| Year | 1908 |
| Date | 23-Apr |
| Volume | 18 |
| Issue | 365 |
| Page | 400 |
| Category | Workshop |
| Part | |
| Title | The Design and Construction of Ball Bearings |
| Author | "Zodiac" |
| Notes | To eliminate rubbing of balls, different sized ball bearings coupled together, travel of balls in different sized ball races, bearings with top & bottom balls under load, "radial" bearing with ball cage |