| Year | 1953 |
| Date | 30-Apr |
| Volume | 108 |
| Issue | 2,710 |
| Page | 540 |
| Category | Workshop |
| Part | |
| Title | Making Grease Cups |
| Author | "Duplex" |
| Notes | Two finished cups and the special key, dimensions of the lubricator body and cup, machining sequence for the body, machining the cup |