| Year | 1930 |
| Date | 03-Apr |
| Volume | 62 |
| Issue | 1,508 |
| Page | 317 |
| Category | Petrol Engine Topics |
| Part | |
| Title | Supercharging |
| Author | Edgar T.Westbury |
| Notes | Pump blowers, Roots blower as used on Mercedes car, positively driven rotary blowers, turbo blowers, disadvantages of supercharging, Cozette blower, for Armstrong-Siddeley "Jaguar" engine |