Tractor transmission to permit smooth change of speed operation effectuated by rotational resistance

A transmission having a propelling line and a power takeoff line, comprising;

• an engine output shaft,
• a double clutch connected to said engine output shaft and including a first and a second flywheels for transmitting engine output to said propelling line and/or said power takeoff line,
• a transmission gear means including a propelling line change speed mechanism having a reversing gear and a reversing shaft for supporting said reversing gear, and a power takeoff change speed mechanism, said reversing gear operatively connected to said propelling line,
• connecting shaft means for connecting said double clutch to said transmission gear means, said connecting shaft means including a tubular outer shaft connectable to said second flywheel and an inner shaft mounted in said outer shaft and connectable to said first flywheel, and
• rotational resistance applying means provided on said reversing shaft for applying a rotational resistance to said reversing gear by friction,
• wherein said outer shaft has a forward end thereof relatively rotatably supported in a boss portion defined on said second flywheel.