From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Advertising leaflet for the 'ARIS' Sparking Plug, detailing its features and benefits.
| Identifier | ExFiles\Box 33\3\ Scan056 | |
| Date | 8th March 1920 guessed | |
| “ARIS” SPARKING PLUG. REGISTERED & PATENTED ALL OVER THE WORLD. The Longest Life. The Highest Efficiency. DESCRIPTION— THE “ARIS” Sparking Plug is mechanically constructed throughout and has no plaster or cement packing. (A) The “ARIS” Sparking Plug does not leak. 1st. BECAUSE its metallic and plastic metal joints are made under heavy pressure. The joints and insulation are reinforced by means of lock nuts. The centre rod is made of the best steel. 2nd. BECAUSE every plug is tested before it leaves the workshops under paraffin oil, with an air pressure of 600 lbs. per sq. inch for a period of five minutes. (B) The “ARIS” Sparking Plug gives a good spark. 1st. BECAUSE the insulator is on the Steatite (Bosch) basis, with a very high ohmic resistance (2 megohms). 2nd. BECAUSE the central and lateral electrodes are made of pure nickel (99%) in order to reduce to the minimum the calamine deposits. 3rd. BECAUSE the shape of the electrodes is designed to reduce the deposit of oil, and to give a rich spark. The ‘Aris Control Department test the spark of all plugs under a pressure of 142 lbs. per sq. inch. The “Aris” Sparking Plug for Cars and Motor Cycles is built on the same principle as the “Aviation” type officially adopted by the British and French Air Ministries for all sur-compressed rotary or fixed engines, including the 220 H.S. The “Aris” Sparking Plug is supplied with either Universal or American threads. TELEPHONE: CARDIFF, 306. TELEGRAMS: "CLIMAX. CARDIFF." THE BRITISH ARIS SPARKING PLUG COMPANY, LTD LONGEST :: BEST :: :: LIFE. :: EFFICIENCY. Patented all over the World. REGISTERED OFFICE— 65/68, Merchant’s Exchange, CARDIFF LONDON OFFICE— 5, Copthall Court, LONDON, E.C. 2. Sole Rights—United Kingdom, British Colonies, Dominions and Protectorates. McL., F109. | ||