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).
Product guarantee certificate for the Saunders Petrol Saver from The C.P. Preston Co., Ltd.
| Identifier | ExFiles\Box 44\1\ Scan015 | |
| Date | 11th January 1914 | |
| The Preston Guarantee 4037 At different times in the past some manufacturers have sold their goods under a guarantee which, on being looked closely into, has left them a loophole to avoid fulfilment of their obligations. The C. P. Preston Company, Ltd., as manufacturers of the Saunders Petrol Saver, to show their complete confidence in the claims they make on behalf of this device, do not qualify their guarantee in any way. If the device does not give complete satisfaction after 14 days' trial they will with pleasure refund cost of same on it being returned to them, or their agents from whom it was obtained. If, after trial, it is desirable for any reason to remove the Saunders Petrol Saver, a standard 3/8in. gas plug can be screwed into the hole drilled to receive the valve, and the intake pipe will be as good as before. The Saunders Petrol Saver is the only auxiliary air-valve on the market that can be fitted and then removed without causing any injury to the induction pipe. THE C. P. PRESTON CO., Ltd., MANUFACTURERS, 112 HIGH HOLBORN, LONDON, W.C. [Guarantee Certificate Section] The Preston Guarantee We hereby guarantee that if the Saunders Petrol Saver supplied by us to Col. Wilkinson does not give satisfaction after a fair trial of fourteen days from date we agree to refund cost of same on return of goods (Signed) Per Pro. The C P Preston Co. Ltd Dated Jan 11th, 1914. This certificate is valueless unless filled in with purchasers name & date of sale | ||