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).
Letter from Harvey Frost & Co Ltd. regarding the properties of Jackson's Impervo tyre tube treatment.
| Identifier | ExFiles\Box 77\4\ scan0126 | |
| Date | 9th June 1922 | |
| COPY. From: - Messrs. HARVEY FROST & COMPANY LTD. 148-150, Gt. Portland Street, London, W.1. June 9th, 1922. To: - Messrs. Jackson's IMPERVO. 48, Dover Street, W.1. Dear Sirs, In reply to your enquiry we have had occasion to repair damages such as nips and bursts in tubes which had been treated with Jackson's IMPERVO, and the preparation does not affect in any way the process of vulcanisation. We confirm your statement that IMPERVO is non-flammable, this quality being of course, to its advantage. With compliments, We are, Yours faithfully, HARVEY FROST & CO LTD., (Sgd) H.{Arthur M. Hanbury - Head Complaints} J.{Mr Johnson W.M.} Garland. | ||