PTO-Driving of double-clutch-incorporated type transmission

PTO-drive for double-clutch type transmission comprising a double clutch apparatus including:

• a running-travel clutch and a PTO clutch having a PTO transmission shaft, said running-travel and PTO clutches disposed in operative juxtaposition relative to one another;
• a running-travel main shaft drivable from th running-travel clutch;
• a PTO main shaft drivable from the PTO clutch, said running-travel shaft being concentrically disposed within said PTO main shaft;
• travel-transmission shaft means for transmitting engine power from said running-travel main shaft;
• main speed-change means operatively associated with said running-travel main shaft for operatively interconnecting said running-travel main shaft and said travel-transmission shaft means to change running travel speeds, wherein
• said running-travel main shaft, said main speed-change means and said travel-transmission shaft means together establish a travel drive line;
• first and second gear means for being respectively driven by the PTO main shaft and the running-travel main shaft;
• and
• coupling means movable between a first position for selectively coupling said PTO transmission shaft to said PTO main shaft through said first gear means, and a second position for selectively coupling said PTO transmission shaft to said running-travel main shaft through said second gear means, wherein said running-travel main shaft, said second gear means and said PTO transmission shaft together define a PTO drive line when said coupling means is moved to said second position such that
• operation of said main speed change means to effect speed change through said travel drive line does not affect PTO drive speed through said PTO drive line.