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).
Bentley Motors' adoption of 'HALO' brake lining material, with an appended extract from 'The Autocar' magazine.
| Identifier | ExFiles\Box 26\4\ Scan189 | |
| Date | 1st December 1923 | |
| X4388 BY.{R.W. Bailey - Chief Engineer} from ROY.{Sir Henry Royce} c. to Hs.{Lord Ernest Hives - Chair} ROY{Sir Henry Royce}2/MG1.12.23 I see in this week's "AUTOCAR" on page 1094 Mr. Bentley, of Bentley Motors Limited states they have now standardized an improved Brake Lining, and presumably this is the special "HALO" Material put forward by the Scandinavia Belting Company, of which we have samples now under observation. You will recollect the Scandinavia representative, Mr. Dalmuir (?) made this claim when he was here some few weeks back, and stated that Bentley Motors had adopted their "HALO" material on all their Brakes, and they were able to pull up a Bentley car at 30 miles per hour in 15 yards, other users of "HALO" being, Austin, Austro-Daimler, Armstrong Siddeley, Triumph Cycle Company. ROY.{Sir Henry Royce} EXTRACT Page 1094 THE AUTOCAR. November 30th.1923 New type of Brake Lining Adopted. "A point of passing interest is that we are now using a brake shoe lined with a special type of friction fabric. Hitherto in spite of the great disadvantage of noisiness, we have used cast-iron shoes, for the simple reason that they could be absolutely relied upon. For several years we have been testing all kinds of brake linings, but it is only recently that we have been able to find one that equals cast-iron in respect of dependability whilst offering incidental advantages of its own. It may be mentioned that one point of importance in connection with cast-iron is that the driver knows instantly when the shoes rub, however lightly it may be, on the drums. When the brakes are fabric covered, he is likely to be in blissful ignorance of this state of affairs should it occur, and we have therefore introduced into our new cars a friction-controlled compensating gear which ensures that any rubbing of the brake surfaces will not take place unless at the exact time that it is required." | ||