The two way to one way mechanism converts two-way rotation to one way rotation. The mechanism consists of three bevel gears. Two of the bevel gears are input gears, and the third is the output gear which only rotates clockwise. The bevel gears aren't fixed to the axle and are free to rotate. Ratchets are attached on the opposite sides of the axle, around the bevel gears. The ratches are fixed onto the axle, in opposite direction on either side. Two pawls are attached on the bevel gears at the height of the ratchet teeth. These pawls are also fixed on the gear in opposite sides on either side. When the axle is rotated clockwise the ratchet and pawl interlock with each other and drive the input gear on that side clockwise. On the other side, the pawl does not lock into the ratchet as it is mirrored. So, the bevel gear on that side moves only with the rotation of the other two gears. This whole inter mechanism causes the output gear to rotate clockwise.