| Year | 1921 |
| Date | 29-Dec |
| Volume | 45 |
| Issue | 1,079 |
| Page | 574 |
| Category | Workshop Topics |
| Part | |
| Title | The Application of the "Walram" Back Gear for Cutting Worm Threads |
| Author | |
| Notes | A Job for the "Walram" gear, a criticism of the proposed worm cutting train, general description of "Walram" gear, the "Walram" table, a comparison of the old and new type gears, some other attachments by this firm, the application of the special train |