| Year | 1939 |
| Date | 29-Jun |
| Volume | 80 |
| Issue | 1,990 |
| Page | 772 |
| Category | Electrical |
| Part | |
| Title | Coil Winding Machines |
| Author | J.Gordon Hall |
| Notes | Some notes on the use of machines previously described. Method of leading out "beginning" end of winding, a method of building up bobbins, self-supporting coils, metal bobbin split for alternating current, coils and former, pert sections |