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).
Description of an electromagnetic gear and clutch mechanism with a detailed component diagram.
| Identifier | ExFiles\Box 128\1\ scan0104 | |
| Date | 7th October 1930 | |
| -13- Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson}3/MJ.7.10.30.Contd. operation seems unnecessary, apart from this the gear has an advantage over the Maybach in that top gear is direct drive. Additionally the gear can also be changed without the engine and axle speeds being synchronised. The driving shaft A is cut in two. The front half carries an annulus B, on the periphery of which is fixed an electro magnet C. which turns integrally with it. The current which excites this magnet is introduced by terminal X. and a brush. [Image of an exploded view of a gear mechanism] Fig. 1. — Le relais magnetique Voisin A, arbre de transmission; B, couronne interieure dentée; C, armature de l'électro mobile; D, arbre récepteur; E, satellites; F, planétaire central mobile; H, armature de l'électro fixe; I, emplanture; J, carter; X, frotteur; Y, verrou; Z, anneau du verrou. The rear portion D.{John DeLooze - Company Secretary} of the clutch shaft carries three planets E.{Mr Elliott - Chief Engineer} Floating on this same shaft is a sun wheel F.{Mr Friese} solid with a plate G.{Mr Griffiths - Chief Accountant / Mr Gnapp} Finally an electro magnet H.{Arthur M. Hanbury - Head Complaints} is carried in the rear part of the tube I. When assembled the planets E.{Mr Elliott - Chief Engineer} are in constant engagement with the sun wheel F.{Mr Friese} and the annulus B. When neither electro magnet is excited, the plate C. and sun wheel F.{Mr Friese} turn freely. The shaft D.{John DeLooze - Company Secretary} has then no tendency to rotate and the car is neutral. When C. is excited the plate G.{Mr Griffiths - Chief Accountant / Mr Gnapp} is locked to it magnetically. The annulus B. and sun wheel F.{Mr Friese} being simultaneously locked, the planets E.{Mr Elliott - Chief Engineer} can have no independant | ||