| Year | 1944 |
| Date | 08-Jun |
| Volume | 90 |
| Issue | 2,248 |
| Page | 547 |
| Category | Electrical |
| Part | |
| Title | A Delayed-Action Circuit Breaker (for model electric railways) |
| Author | W.Luttmer |
| Notes | With leads for connecting to track circuit, the complete circuit-breaker panel layout, method of testing the resistance wire, pushbar assembly, trip blade and contact spring |