| Year | 1969 |
| Date | 18-Jul |
| Volume | 135 |
| Issue | 3,373 |
| Page | 714 |
| Category | Jeynes' Corner |
| Part | |
| Title | Free piston engines and pumps |
| Author | E.H.Jeynes |
| Notes | "Cornish cylindered" pump at Newdigate Colliery, Joseph Evans & Co., Davey compensating engine with Corliss type valves, Worthington Duplex pump |