| Year | 1940 |
| Date | 05-Dec |
| Volume | 83 |
| Issue | 2,065 |
| Page | 445 |
| Category | Inventionsà Successful and Otherwise |
| Part | 1 |
| Title | A Gas-operated Vacuum-cleaner. |
| Author | B.C.J. |
| Notes | Introductory, gas v. electricity, a sectional view of the machine, it worked! The ignition system, no gas valve, silencing, the air-inlet valve and gas ports |