TOOTHED REDUCTION GEAR CONTROL MECHANISM Russian patent published in 1997 - IPC

FIELD: mechanical engineering; transmissions of self-propelled vehicles. SUBSTANCE: to provide forward movement of self-propelled vehicle rod 11 is shifted to the left by means of control lever 17. Fork 2, thrusting against stop 16, brings toothed sleeve 9 into meshing with toothed rim 5 of gear 3. Toothed sleeve 9, coupled with fork 19, is brought into meshing with toothed rim 5 of second gear 3 under action of spring 21 which engages with end face of fork 19. This provides engagement of forward gears with shafts 7 and transmission of power from driving gears 2 through driven gears 3 to shafts 7. EFFECT: enlarged operating capabilities, simplified design, reduced metal usage. 2 dwg