| Year | 1913 |
| Date | 24-Apr |
| Volume | 28 |
| Issue | 626 |
| Page | 401 |
| Category | Steam |
| Part | |
| Title | Designing Small Power Boilers and Feed Pumps |
| Author | V.W.Delves-Broughton |
| Notes | Arrangement of variable stroke pump, showing simple method of cutting out flutes for guides of wing valve, section through dead-weight safety valve, an unsafe type of safety valve, section through direct acting spring valve |