Joseph Summers turboprop airliner (the Vickers Viscount) on 16 July 1948 and the initial flight of Britain's first four-jet bomber (Vickers Valiant) on 18 May 1951. By the time he retired, he had achieved 366 general types, second only to the Guinness world record holder Eric "Winkle" Brown who has 487. Summers still holds the world record of 54 "Prototype First Flights". On 15 December 2016, in a Boroondara Council meeting, Joseph Summers had the street formally known as Oliver Street renamed, to honour his work in the military. Summers married Dulcie Jeanette Belcher in 1922 in Sculcoates, Yorkshire. Summers died on
Vickers-Armstrongs its acquisitions Vinters plc. Vickers-Armstrongs inherited the Vickers machine gun of 1912 used in World War I from Vickers Limited. There were other Vickers machine guns aside from the regular water-cooled model (known universally as the "Vickers"): the Vickers-Berthier (VB) machine gun used by the Indian Army, the Vickers "K" .303 aircraft machine gun developed from it, and the Vickers "S" 40 mm aircraft gun. An unusual machine gun also made was the Vickers Higson. Vickers produced larger weapons such as the Ordnance QF 2-pounder gun used on tanks. In 1948 Vickers bought the Australian business of Charles Ruwolt Ltd