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 Wilmot-Breeden Ltd discussing a bumper bar sketch and a Bendix hydraulic torque converter.
| Identifier | ExFiles\Box 118\3\ scan0159 | |
| Date | 18th December 1939 | |
| TELEPHONE: CENTRAL 8641 (18 LINES) TELEGRAMS: "BUMPERS, BIRMINGHAM". WILMOT-BREEDEN LTD EASTERN WORKS BIRMINGHAM 1 MANAGING DIRECTOR'S OFFICE 18th December 1939. A.{Mr Adams} Robotham Esq. Messrs. Rolls-Royce Ltd. DERBY. Dear Robotham, 1023 Thank you for your letter of the 15th instant, together with PL.70, sketch of the Bumper Bar. I will give this immediate attention, and communicate with you after we have studied the matter. I certainly think that from your point of view you should have the type of bar which is hardened and tempered, necessitating with this particular shape, or at any rate a shape of this description, dies for quenching under pressure after hardening. I think you saw the plant we have for this, when you visited our Works recently. Regarding the Bendix hydraulic torque converter, I unearthed particulars of this from the number of "Automotive Industries" which you gave me, and the particulars from that are being examined. I feel, however, that although it contains the ordinary essential elements of a device of this kind, namely, pump, turbine and reaction member, the main problem associated with efficiency obtained from a streamline flow of the fluid does not appear to be solved, and one could readily imagine that it failed on that particular score. It would be very interesting to know officially, however, what were considered to be | ||