| Year | 1906 |
| Date | 27-Sep |
| Volume | 15 |
| Issue | 283 |
| Page | 300 |
| Category | Electrical |
| Part | |
| Title | The Construction of an 180-watt Overtype Dynamo |
| Author | H.G.Riddle |
| Notes | Boring the armature tunnel, section through armature & commutator, cutting keyway, brush gear, boring the oil-retaining cups in pedestal, milling oil reservoirs in bearings, arrangement of bobbin winding, bobbin |