[Madison]

As per the bullet points above the animation, the mechanism "delivers constant torque throughout the speed range." It doesn't increase torque as speed decreases because the output shaft's angular velocity is equal to the input when it is turning -- assuming they're of equal diameter. It's output is intermittent. Glancing at the animation suggests that arrangement rotates the output about 30* per control arm cam per input revolution. Four control arm cams, then, rotate the output 120* per input revolution; a reduction of 1:3. Adding more control arm cams or changing the geometry of the existing cams can vary this ratio. For the 2/3 of each input revolution that the output is not moving, the energy is being lost to friction (heat) within the one-way bearings.

Presumably, the attached lever has some role in adjusting the control arm cam geometry and varying the output speed as a result, but how it does so isn't clear from the animation.