Bubble blowing device

Claim 1

A bubble blowing device comprising a housing having a wall defining an open and an opposite closed end of said housing, at least a portion of said wall being deformable, said housing being adapted to contain a bubble-forming liquid; a cylinder having an open end fluid-tightly joined to said open end of said housing and extending from said open end into said housing spaced at least from said deformable wall portion; a passage providing communication between the interior of said housing and that of said cylinder and being arranged in the region opposite the open end of said cylinder so that liquid contained in said housing may pass into said cylinder; a piston reciprocably arranged in said cylinder between a retracted and an extended position, said piston having one end facing said open end of said cylinder; an annular liquid-withdrawing member fixed to said one end of said piston and movable with the latter between said retracted position in which said annular member dips into the liquid and said extended position in which said member projects beyond the open ends of the cylinder and the housing and the withdrawn liquid forms a film extending across said annular member so that the film can be formed into a bubble, whereby upon compression of said deformable wall portion of said housing liquid in the latter will be forced to pass into the cylinder to thereby move said piston from said retracted to said extended position.