Torque distributor or differential gearing

摘要

430,242. Differential or balance gearing. LAWLER, F. P., 251, Kearney Street, San Francisco, U.S.A. Nov. 11, 1933, No. 31512. Convention date, Dec. 27, 1932. [Class 80 (ii)] Differential gearing is adapted to drive both axles D, E, Fig. 1, of a vehicle so that, if only one wheel grips, there is still a drive. Splined at 24, Figs. 3 and 10, on the axles E, D, are two gear members 22 which are formed internally at 22 as eccentrics and externally as cylinders adapted to turn inside and relatively to an enveloping drum C, Fig. 1, secured to a driving crown wheel 4. Engaging and turnable loosely within the eccentrics 22 are two hollow compensating cylinders 19, Fig. 4, and 19, Fig. 9, respectively, which have solid ends each with a diametral slot 20. These two slots 20 engage slidably with lugs 18, 18, Fig. 5, on a driving plate 13 which has aligned arms 14 adapted to reciprocate through driving apertures 8, Fig. 2, in the drum C. The drum C is in two parts bolted together, windows 7 being provided for inspection and lubrication. The compensators 19, 19 are connected to one another so as to maintain an effective drive while wabbling inside the eccentrics 22 during differential action. To this end, a connecting disc 15, Fig. 6, is turnably supported in a central aperture in the plate 13, Fig. 5. The plate 15 has two off-set cylindrical through holes 15a, 15b. Carried loosely in the hole 15 is a cylindrical pin 16, Fig. 7, having a rectangular lug 17 across one end engaging a cross slot 21, Fig. 4, on one side of the slot 20 in the compensator 19. Carried loosely in the other hole 15b is an oppositely-directed pin 16, Fig. 8, with an end lug 17 engaging a cross slot 21, Fig. 9, in the other compensator 19, the two slots 21 being in line on opposite sides of the slots 20 and lugs 18, 18. The compensators 19, 19 are wide enough not to jam within'the eccentric members 22 while driving, and they are always clear of central supporting bosses 23, Fig. 3, of these members.