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A. L. Beattie

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A. L. Beattie was a pioneering locomotive engineer. Although not born in New Zealand, he gained fame as the Chief Mechanical Engineer of the New Zealand Railways Department (NZR) between 1900 and 1913. During this time, Beattie designed the Q class, the first original 4-6-2 steam locomotive class in the world, and he was also one of the earliest people to utilise other wheel arrangements.

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[edit] Career

In 1900, the previous Chief Mechanical Engineer, T. Rotherham, left NZR to work for the Western Australian Government Railways and was succeeded by A. L. Beattie.[1] Beattie went on to design a number of innovative and original locomotives during his thirteen years as Chief Mechanical Engineer. He retired in 1913 and was succeeded by H. M. Jackson.

[edit] The Q class

Beattie was almost instantly faced with a problem upon appointment as Chief Mechanical Engineer: New Zealand's railway network was expanding, traffic volumes were growing, faster speeds were required, and accordingly, a more powerful type of locomotive was required.[2] Furthermore, although this new class was to haul the heaviest and fastest expresses, it was to burn low grade lignite coal from Canterbury and Otago. Baldwin Locomotive Works recommended a camelback design to solve the problem, but Beattie conceived the idea of an enhanced 4-6-0 UB class locomotive with a two-wheel trailing truck to support a wide Wootten firebox.[3] This created a 4-6-2 wheel arrangement under Whyte notation, and an order was placed with Baldwin for thirteen locomotives to Beattie's specifications in 1901. These locomotives became the Q class, and the first entered service on 24 December 1901[4] after being shipped across the Pacific Ocean. This voyage led to the 4-6-2 arrangement being nicknamed the Pacific type, and it became a popular arrangement worldwide.[5]

[edit] The A class

Described as the "triumph of Beattie's term in office", the A class was designed in 1905 for service on the Main South Line and the nearly-completed North Island Main Trunk Railway [6]. It was a further development of the Q class and earlier 4-6-0 designs such as the U class, seeking to rectify faults with those designs and improve efficiency and hauling power. Beattie created the initial design before passing it on to Chief Draughtsman G. A. Pearson to complete,[7] and when the first members of the A class entered service in 1906, they were considered to be the country's most handsome locomotives.[8]

[edit] The X class

After pioneering the Pacific wheel arrangement, Beattie went on to pioneer the 4-8-2 Mountain type. The A class locomotives were not sufficiently powerful to tackle the steep grades on the North Island Main Trunk, and Beattie's solution was the 4-8-2 X class.[9] Designed in 1908 for the opening of the Trunk, the first of eighteen Xs entered service on 9 January 1909,[10] and they were some of the largest and most powerful locomotives in New Zealand.[11]

[edit] Other locomotives

Beattie introduced a number of other classes during his term, though none so notable as the Q, A, and X classes. These included tank locomotives such as 1903's WF class, 1910's WG class, and 1913's WW class.[12] Beattie was also one of, if not the first to employ the 4-6-4T arrangement - the 1902 conversions of three B class locomotives into the WE class and the WG and WW are some of the earliest examples in the world of the 4-6-4T arrangement.

[edit] References

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