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).
Advertisement for Pognon sparking plugs, with a handwritten note, and a for sale listing for a 1913 Bianchi car.
| Identifier | WestWitteringFiles\F\May1921\ Scan3 | |
| Date | 5th March 1921 | |
| THE AUTOCAR. ADVERTISEMENTS.—SUPPLEMENT. MARCH 5TH, 1921. lxv. THE LIFE OF A PLUG IS IN THE PORCELAIN ! POGNON The Aristocrat of Sparking Plugs Pognon Plugs are insulated with finest French Porcelain, the best and toughest insulator yet discovered. Porcelains made in one piece are subjected to an immense strain, owing to the difference in temperature between the top and bottom of the plug. This is the cause of cracks and loss of insulation. By employing three separate porcelains no strain is set up, the porcelains will not crack, and insulation remains perfect. Pognon Plugs are easily taken to pieces for cleaning, and all parts are replaceable. There's a model for every car—Fit them to yours! [Table of Spark Plug Models and Prices] Type mm. | Description | Price each. 'B' 18 x 150 | for most English and Continental Cars | 5/6 'C' 18 x 150 | Platinum Electrode... | 8/- 'D' 18 x 150 | Platinum Electrode... | 8/- 'E' 24 x 150 | for Peugeot, Rolls-Royce... | 7/6 'F' 18 x 150 | long reach for Renault, Daimler... | 7/6 'G1' 21 x 180 } for American Cars... | 5/6 'G2' 22 x 140 } 'GB' 22 x 140 | for Buicks... | 5/6 'M' 18 x 150 | for motor cycles... | 4/6 'R' 18 x 150 | for Light Cars... | 5/6 SPECIAL 'FORD' MODELS. 'A' metric... | 5/- 'G3' 1/2-inch... | 5/6 [Handwritten note over the table] We do not use 24 m/m Plugs now. SOLE CONCESSIONNAIRES FOR THE BRITISH EMPIRE: MORRIS, RUSSELL & CO., LTD. 163-165, GREAT PORTLAND STREET, LONDON, W.1. 68, GREAT EASTERN STREET, LONDON, E.C.2. 52, GEORGE STREET, EDINBURGH Telephones: Langham 1,220, 4 lines. Telegrams: 'Luminously, Phone, London.' FOR SALE Privately Owned 1913 25 h.p. BIANCHI Saloon Coupe, painted lake, black wings by Salmons, repainted last June. Photograph taken three weeks ago. Car in good condition throughout and has always been very carefully looked after. Owner having bought a 4-seater open touring car wishes to sell the above and will not prejudice sale by expecting high price or refusing reasonable offer. In use on South Coast but would be driven a reasonable distance for a genuine enquirer. Electric Light, Bosch Dual Ignition, Speedometer, Clock, and numerous spare parts. Box No. 2,396, c/o 'THE AUTOCAR,' 20, Tudor St.{Capt. P. R. Strong}, E.C.4 MENTION OF 'THE AUTOCAR,' WHEN WRITING TO ADVERTISERS, WILL ENSURE PROMPT ATTENTION. A39 | ||