| Great Northern Railway Classes PG, QG, QLG and QNG | |||||||||||||||||||
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Great Northern Railway Classes PG, QG, QLG and QNG[a] were a series of 0-6-0 freight locomotives introduced from 1899 by Charles Clifford.[1]
The PG class was introduced in December 1899 by Charles Clifford with 4 feet 7 inches (1.40 m) driving wheels and 18+1⁄2 by 24 inches (47 cm × 61 cm) cylinders.[2] The QG's introduced in 1904 were 1 foot 6 inches (0.46 m) longer than the PG with 18+1⁄2 by 26 inches (47 cm × 66 cm) cylinders weighed in 2 tons heavier.[3] The key changed with the QLG class introduced in 1906 was a 4 feet 9 inches (1.45 m) wide boiler.[4]
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| Belfast and County Down Railway (1846–1948) |
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| Belfast and Northern Counties Railway (1860–1903) |
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| Northern Counties Committee (1903–1949) |
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| Great Northern Railway (1876–1958) |
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| Sligo, Leitrim and Northern Counties Railway (1875–1957) |
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| Cork, Bandon and South Coast Railway (1849–1924) |
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| Dublin and Kingstown Railway (1834–1856) |
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| Dublin and South Eastern Railway (1854–1925) |
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| Great Southern and Western Railway (1845–1924) |
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| Midland Great Western Railway (1847–1924) |
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| Great Southern Railways (1925–1944) |
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| Córas Iompair Éireann (1945–1962) |
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| Tralee and Dingle Light Railway (1891–1953) |
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| Industrial engines |
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