Combination hinge and detent

Claim 1

IN A HINGE AND DETENT STRUCTURE FOR A DOOR AND AN ADJACENT JAMB IN A CABINET, A FIRST PLATE MEMBER ADAPTED FOR ATTACHMENT TO SAID DOOR, A SECOND PLATE MEMBER ADAPTED FOR ATTACHMENT TO SAID JAMB, HINGE MEANS CONNECTING ADJACENT ENDS OF SAID FIRST AND SECOND MEMBERS TOGETHER FOR SWINGING MOVEMEN RELATIVE TO EACH OTHER, A FREELY ROTATABLE ROLLER MOUNTED ON ONE OF SAID MEMBERS, AND A RESILIENT KEEPER MOUNTED ON THE OTHER OF SAID MEMBERS IN THE PATH OF RELATIVE MOVEMENT OF SAID ROLLER WITH RESPECT TO SAID KEEPER UPON EXECUTION OF SWINGING MOVEMENT OF ONE MEMBER RELATIVE TO THE OTHER, SAID ROLLER ENGAGING SAID KEEPER WHEN SAID FIRST AND SECOND MEMBER ARE AT THE LIMIT OF THEIR SWINGING MOVEMENT IN ONE DIRECTION RELATIVE TO EACH OTHER, A CURVED RECESS FORMING PORTION APPENDED ON THE RESILIENT KEEPER, A RESILIENT BAR ELEMENT EXTENDING FROM A SLOT ON THE OTHER OF SAID MEMBERS, SAID BAR ELEMENT EXTENDING FROM SAID SLOT AND HAVING A FORMED RECESS AT ITS END, A LEAF SPRING INTERPOSED BETWEEN SAID CURVED RECESS FORMING PORTION AND SAID FORMED RECESS FOR BIASING THE BAR ELEMENT TO A POSITION FOR ENGAGING SAID ROTATABLE ROLLER.