| Year | 1955 |
| Date | 04-Aug |
| Volume | 113 |
| Issue | 2,828 |
| Page | 118 |
| Category | Pump |
| Part | |
| Title | Rotary Pumps and Motors. Positive Displacement Vane Pumps |
| Author | "Artificer" |
| Notes | The Gaede rotary, the Varley vane, the "Crown" type E vane, examples of rotary air compressors, D.H.Chaddock's model Zoller type supercharger, "Comet" ball-bearing type vane, R.A.F. type vacuum, Vickers-Detroit hydraulic vane, Desoutter drill gun |