From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Diagram showing the arrangement of coils within an armature slot.
| Identifier | ExFiles\Box 34\3\ Scan107 | |
| Date | 25th July 1919 | |
| X. 2642 B G 4475 19 S.W.G WIRE (.040) .055 COVERED DIA MANILLA PAPER TROUGH .005 THICK MANILLA PAPER .005 THICK MANILLA PAPER .003 THICK SILK TAPING .0015 THICK ARRANGEMENT OF COILS IN ARMATURE SLOT NOTE 3 WIRES in PARALLEL in EACH SECTION 2 TURNS PER SECTION 8 SECTIONS PER SLOT SCALE 10 SEC. S.S. Lap Wound Forward pitch 25 virtual conductors Backward pitch 23 virtual conductors Handwritten notes: No. 584 Conductors (virtual) 39 (for half) 1308 (for per slot) (virtual) 1 virtual conductor = 4 side by side x 2 deep CMMW G 4475 | ||