| Year | 1919 |
| Date | 14-Aug |
| Volume | 41 |
| Issue | 955 |
| Page | 157 |
| Category | Electrical |
| Part | |
| Title | Modern High Speed Influence Machines |
| Author | V.E.Johnson |
| Notes | Instability in influence machines, how the replenisher worked, the distribution of electric charges on differently shaped conductors, a machine without brushes, the writer's latest machine showing "chargers" & replenishers, the idea carried out in the machine, the collecting combs, their supports and the discharging balls, materials for discs, liquid insulators, efficiency and insulation, practical uses of electrical influence machine, electrical charge on different shapes |