are inside it thus the suction capacity of the baby bottle 61 can be quite limited when its elastic walls are repeatedly pressed and released which will assure that after this operation there will always be in the baby bottle a very small amount of water in this way the elastic bellows 51 expands when it fills with air with a small amount of water remaining at the bottom of it and in the pneumatic tubes 44 the system does not lose pressure due to the existence of a non return valve 68 located on the pneumatic tube 44 near to the doll 39 s mouth 43 and also because the outlet valve 45 remains closed consequently the bellows cover rod 56 moves upwards making the sector 23 turn and it applies the pneumatic clutch receptor crown 22 against the pneumatic clutch drive gear 21 fitting both together this allows the pneumatic clutch output gear 28 to turn when the moveable toothed crown 12 fits with the pneumatic clutch drive crown 20 in its alternating movement on the alternating shaft 11 itself transmitting a turning movement to the arm coupling 32 through the arm receptor crown 30 the arm shaft 31 and the friction.