Abstract: A collapsible baby carriage having front leg bars rotatably supporting front wheels at their lower ends, rear leg bars rotatably supporting rear wheels at their lower ends, a transverse connector bar connecting the front and rear leg bars at their upper ends, embracing members secured at one end to the lower end of a handle bar for detachably embracing the rear leg bars when the carriage is unfolded, anchoring link bars connected at their respective ends to a central portion of each front leg bar and to a lower portion of each auxiliary bar, a spring-loaded lock bar for resiliently engaging and disengaging with anchoring edges on the anchoring link bars, an lock bar receiving member pivoted to at least one of said anchoring link bars and a manipulation mechanism for disengaging the lock bar from the anchoring edges of the anchoring link bars.

Abstract: A baby carriage which essentially comprises a pair of wheeled front legs, a pair of wheeled rear legs, sliders having said front legs pivoted thereto and slidable along said rear legs, transverse rods pivoted at one end to said rear legs, rear bars having the other ends of said transverse rods pivoted thereto, rocker bars pivoted at the opposite ends to said rear legs and rear bars, rear rods pivoted at one end to said rocker bars, L-shaped levers pivoted to said rear legs between the mounting points of said rocker bars and rear wheels, pull bars pivoted to said levers and sliders, connector bars pivoted to said front legs and said rear legs between the mounting points of said rocker bars and rear wheels, intersecting pipes pivoted to said sliders and rear legs and each other in intermediate portions of said pipes, and a pusher bar.