Security clutch with unitary trigger and spring

A security clutch for a jewelry post with a circumferential groove, comprising:

• a cylindrical housing including a top plate and a bottom plate and a wall extending therebetween;
• said housing defining a post receiving aperture extending through said top plate and said bottom plate;
• said wall defining an access port therethrough;
• a trigger lock member disposed in said cylindrical housing and between said top plate and said bottom plate;
• said trigger lock member including a main body with an aperture therethrough defining a post locking notch centrally located therein;
• said main body having a first end and an opposing second end and a left side and a right side;
• a biasing member connected to said first end of said main body;
• said biasing member having a left spring member in communication with the cylindrical housing and a right spring member in communication with the cylindrical housing and spring-biasing said main body toward said post receiving aperture;
• a trigger portion connected to said second end and extending through said access port in said wall and capable of manipulation from outside of said housing;
• a left shoulder stop emanating from the left side of the main body and a right shoulder stop emanating from the right side of the main body;
• the left shoulder stop and right shoulder stop being capable of communicating with the housing;
• and
• said main body being movable, by depression of said trigger portion against the biasing force of said biasing member, from a resting locked position with said post locking notch partially blocking said post receiving aperture and residing within said circumferential groove of said jewelry post thereby securing said jewelry post relative to said housing, with the left shoulder and the right should in communication with the housing, to an unlocked position with said post locking notch being clear of said post receiving aperture and the left shoulder and the right shoulder not in communication with the housing, thereby permitting free passage of said jewelry post within said post receiving aperture.