| Year | 1952 |
| Date | 10-Apr |
| Volume | 106 |
| Issue | 2,655 |
| Page | 484 |
| Category | Workshop |
| Part | |
| Title | Building a Pulley for a Triple V-Belt Drive |
| Author | "Duplex" |
| Notes | The two pulleys bolted together, adapting the additional two-groove puley, no projections, trial and error, showing the meyhod of assembly |