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 Ransome & Marles Bearing Co. Ltd. discussing bearing separator design and patents.
| Identifier | ExFiles\Box 136\2\ scan0071 | |
| Date | 28th March 1939 | |
| RANSOME & MARLES BEARING Co., Ltd. - 2 - F.J. Hardy, Esq., Messrs. Rolls-Royce, Ltd., D E R B Y . 28-3-39 side of the raceway to the other. Under such conditions, too small a clearance in the separator pockets would cause binding and ultimate failure of the separator. Although the bearing manufacturer can thus anticipate most of the separator trouble that might occur due to improperly mounted or misaligned bearings, excessive clearances in the ball pockets must be avoided if the separator is to retain its properly concentric position in the bearing. You will note that they do not give any indication as to whether the holes are elongated or otherwise, but on examining some of their pressed cages this appears to be a possibility, while their remarks to the effect that too much slackness would cause other troubles would appear to cover the steps which we have taken, and therefore, under the circumstances, it does not appear that any reasonable chance is present for the taking out of a patent. I trust this is quite clear, and hope to see you when next I visit Derby. Kindest regards, Yours sincerely, F.O. Hickling | ||