Button of 2 functions

The blue button controls the motion of the block of yellow ratchet wheel and pulley. The button is attached to the blue rack of circular teeth. The pink rack is connected to the blue rack via two violet identical connecting rods, thus a parallelogram mechanism is created. The orange flat spring forces the pink rack toward the yellow ratchet wheel. Turn the button 180 deg. to set two working modes of the button. Mode 1: the blue rack is in merge with the ratchet wheel. The linear reciprocating motion of th