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1930 Name changed
1936 It was announced that the interests of Associated Locomotive Equipment Ltd have been identified with those of Caprotti Valve Gears Ltd and that Mr F. J. Kuretschka was now managing director of both companies.
1936 Alternative arrangements for manufacture of Caprotti valve gear for William Beardmore and Co were under discussion due to the recent announcement of the association of interests of Caprotti with Associated Locomotive Equipment who were owners of the competitor Lentz poppet valve.
1945 Heenan and Froude acquired the holding in Associated Locomotive Equipment Ltd from Caprotti Valve Gears Ltd. This company now controlled all of Heenan and Froude's trading and patent rights in valve gears.
1961 Locomotive engineers, manufacturing precision equipment for railway purposes. 
1962 the contribution to Heenan and Froude by Associated Locomotive Equipment in recent years had been negligible but efforts were being made to develop a new line to replace valve gear for steam engines.