| Year | 1918 |
| Date | 19-Sep |
| Volume | 39 |
| Issue | 908 |
| Page | 167 |
| Category | Practical Letters from Our Readers |
| Part | |
| Title | Steam Motor Cycles |
| Author | K.N.Harris |
| Notes | Auxiliary balancing piston for slide valve, a "silent" type burner with regulator, illustrating the principle of ball-bearing crosshead |