Gears 12 and 13 are keyed to shaft 1. Gears 3 and 4 form acluster that slides along square guide a of intermediate shaft 21 so that gear 3 or 4 can be engaged to gear 12 or 13. Gears 5, 6 and 7 form a cluster that slides along square guide b of intermediate shaft 22 so that gear 5, 6 or 7 can be shifted into engagement with gear 14, 15 or 16 which are keyed to shaft 21. Gears 8 and 9, and gears 10 and 11 form two clusters that slide along square guides c and d of intermediate shaft 23 so that they can be shifted into engagement with gear 17 or 18, keyed to shaft 22, and gear 19 or 20, keyed to shaft 24. Gear 25 is keyed to shaft 24 and is in constant engagement with gear 26 which is keyed to shaft 2. When driving shaft 1 rotates, driven shaft 2 can have any one of twenty-four different speeds, depending on which of the gears in the sliding clusters are in engagement with the gears keyed to the shafts 1, 21, 22, 23 and 24.
$2869$CxG,SR$