| Year | 2004 |
| Date | 23-Jul |
| Volume | 193 |
| Issue | 4,226 |
| Page | 80 |
| Category | Locomotive |
| Part | |
| Title | Combination Screw/Lever Reverser |
| Author | Neil Read |
| Notes | Describes an intriguing device sent by Fred Laroche. Origins, slide, sliding block, screw and screw collar, nut, keep plate, handle bracket and handle, lever, cams, cam bar, spring, assembly, see 53 1281 630 |