| Year | 1941 |
| Date | 04-Sep |
| Volume | 85 |
| Issue | 2,104 |
| Page | 182 |
| Category | Nautical |
| Part | |
| Title | An Impulse Gear for Operating Ship's Bells |
| Author | H.Lloyd |
| Notes | Back view, front view with clock front-plate removed, double-snail cam, contact segment and dash-pot components, lifting-piece and ratchet details, star-wheel and ratchet |