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 a supplementary drive system using a V-belt, clutch, and bevel-gear box to rotate wheels.
| Identifier | ExFiles\Box 147\4\ scan0195 | |
| Date | 15th May 1941 guessed | |
| has its speed increased and the other has its speed reduced and one track will run faster than the other. The direction of the turn is thus determined by the selection of the direction of the rotation of the 5 wheels 24a and 24b. The rotation of the wheels 24a and 24b is effected by a supplementary drive comprising a driving shaft 25 which is driven by a V-belt drive 26, or other suitable drive, from the crankshaft 11. A V-belt drive is 10 preferred since it will slip if it is overloaded and relieve the auxiliary drive of the overload. The shaft 25 drives a pair of driven shafts 27a and 27b at a reduced speed and in opposite directions through a clutch and bevel-gear box 28. The shaft 27a carries a gear pinion 15 29a meshing with the wheel 24a while the shaft 27b carries a gear pinion 29b meshing with the wheel 24b so that the shafts 27a and 27b drive the wheels 24a and 24b at a further reduced speed in opposite directions. The clutch and bevel gear 28 is shown in Figure 2. 20 The shaft 25 carries a driving plate 30 of a slipping-plate-clutch which also comprises a driven plate 31 and a pressure annulus 32 which is keyed to the driving plate 30 by three equally spaced lugs 33 that extend through slots in the periphery of the plate 30. Three levers 34 (of 25 which only one is shown) are pivoted on the plate 30 on three equally spaced pivots 35. The levers extend radially and each has its outer end engaged in a slot 33' in the associated lug 33 on the annulus 32 and its inner end abutting the face of a piston 36 in a cylinder 37 30 formed in the interior of the hub of the plate 30. The levers 34 extend through suitable slots 38 into the 6. | ||