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1886 S. P. Thompson Dynamo-electr. Machinery (ed. 2) vii. 121 This pattern differs from that of the better known ‘A’ Gramme in using salient poles instead of having the ‘consequent poles’ at the middle points of the electro~magnets.

1905 G. F. Goodchild & C. F. Tweney Technol. & Sci. Dict. 632/2 Salient Pole, when the poles of a dynamo project inward towards the armature, from a closed ring of iron, and are each magnetised by one coil only, they are termed Salient Poles, as distinguished from Consequent Poles.

1910 Hawkins' Electr. Dict. Salient Poles, the poles of a dynamo or motor field magnet occurring at the ends of the pole pieces, as distinguished from consequent poles.

1920 Whittaker's Electr. Engineer's Pocket-bk. (ed. 4) 169 The turbo-alternator is now the standard a.c. generator, and is almost invariably built with a cylindrical (or non-salient pole) rotor, the salient pole construction being confined to slow-speed alternators and water turbine-driven alternators.

1962 Newnes Conc. Encycl. Electr. Engin. 337/2 The turbo-alternator is essentially a high-speed construction..for coupling to steam or gas turbines..the salient-pole alternator is suited to..lower speeds and may therefore be driven by water turbines or internal-combustion engines.

1970 J. Shepherd et al. Higher Electr. Engin. (ed. 2) x. 331 An alternative arrangement to having uniform slotting on both sides of the air-gap is to have salient poles around which are wound concentrated coils to provide the field winding. The salient poles may be on either the stator or the rotor.