| Year | 1909 |
| Date | 02-Sep |
| Volume | 21 |
| Issue | 436 |
| Page | 238 |
| Category | Queries and Replies |
| Part | |
| Title | 21816. Valve Motion Queries |
| Author | A.M.E. |
| Notes | Triple expansion engine crank positions, finding radius of curved link (launch pattern), imaginery position of motion, open & crossed eccentric rods, approximate position of eccentric & rods |