Push button type safety seat belt buckle

Claim 1

IN A SAFETY BELT BUCKLE CONSTRUCTION, A COMBINATION OF A CASING INCLUDING A BASE WALL, UPSTANDING RELATIVELY SPACED SIDE WALLS AND A COVER DEFINING A CHAMBER THEREIN AND A TOP OPENING TO SAID CHAMBER, MEANS CONNECTED TO THE CASING FOR ADJUSTABLY CLAMPING BELT WEBBING THERETO, A LATCHING DOG COMPRISING A PLATE PIVOTALLY MOUNTED UPON SAID CASING SIDE WALLS WITHIN THE CHAMBER, SPRING BIASING MEANS NORMALLY ENGAGING AND URGING THE LATCHING DOG AND ITS PLATE DOWNWARDLY TOWARDS THE BASE WALL INTO LATCHING POSITION, LIFTING MEANS PIVOTALLY MOUNTED UPON SAID CASING AND LOCATED WITHIN THE CHAMBER CASING HAVING A CRANK PORTION, A WEBBING ATTACHING TONGUE PLATE HAVING AN OPENING THEREIN, SAID LATCHING DOG PLATE HAVING A DEPENDING REAR EXTENSION IN CLOSE PROXIMITY TO THE BASE WALL ADAPTED TO ENTER THE TONGUE PLATE OPENING UNDER INFLUENCE OF THE SPRING BIASING MEANS UPON FILL INSERTION OF THE TONGUE PLATE BETWEEN THE BASE WALL AND THE PLATE OF THE LATCHING DOG AND TO RETAIN THE TONGUE PLATE WITHIN THE CASING, SAID LATCHING DOG AT ITS REAR END BEYOND THE PIVOT AXIS OF THE DOG ENGAGING THE LIFTING MEANS CRANK PORTION WHEREBY THE LATTER IS NORMALLY URGED BY THE SPRING BIASING MEANS INTO AN INOPERATIVE POSITION, AND MOVABLE PUSH BUTTON MEANS MOUNTED AT THE OPENING OF THE COVER OF THE CASING AND OPERATIVELY ASSOCIATED WITH SAID LIFTING MEANS AND ADAPTED WHEN DEPRESSED INTO THE CASING TO PIVOTALLY MOVE THE LIFTING MEANS CRANK PORTION TO SLIDABLY ENGAGE THE DOG AND LIFT IT OUT OF LATCHING POSITION WITH RESPECT TO THE TONGUE PLATE.