Description:George Constantinesco was a Romanian-born engineer and inventor, who had gained fame by his invention of an improved version of machine gun synchronization gear (a device allowing aircraft-mounted machine guns to fire through the propeller without striking the blades themselves) whilst working for Dorman's of Stafford.
This device replaced the clumsy mechanical linkages that had been previously employed with a hydrostatic device based on his own novel theory of sonics, or 'wave transmission'.
Image and information from 'Bagnall's of Stafford', by courtesy of Mr. Allan C. Baker, co-author with the late T.D. Allen.