| Year | 1919 |
| Date | 01-May |
| Volume | 40 |
| Issue | 940 |
| Page | 327 |
| Category | General |
| Part | 1 |
| Title | The Principles of Typewriter Mechanism |
| Author | Nathan Sharpe |
| Notes | General, typelever hinged at upper end, upright typelever action, "front stroke" action, sliding type-bar action, diagram showing shift action, examples of good & bad alignment & spacing |