Haddon Engineering Works
George Constantinesco interested Walter Haddon in his invention of means of transmitting power by essentially musical means.
An experimental establishment (Haddon Engineering Works) was set up at Alperton, near Ealing, where he carried out experiments on wave power transmission. This establishment was called the "Sonic Works"
WWI Constantinesco developed the "C.C." interrupter gear, which enabled the problem of firing from a machine gun through the propeller of an aeroplane to be satisfactorily solved. The success of the gun gear led eventually to the Alperton establishment being taken over by the Admiralty and to Mr Constantinesco's being officially employed to conduct research work on other service applications of his principle, which were kept secret although seem not to have been put to use during the War. Nevertheless this laid the foundation of a very important and interesting branch of the subject, namely the application of wave transmission to the production of rotary motion.
1919 The Sonic Works were in effect a large research laboratory which had been provided by the Admiralty during the war to allow Mr George Constantinesco to develop his various inventions. Queen Mary and the Queen of Roumania visited the Sonic Works in March 1919[1]
1920 Sonic Works were taken over by the Admiralty Engineering Laboratory[2]