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Dugald Drummond (1840-1912) was a Scottish locomotive engineer.
1840 January 1st. Born
He was a major locomotive designer and builder and his London and South Western Railway engines continued in main line service with the Southern Railway to enter British Railways service in 1947.
1912 November 8th. Died. Read his obituary in The Engineer 1912/11/15.
1912 Obituary 
DUGALD DRUMMOND was born at Ardrossan on 1st January 1840, his father being permanent-way inspector on the Bowling section of the North British Railway.
He served his apprenticeship with Messrs. Forrest and Barr, general engineers and millwrights, of Glasgow, and on its completion he worked on the Caledonian and Dumbartonshire Railway for a time, and then spent two years with Mr. Thomas Brassey, of Canada Works, Birkenhead.
In 1864 he joined the Edinburgh and Glasgow Railway Co., prior to its amalgamation with the North British Railway Co., and in the following year he went to Inverness as foreman erector in the Highland Railway Works, under the late Mr. William Stroudley.
In 1870 Mr. Stroudley left the North in order to take up the appointment of locomotive, carriage and wagon superintendent of the London, Brighton and South Coast Railway, and Mr. Drummond resigned his post at Inverness in order to accompany him as his assistant.
Five years later he was offered the post of locomotive, carriage and wagon superintendent of the North British Railway, which he accepted.
In 1882 the Caledonian Railway Co. asked him to fill the same position on its line, and he accordingly left the service of the North British Railway Co. to take up his new post, which he held for eight years.
In 1890 he finally severed his direct connection with the Scottish railway companies, and set up in business on his own account, founding the Glasgow Railway Engineering Co., at Govan, which is still being carried on by his surviving son, Mr. George Drummond.
In 1895 he was offered and accepted the appointment of chief mechanical engineer of the London and South Western Railway Co., which had previously been held for seventeen years by Mr. W. Adams. This appointment he held — during the same period as his predecessor — until the time of his death.
Among the best known of his many inventions may be mentioned the cross-tube locomotive fire-box, its average life being no less than equivalent to a locomotive mileage of 350,000; boilers fitted with these fire-boxes are notable for their easy steaming.
Another feature he introduced with success was the beating of the water in the tender by means of exhaust steam. Such high temperatures as were attained rendered the use of injectors impossible, and accordingly he installed steam-operated feed-pumps. All the engines on the London and South Western Railway are now fitted with the Drummond spark arrester, which is one of the most efficacious of any that have been tried in this country. One or two of the different types of locomotives he introduced may be referred to.
In 1898 he designed a locomotive (No. 720) purposely to do away with piloting. It really consisted of two entirely independent sets of engines driving separate shafts, the wheels themselves being without coupling-rods.
Another engine which embodied several new departures was the six- coupled four-cylinder non-compound locomotive which was introduced at the end of 1907. This engine with its tender weighed as much as 116 tons; it contained a steam-drier in the smoke-box, and the tender was fitted with a water picking-up arrangement.
In 1903 he introduced a steam motor-coach to deal with the midday suburban traffic. The first to be made was intended to run between Fratton and Havant.
The removal of the locomotive works from Nine Elms to Eastleigh was carried out under his supervision, and the new works were erected to his designs. He was a man of great ability and gifted as an organizer and manager of men. During the late railway strike not a single man from his department went on strike. He established classes in the works for the training of the young men under him, and took a keen interest in their welfare.
His death took place at his residence in Surbiton, after a serious operation following a scald on the leg, on 7th November 1912, in his seventy-third year.
He became a Member of this Institution in 1886; he was also a Member of the Institution of Civil Engineers, and of the Association of Railway Locomotive Engineers, and held the rank of Major in the Engineer and Railway Staff Corps, Territorial Force.
1914 Obituary