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).
Design and manufacturing suggestions for various armature and coil components.
| Identifier | ExFiles\Box 39\2\ Scan063 | |
| Date | 1st April 1921 | |
| R.R. 256A (100 T) (S.H. 728, 10-12-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 1947 BY/WER2/EF4. 4. 21. Contd. D.{John DeLooze - Company Secretary} 1584 - Banding Wire Clip. D.{John DeLooze - Company Secretary} 1585 - " " Insulation. D.{John DeLooze - Company Secretary} 1586 - " " D.{John DeLooze - Company Secretary} 1587 - 27 Slot Armature Assembly. D.{John DeLooze - Company Secretary} 1588 - Slot Lining. D.{John DeLooze - Company Secretary} 1589 - Separator. D.{John DeLooze - Company Secretary} 1590 - 31 Slot Armature Assembly. D.{John DeLooze - Company Secretary} 1605 - Armature Coil. D.{John DeLooze - Company Secretary} 1606 - Winding Diagram. D.{John DeLooze - Company Secretary} 1607 - Armature Coil. D.{John DeLooze - Company Secretary} 1608 - Winding Diagram. (X) D.{John DeLooze - Company Secretary} 1667 - Core Plate (Driving End). (X) D.{John DeLooze - Company Secretary} 1668 - Core Plate (Commutator End). D.{John DeLooze - Company Secretary} 1669 - Core Plate Insulation. D.{John DeLooze - Company Secretary} 1670 - " " " D.{John DeLooze - Company Secretary} 1690 - Pinion. (X) Regarding these details please receive three prints one of which should be handed to Mr. Walker (Pattern Shop). Regarding D.{John DeLooze - Company Secretary} 1575, D.1576, D.1669 and D.1670 Core Plate Insulation, we would suggest that for the experimental Armatures you do not have these pieces moulded by outside firms with the consequent cost of expensive moulds, and we suggest that strips of Micanite are lapped on to the Core Plates and heated on with Shellac, or alternately strips of Varnished Cambric could be half lapped and ironed on with Shellac. Regarding D.{John DeLooze - Company Secretary} 1535 Commutator Insulating Segment we would point out that the standard Starter Motor Insulating Segment E.{Mr Elliott - Chief Engineer} 13725 could be cut in two and used, thus saving the necessity of buying material of the new size from outside firms. Regarding the Armature Coils D.{John DeLooze - Company Secretary} 1605, D.1607 it will be noted that the drawings call for the Coils to be insulated with tape butt joint, but, if after taping up several coils and placing them in the slots for trial it is found that there is sufficient room on the end windings, then we wish to have the Coils taped up half lap instead of butt joint. BY/WER. WR. | ||