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FOUR-SPEED GEARBOX MECHANISM WITH CLUTCHES ON THE INPUT AND OUTPUT SHAFTS

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Clutches 3 and 4 slide along square guides a and b of input and output shafts 1 and 2. Gears 9, 10, 11 and 12 are keyed to intermediate shaft 13 and are in constant engagement with gears 5, 7, 6 and 8 which rotate freely on shafts 1 and 2. When driving shaft 1 rotates, driven shaft 2 can have any one of four speeds for which clutches 3 and 4 are engaged at the same time to gears 5 and 7, or gears 5 and 8, or gears 6 and 7, or gears 6 and 8. The corresponding transmission ratios are i₁₂=(z₉/z₅)(z₇/z₁₀), i₁₂=(z₉/z₅)(z₈/z₁₂), i₁₂=(z₁₁/z₆)(z₇/z₁₀) and i₁₂=(z₁₁/z₆)(z₈/z₁₂) where z₅, z₆, z₇, z₈, z₉, z₁₀, z₁₁ and z₁₂ are the numbers of teeth of gears 5, 6, 7, 8, 9, 10, 11 and 12.
$2851$CxG,SR$

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Documents: Gear mechanisms  [Streambook]
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