Driving shaft 1 rotates in either direction about fixed axis and is rigidly attached to cone 2 which engages internal cone 3 at the high speed of driven shaft 7 and external cone 4 at the low speed. Shaft 7 rotates about fixed axis B. As shown, rotation is transmitted through cone 4, held against cone 2 by spring 11, and gears 5 and 6, keyed to shafts 10 and 7. If lever 9 is turned counterclockwise, collar 8 shifts gear 5 and shaft 10 with cone 4 to the left, disengaging cones 4 and 2, and engaging cones 3 and 2. Then rotation is transmitted through gears 12 and 13, keyed to the sleeve of cone 3 and to shaft 7.
$3422$CF,ML$