GB280868A - Improvements in variable-speed gearing - Google Patents

Abstract

280,868. Warner Gear Co., (Assignees of Plexico, R. S.). Nov. 18, 1926, [Convention date]. Variable - speed gearing with aligned driving and driven shafts 8, 15, Fig. 1, and a parallel countershaft 20 comprises a double reducing eccentric train for obtaining the speed next below the direct drive. The countershaft 20, which is constantly driven by a pair 10, 23 carries fixed gears 18, 19 adapted to be engaged by sliding coupled gears 16, 17, for the third and lowest speeds. respectively. There are idlers 23 for reversed driving. A hollow eccentric shaft 24 supported in fixed bearings 25, 26 constantly meshes at one end through an external gear 31 with an internal wheel 32 integral with the driven shaft 15. The eccentric shaft 24 meshes at its other end through an internal wheel 27 with a loose external gear 28 carried loosely on the end of the shaft 8. A clutch shaft 33 is supported axially in line with the shafts 8. 15 and has a clutch head 40 constantly engaged by long clutch teeth 39 internal to the gear 10. When the shaft 33 is slid to the right, a clutch ring 36 upon it engages an internal clutch 35 on the shaft 15, so that there is a direct clutch drive, the eccentric train running idly. When the shaft 33 is moved to the left, a clutch ring 41 upon it engages clutch teeth 30 internal to the loose gear 28. The second-speed drive is then effective through train 8, 39, 40, shaft 33, 41. 28, 27. hollow shaft 24, 31, 32, 15. The striking-gear for the shaft 33 is shown also in Fig. 4. A striking ring 42 outside the shaft 24 is connected by pins 44 passing through slots 45 in the shaft to an internal ring 46, which is eccentric to the shaft 33 but constantly engages a striking-groove 47 thereon.