Fig. 10.25

Left: Kinematic diagram of the toggle mechanism. Right: Illustration of the launch mechanism with two frames from an animation (https://youtu.be/valHdaWrOCA). In the first frame, the cam is moving the toggle, causing the torsion bar to rotate. In the right frame, the cam is no longer in contact with the toggle. This allows the bar to immediately release its elastic energy and the projectile is launched