| Year | 1955 |
| Date | 26-May |
| Volume | 112 |
| Issue | 2,818 |
| Page | 595 |
| Category | Pump |
| Part | |
| Title | Rotary Pumps and Motors. A Practical Review of Their Design and Construction |
| Author | "Artificer" |
| Notes | Early history, early example fron Agricola's "De Re Metallica", Capt. Bentinck's marine chain pump, positive displacement rotary pump from Ramelli's "Le Diverse et Artificlose", modern Rotary Pumps |