Highland Railway Classes prior to 1870
The Highland Railway began as the Inverness and Nairn Railway (later the Inverness and Aberdeen Junction Railway), which operated the other lines which became part of the Highland Railway on its formation in 1865. For post-1870 locomotives, see Locomotives of the Highland Railway. Initial locomotive designs. William Barclay. The first locomotive superintendent was William Barclay, who was a nephew of Alexander Allan. The locomotives supplied initially were classic Allan designs, small 2-2-2s and 2-4-0s, outside cylindered and with external framing and (initially at least) not even a weatherboard to protect  the enginemen. It was later decided that a cab was essential to protect them from winter weather. Only four of the Barclay era locomotives, all rebuilt by Jones, were still in service at the time of the Grouping in 1923. Raigmore class. The first locomotives were two 2-2-2s were supplied by Hawthorns and Company of Leith in 1855, and a second pair delivered in 1857. Cylinder dimensions were , and driving wheel diameters were . The boiler pressure was originally , later being revised to . They were : In around 1869, nos. 3 and 4 were scrapped, and their driving wheels were  used by Stroudley to rebuild nos. 1 and 2 as 2-4-0s. No. 1 was withdrawn within a few years, but no. 2 received a more extensive rebuild, gaining a larger boiler and cylinders, and lasted until 1899. Seafield class. A batch of seven 2-4-0s with bore x stroke cylinders and driving wheels were supplied by Hawthorns between 1858 and 1859 for goods service. Boiler pressure was originally , later increased to . In 1873 Jones rebuilt no. 10 as a 4-4-0 to counter flange wear problems on the Dingwall & Skye line. He used the Adams bogie  arrangement and replaced the cylinders with new ones of bore and stroke. This engine was effectively the prototype for the F Class built from 1874 onwards. In 1875 a second locomotive (no. 7) was similarly rebuilt, although this seems to have been a trial for new features adopted for the Skye bogies. The other 5 locomotives of this batch remained as 2-4-0s but were rebuilt with cabs and longer ( stroke) cylinders between 1875 and 1880. All were withdrawn between 1893 and 1899. Belladrum class. A pair of 2-2-2s with cylinders was supplied by Hawthorns in 1862 . Driving wheels were 6 foot 0 inches, boiler pressure was originally 100 lb/square inch, later increased to 120 lb/square inch. They were the first locomotives supplied with cabs from new. No. 13 was withdrawn in 1890. In 1871 no. 12 was rebuilt by Jones as a 2-2-2T for branch line work, in which form it survived until 1898. 14 class. Two 2-4-0s were supplied by Hawthorns in 1862. They were similar to but slightly larger than the earlier batch, and were fitted with cabs from new. They were: Later they were rebuilt with  , bore x stroke, cylinders and driving wheels. No. 15 was withdrawn in 1893, while no. 14 lasted until 1901 (having been renumbered 6 and then 49). Findhorn railway. In 1862 the Findhorn Railway was taken over, along with its sole locomotive, a Neilson and Company 0-4-0ST locomotive dating from 1860. It had wheels and cylinders. It was sold to a contractor in 1872. Needlefield Tank. A small 0-4-0T was built by Hawthorns in 1863 for the Burghead branch line. It had driving wheels and inside cylinders. As built, it proved to be rather unstable and  was therefore converted to an 0-4-2T by Stroudley. It later became a stationary engine to power the Lochgorm works sawmill. It returned to traffic as no. 1A in 1898, and was finally withdrawn in 1902. Small and Medium Goods. Ten 2-4-0s were supplied by Sharp, Stewart and Company in 1863. They had cylinders, boilers and driving wheels. The next year, Sharp, Stewart supplied ten more, with the stroke increased to but otherwise identical. All were rebuilt by Jones between 1874 and 1893, gaining cylinders, and having their driving wheels increased to by means of applying  thicker tyres. Withdrawals commenced in 1896, but nos. 27, 37 and 42 survived into LMS ownership. Glenbarry class. Three batches of 2-2-2s were supplied in 1863/64. They all had boilers and cylinders with a stroke. Driving wheels were . Two were built by Hawthorns in 1863 with cylinders: Six more were built by Neilson and Company in 1863 with bore cylinders. They were all converted to bore at an unspecified later date. A further batch of ten was built by Neilson in 1864. They had inch bore cylinders. With increased traffic, especially over the Perth line, heavier locomotives were  needed, but the company was short of money. Jones responded by following Stroudley's example of rebuilding 2-2-2s as 2-4-0s. No. 29 was the first to be rebuilt in 1871, and by 1893 all except no. 32 had been so converted. Cylinder dimensions were increased to . Seven locomotives received larger boilers between 1881 and 1896, and the others were withdrawn between 1897 and 1900. The reboilered examples lasted longer, and no. 35 was still in service (latterly renumbered 35A) at the Grouping. William Stroudley. Lochgorm Tanks. During William Stroudley's tenure as locomotive superintendent from 1865–69  only one new locomotive was built. This was No. 56, an 0-6-0ST built at the Highland Railway's Lochgorm works in Inverness in 1869. This is generally considered the basis of the LB&SCR "Terrier" locomotives he produced later in his career. Two similar locomotives were built under Jones' in 1873 and 1874. They had wheels and cylinders. The boiler of the first is believed to have come from no. 3. They were classified as class R in Peter Drummond's 1901 classification scheme. No. 56 was rebuilt by Jones in 1895, and the other two were similarly rebuilt  by Drummond in 1897. Alterations included thicker tyres to increase the wheel diameter to , and the provision of larger bunkers. No. 16 was later renumbered 49. All three passed to the LMS in 1923; who removed the names when applying LMS livery. Naming and Numbering. As will be apparent, the original numbering scheme was a simple chronological sequence, although Stroudley tank no. 16 was built as a replacement for the original Findhorn branch engine and received its number. In later years, new locomotives took some of the early numbers, and surviving early engines were either renumbered or given an 'A ' suffix. Renaming of locomotives was common in the early years, and only the first name is recorded here. Part of the reason for multiple engines having the same name was that names were applied to locomotives used on an appropriate part of the line. If an engine was reallocated then the name was moved to another. The name "Bruce" was commonly used for Highland Railway locomotives (five bore it all told), and contrary to common opinion it is not in memory of King Robert the Bruce but of the Hon. C. T. Bruce who was Chairman of the company from  1885 to 1891 (and had earlier been Chairman of the Inverness and Perth Junction Railway). Classic Features. Features that arrived during the 1860s and stayed until the Peter Drummond days were the louvered chimneys and counter-pressure brake. The chimney was really a pair of concentric ones. It is usually considered to have been adopted to aid forward visibility for the driver (a rather different pattern of smoke deflector), but there is some evidence that the real reason was to reduce the chance of lineside fires (rather like the prominent 'stacks' of early United States designs). Highland Railway Classes prior