| Year | 1924 |
| Date | 13-Nov |
| Volume | 51 |
| Issue | 1,229 |
| Page | 541 |
| Category | Electrical |
| Part | 5 |
| Title | Electrical Locks |
| Author | B.Clements-Henry |
| Notes | A Universal Fastening. Elements of double-bolt fastening, staples shackles etc., alternative electrical controls, central control, vertical rise for pendant-pivots |