| Year | 2020 |
| Date | 04-Dec |
| Volume | 225 |
| Issue | 4,653 |
| Page | 733 |
| Category | Stationary Engine |
| Part | 8 |
| Title | Grasshopper Haulage Engine - Valve Linkage |
| Author | Stewart Hart |
| Notes | Completes his trilogy of stationary engines with a grasshopper haulage engine. Valve linkage assembly, valve crank arms, valve crank pin, forked link, swivel pin, handle, cross arm assembly |