1914 - 1937

1914-1918 - WW1
Pepper Box type - Aircraft plugs manufactured for the Royal Flying Corps

1916 - The factory in St. Peter's Road, Rugby was completed

1919 - name shortened to Lodge Plugs Ltd.

1920 - Publication of the first plug Recommendation Chart in the motor industry, from which a motorist could see at a glance the type of Lodge plug most suited to his vehicle.

1929 - The introduction of the C3 plug. This plug had a mica-wrapped core round the electrode, and was finished externally with a steatite sleeve as a protective cover. Its versatility was shown in 1929 when Sir Charles Kingsford Smith chose it for his record non-stop flight from England to Australia, in the "Southern Cross." It was the parent of the well-known BR series of Lodge motor-racing plugs, and a stepped-up sales campaign soon made it extremely popular with the ordinary motorist.

1931 - Research work that was started around 1926 resulted in the A30 and the KR3 series being launched. The latter went on to win a great name for itself as the plug used by the British team in the Schneider Trophy Race.

1935 – Responding to demand from the motor racing fraternity, alumina Insulators, were introduced. This pink ceramic that came from sintered aluminium oxide, possessed remarkable thermal, electrical and mechanical properties. As an insulator it had all the advantages of mica, yet none of its drawbacks.

1937 - George Eyston in "Thunderbolt" raised the land speed record to 345 m.p.h. A record he broke the following year, taking it 357 m.p.h. In Eyston's records Sintox was already playing its part, standing up stoutly to temperatures and pressures under which the older types of insulation would certainly have failed.