John F. McIntosh

Born	28 November 1846
Died	7 January 1918
Nationality	Scottish
Employer	Scottish North Eastern Railway (apprentice); Caledonian Railway (driver, then Carlisle Foreman 1882; Carlisle and Aberdeen Locomotive Inspector; Locomotive Superintendent 1895–1914)

John Farquharson McIntosh (1846–1918) was a Scottish locomotive engineer who served as Locomotive Superintendent of the Caledonian Railway from 1895 until his retirement in 1914, producing the Dunalastair 4-4-0 series that became the most celebrated Caledonian express locomotives and establishing the railway's Edwardian engineering reputation as one of the most technically progressive in Britain.

Born at Forfar on 28 November 1846, the son of a railwayman, McIntosh entered the locomotive department of the Scottish North Eastern Railway as an apprentice and moved to the Caledonian on its absorption of the SNER. He served successively as a driver, losing his right hand in a coupling accident in 1876 but continuing on the footplate, and rose through running-shed appointments to become Locomotive Superintendent on the resignation of John Lambie in 1895.

The Dunalastair 4-4-0 of 1896 was McIntosh's breakthrough design: with a 4 ft 8 in diameter boiler, it was significantly larger than any contemporary British 4-4-0 and demonstrated convincingly that generous boiler dimensions were the key to sustained high-speed performance with heavy trains. The Dunalastair II, III, and IV of 1897, 1899, and 1904 developed the design progressively, and the class attracted international attention — the Belgian State Railway built a version under licence, a remarkable mark of the Caledonian design's influence. The four-cylinder Cardean 4-6-0 of 1906 was McIntosh's most powerful design, working the 'Corridor' express to Carlisle and the Anglo-Scottish services.

McIntosh retired in May 1914 and was succeeded by William Pickersgill. He died at Glasgow on 7 January 1918, his Dunalastair series having established the large-boilered 4-4-0 as the definitive British express passenger type of the Edwardian era.

Biography

John Farquharson McIntosh (1846–1918) was a Scottish locomotive engineer who served as Locomotive Superintendent of the Caledonian Railway from June 1895 until his retirement in May 1914. His large-boilered express designs gave the Caledonian a reputation for power and elegance during the Edwardian high-summer of the steam locomotive.

McIntosh was born at Forfar on 28 November 1846, the son of a railwayman, and entered the locomotive department of the Scottish North Eastern Railway as an apprentice. He served as a driver, losing his right hand in a coupling accident in 1876 but continuing on the footplate, and rose by way of running-shed posts to become Locomotive Superintendent of the Caledonian on the resignation of John Lambie.

His Dunalastair Class 4-4-0 of 1896 was a milestone, the largest 4-4-0 in Britain at the time, with a 4 ft 8 in diameter boiler, and was developed through Dunalastair II (1897), III (1899) and IV (1904). The four-cylinder 903 'Cardean' Class 4-6-0 of 1906 worked the Caledonian's premier 'Corridor' express to Carlisle. The simpler 0-6-0 812 Class (1899) became the Caledonian's standard mineral engine, of which 96 were built; many lasted into BR service into the 1960s.

McIntosh retired in May 1914 and was succeeded by William Pickersgill. He died at Glasgow on 7 January 1918.

Locomotives designed

Caledonian 179 Dunalastair III Class — The third of John F. McIntosh's celebrated Dunalastair series for the Caledonian Railway, an inside-cylinder 4-4-0 of 1899–1900 with a larger-diameter boiler than the earlier Dunalastair II. Seventeen were built at St Rollox to handle the heaviest Anglo-Scottish boat trains via the West Coast Main Line. The class lasted into the LMS era under the new Caledonian section and the last withdrawal followed nationalisation in 1948.
Caledonian Railway 179 Dunalastair I Class — John F. McIntosh's 1896 Caledonian Railway Dunalastair I class 4-4-0 — McIntosh's celebrated express design that established the "Dunalastair" series and made the Caledonian one of Britain's most progressive express railways. 15 built; named after the prototype's name (Dunalastair, a Scottish Highland estate). The big-boilered Dunalastairs were widely admired and their design influenced 4-4-0 practice across Britain and Europe.
Caledonian Railway 49 Class — McIntosh's 1903 CR 49 class 4-6-0 "Sir James Thompson" — Caledonian's first 4-6-0, built at St Rollox.
Caledonian Railway 492 Class — McIntosh's 1903 CR 492 class 0-8-0T — Caledonian heavy shunting tank for hump-yard and dock work.
Caledonian Railway 72 Class — McIntosh's 1906 CR 72 class 4-4-0 — variant of the Dunalastair series.
Caledonian Railway 721 Class — John F. McIntosh's 1894 Caledonian Railway 721 class 4-4-0 — see Dunalastair II class. The 721 "Dunalastair I" was the first of McIntosh's celebrated Dunalastair series.
Caledonian Railway 721 Dunalastair II Class — McIntosh's 1897 Caledonian Railway Dunalastair II class 4-4-0 — enlargement of the Dunalastair I with even larger boiler. 15 built. Worked Caledonian expresses through to grouping; none preserved in original form.
Caledonian Railway 812 Class — McIntosh's 1899 Caledonian Railway 812 class 0-6-0 goods — McIntosh's standard CR goods engine. 79 built between 1899 and 1909. CR No. 828 is preserved at the Strathspey Railway in working order. (Also see entry for CR 294 "Jumbo" class.)
Caledonian Railway 903 Class — McIntosh's 1906 CR 903 class 4-6-0 "Cardean" — McIntosh's celebrated express 4-6-0, named after the prototype's name. The Cardean was a flagship Anglo-Scottish express engine — at one time the heaviest, most powerful express engine in Britain. None preserved.