Yes and no.
The normal servo motor has an 'arm'. Most can do 180 degrees, some 360, some continuous rotate.
If you replace the 'arm' with a disc for a rope, you have a winch servo.
The winch servo is sometimes used with the 360 degrees, or with a continuous rotating servo.
The main use seems to be for RC sail boats.
If you want an accurate 90 degrees servo with a lot of torque, please forget those winch servos and use a good quality normal servo.
Someone asked a about good servo motor a week or two ago. I wrote then that these brushless double bearing servos look very promising: http://www.futaba-rc.com/servos/brushless.html