| Year | 1940 |
| Date | 24-Oct |
| Volume | 83 |
| Issue | 2,059 |
| Page | 321 |
| Category | Internal Combustion |
| Part | |
| Title | An Experimental Rotary Valve for I.C. Engines |
| Author | H.W.Attree |
| Notes | General arrangement, valve spindle bearings, the valve-setting diagram, section showing general arrangement, view of valve showing port and oil groove |