| Year | 1924 |
| Date | 04-Dec |
| Volume | 51 |
| Issue | 1,232 |
| Page | 621 |
| Category | Locomotive |
| Part | |
| Title | Walschaerts Valve Gear for Small-Scale Locomotives |
| Author | I.P.M. |
| Notes | Two forms, setting out when D slide valve is used, effect of small return crank on radius rod, effect of linking up, setting out for small locomotive, obtaining value of exhaust lap, vibrating or lap lever, finding radius of return crank, dispensing with forks or knuckles, experimental construction details, radius rod, forked and slotted, machining radius of links, yoke pieces, return crank connecting rod, forming rounded fork |