Auxiliary equipment transmission

In a transamission including a drive train having speed change bearing and a one-way clutch between a transmission input and a transmission output, the improvement comprising

• a first cylindrical surface fixed to rotate with the transmission input;
• a second cylindrical surface fixed to rotate with the transmission output, said cylindrical surfaces being axially adjacent and coterminous;
• a wrap spring about said cylindrical surfaces having a first end attached to the transmission output and a second end;
• a pivotal actuator mechanism attached to said second end to pivot and bias said second end relative to said first end at a selected speed range of the transmission;
• and,
• and pivotal actuator mechanism including spring loaded centrifugal weights, an input plate and a pin and groove mechanism coupling said centrifugal weights and said input plate, said input plate being attached to said second end of said wrap spring and said centrifugal weights being fixed to rotate with the transmission output.

A transmission comprising in combination

• a transmission input;
• a transmission output;
• a drive train including planetary gearing and a one-way clutch coupled between said transmission input and said transmission output;
• with
• a first cylindrical surface fixed to rotate said transmission input;
• a second cylindrical surface fixed to rotate with said transmission output, said cylindrical surfaces being axially adjacent and coterminous;
• a wrap spring about said cylindrical surfaces having a first end attached to said transmission output and a second end;
• a pivotal actuator mechanism attached to said second end to pivot and bias said second end relative to said first end at a selected speed range of said transmission;
• and,
• wherein said planetary gearing includes a ring gear, said first cylindrical surface being about the periphery of said ring gear, said ring gear being fixed to said transmission input.

A transmission comprising in combination

• a transmission input;
• a transmission output;
• a drive train including planetary gearing and a one-way clutch coupled between said transmission input and said transmission output;
• a first cylindrical surface fixed to rotate with said transmission input;
• a second cylindrical surface fixed to rotate with said transmission output, said cylindrical surfaces being axially adjacent and coterminous;
• a wrap spring about said cylindrical surfaces having a first end attached to said transmission output and a second end;
• and
• a pivotal actuator mechanism including an engagement mechanism having spring loaded centrifugal weights and a friction drum to which said centrifugal weights engage, said engagement mechansim being coupled between said transmission input and said second end of said wrap spring.

A transmission comprising in combination

• a transmission input;
• a transmission output;
• a drive train including planetary gearing and a one-way clutch coupled between said transmission input and said transmission output;
• a first cylindrical surface fixed to rotate with said transmission input;
• a second cylindrical surface fixed to rotate with said transmission output, said cylindrical surfaces being axially adjacent and coterminous;
• a wrap spring about said cylindrical surfaces having a first end attached to said transmission output and a second end;
• and
• a pivotal actuator mechanism including spring loaded centrifugal weights, an input plate and a pin and groove mechanism coupling said centrifugal weights and said input plate, said input plate being attached to said second end of said wrap spring and said centrifugal weights being fixed to rotate with the transmission output.