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FOUR-SPEED REVERSIBLE GEARBOX MECHANISM WITH BRAKE DRUMS

Gears 8 and 9 are keyed to driving shaft 1. Carriers 14 and 15 are keyed to driven shaft 2. Planetary gears 10 and 11 are of equal diameter and rotate freely on the symmetrically located studs of carrier 14. Planetary gears 12 and 13 are of equal diameter and rotate freely on the symmetrically located studs of carrier 15. Internal gear 16 is rigidly attached to brake drum 6 and meshes with planeta…