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).
Provisional patent specification for an improved brake drum cooling design.
| Identifier | ExFiles\Box 147\1\ scan0050 | |
| Date | 2nd August 1935 | |
| x 1747 To By.{R.W. Bailey - Chief Engineer} From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. to Sg.{Arthur F. Sidgreaves - MD} c. to Wor.{Arthur Wormald - General Works Manager} PROVISIONAL PATENT SPECIFICATIONS. We have recently been doing some work to try and improve the cooling of our brake drums. The project was started because we found that the drums did not get any cooling from the forward motion of the car. Brake fading is of course a universal problem at present. Our endeavour has been to make the fins on the drum such a shape that air would be drawn across the face of the drum. Temperature measurements indicate that this can be done. The attached blue print shews what we have arrived at so far. Naturally the experiment is only in it's initial stages and may not be as valuable as we think at present, but it should be worth a provisional patent if such can be obtained. Martindale is working on the job. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||