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).
Design drawing for a Hispano Brake Shoe with measurements.
| Identifier | ExFiles\Box 22\1\ Scan032 | |
| Date | 1st February 1924 guessed | |
| HISPANO BRAKE SHOE, Create Balanced., 3/8" each end of Shoe, 15 1/2", 113°, Guide For Pipe, Steel faced for cam action, 4 1/16", 1.175", 3/4", 2 1/8", 1/4", 12 1/8", 1 1/8", 13/16", 5/8" | ||