| Year | 1941 |
| Date | 26-Jun |
| Volume | 84 |
| Issue | 2,094 |
| Page | 512 |
| Category | Improving the Two-Stroke |
| Part | |
| Title | "Valves for the Valveless (Valves in two-stroke engines) |
| Author | Edgar T.Westbury |
| Notes | Timing of rotary admission valves, other forms of valve-gear, a novel form of piston-head transfer valve, another experimental disc rotary valve, a twin rotary-admission valve aero engine, a design for a 30 c.c. twin two-stroke |