines and gun carriages, before it started producing refrigeration machinery in the 1880s.

J & E Hall — main illustration
J & E Hall — illustration

Key takeaways

  • J & E Hall belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect J & E Hall to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of J & E Hall from memory before moving on to harder problems.

Reference excerpt

J & E Hall is an English manufacturer of refrigeration equipment (today part of the Daikin group). It was originally established as an iron works in Dartford, Kent in 1785, with products including papermaking machines, steam engines and gun carriages, before it started producing refrigeration machinery in the 1880s. During the early 20th century, the company diversified to produce commercial vehicles (branded as Hallford, 1906–1926), lifts and escalators, before refocusing on its core refrigeration and air conditioning products in the late 1960s. The company retains a head office and some R&D facilities in Dartford.

History The company was originally established in 1785 in Lowfield Street, Dartford by smith and millwright John Hall (1764–1836). Originally from Alton, Hampshire, the second son of a millwright who had previously worked in Dartford, Hall moved to Dartford in 1784, and was employed to repair a mill on the River Darent in Hawley, after which he set up his own business, repairing and maintaining machinery used in corn, paper, oil and powder mills in and around Dartford. Bryan Donkin was one of the firm's earliest apprentices. Around 1800, the firm moved to larger premises in Waterside (now Hythe Street) on land which had once formed part of Dartford Priory, where its association with Donkin, now involved in the area's papermaking industry, helped it expand in partnership with the Fourdrinier brothers and John Gamble, to make paper machines. Donkin, Hall and Gamble also collaborated on canning food in metal containers. Hall acquired Peter Durand's patent in 1812 and after various experiments, Donkin, Hall and Gamble set up a canning factory in Blue Anchor Lane in Bermondsey, the first cannery to use tinned iron containers. By late spring 1813 they were appointing agents on the south coast to sell the preserved food to outbound ships, and the British Admiralty placed large orders with the firm of Donkin, Hall and Gamble for tinned meat. The firm later merged into Crosse & Blackwells. As an iron foundry business, Hall's company subsequently built steam engines and gun carriages, and in 1881 developed horizontal dry air refrigeration machinery suitable for use on ships. Refrigeration ultimately became the company's core business.

Commercial vehicles, lifts and escalators However, it also produced, from 1906 until 1926, parts for and then complete petrol-driven commercial vehicles. Initially, it manufactured chassis for heavy motor vehicles, including London buses, later also producing engines, with the vehicles branded as Hallfords (after its telegraphic address, a conflation of 'Hall' and 'Dartford'). Brewers and haulage contractors equipped their fleets with Hallfords, and the British Army deployed Hallford lorries during World War I. They continued to be sold until 1926. In the 1920s Halls started to manufacture passenger and goods lifts, taking over the Medway Safety Lift Company, and during World War II installing lifts in Royal Navy ships. Halls' lifts were also installed in buildings. During the 1930s Halls started to produce escalators under licence from a German company, with its products installed in Harrods and Selfridges, among other locations. In 1951, Halls were responsible for the modernisation of the Babbacombe Cliff Lift. They continued to make lifts and escalators until 1968 when that part of the business was sold to Otis.

Refrigeration In 1886, J & E Hall's first cold air machines were used to freeze 30,000 mutton carcasses being shipped from the Falkland Islands to the UK. Three years later, installed a two-stage carbon dioxide compressor for a frozen meat store at London's Smithfield Market. In 1910, it supplied refrigeration equipment to the National Skating Palace. Its machinery was used extensively on land: in London hospitals and hotels, by brewers, and in shops. In 1910, ammonia refrigeration was added to the Hall company refrigeration range. By the early 1920s J & E Hall had installed more than half of the world's marine cargo refrigeration, while on land it was regarded as a world leader, expanding into CO2, methyl chloride and the use of fluorocarbons. In 1931 it provided compressors for the Grimsby Ice Factory, once the largest factory of its kind, supplying ice to fishing fleets in the world's largest fishing port.

Merger and acquisition A June 1959 merger of Hall with Thermotank and Vent-Axia to form Hall-Thermotank proved a disaster. Profits fell, subsidiaries were sold, and the foundry closed. In 1968 the company decided to focus on the production of concentrate refrigeration units and air conditioners, producing small automatic compressors using methyl chloride as the refrigerant. The company's financial situation began to improve after a major reorganization in the 1970s. In 1976 Hall-Thermotank was acquired by the APV group and renamed APV Hall. In 1984 it was awarded a Queen's Award for Industry for the development of the Hallscrew single refrigeration compressor. In 1992 Vent-Axia, excepting its industrial division at Milton Keynes, was sold by APV to Smiths Industries. In 1994 APV Hall was acquired by McQuay International, then part of the Malaysian OYL group, and the J & E Hall name was reinstated. OYL became part of Japanese Daikin Industries Ltd in 2006. J & E Hall no longer has a factory in Dartford (the Hythe Street site is now a retail park), but retains a head office (in Hawley Road) and some R&D facilities in the town.

Association with Richard Trevithick

J & E Hall is strongly associated with the late career of steam engine pioneer Richard Trevithick. In 1832, he was invited by John Hall to work on a steam engine at the Dartford works, and lodged nearby at The Bull (today The Royal Victoria and Bull Hotel) in High Street. In early 1833, Trevithick was taken ill with pneumonia and died at the Bull on the morning of 22 April 1833. Colleagues at Hall's works made a collection for his funeral expenses, acted as bearers, and paid a night watchman to guard his grave at night to deter grave robbers. Trevithick was buried in an unmarked grave in St Edmund's Burial Ground, East Hill, Dartford. The burial ground closed in 1857, with the gravestones being removed in the 1960s. A plaque marks the approximate spot believed to be the site of the grave. The plaque lies on the side of the park, near the East Hill gate, and an unlinked path.

Other notable engineers connected with J & E Hall Bryan Donkin Thomas Pullinger Walter Gordon Wilson

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with J & E Hall

Start with the simplest possible case. Write down what J & E Hall claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to J & E Hall before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about J & E Hall ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of J & E Hall

In research
J & E Hall appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses J & E Hall in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
J & E Hall is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1785 establishments in England, Commercial vehicles, Companies based in Kent, so understanding it makes those chapters shorter.
In everyday life
Look for J & E Hall outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study J & E Hall in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what J & E Hall means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain J & E Hall out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is J & E Hall in simple terms?

J & E Hall is an English manufacturer of refrigeration equipment (today part of the Daikin group). It was originally established as an iron works in Dartford, Kent in 1785, with products including papermaking machines, steam engines and gun carriages, before it started producing refrigeration machi…

Why does J & E Hall matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study J & E Hall?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on J & E Hall.

Tags

  • 1785 establishments in England
  • Commercial vehicles
  • Companies based in Kent
  • Daikin
  • Dartford
  • Elevator manufacturers
  • Escalator manufacturers
  • Food preservation
  • Heating, ventilation, and air conditioning companies

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