Door security guard

A door security latch comprising an attachment member for attachment of the latch to a door frame adjacent a door opening having a projecting portion adapted to project beyond the door frame, a door frame having an inside and an outside, the projection lying on the inside of the door frame, a link member having a free end and an attachment end, the attachment end pivotably attached to the projecting portion with the link pivotable in a plane substantially normal to the plane of projection of the projecting portion, the free end having a threaded connection to a threaded member, the threaded member having a longitudinal axis substantially normal to the plane of pivotability of the link, the threaded member having one end thereof terminating in a door abutment face and a second end thereof, lying on a side of the link opposite the door abutment face, terminating in an actuating handle, rotation of the actuating handle causing the abutment face to withdraw towards the link and to advance away from the link, the link having a length sufficient to place the abutment face in opposition to an inside surface of a door closing said door opening, the attachment member extending through the door frame to adjacent an exterior wall surface of a wall in which the door frame is mounted, means engaging an end of the attachment member adjacent the exterior wall preventing withdrawal of the attachment member through to the wall to the interior of the door frame, said means being selectively disengageable to allow the attachment member to be released from said means whereby the attachment member can be freely pushed through the door frame to allow the door to be opened, cover means on the outside wall surface preventing access to the means, and one of the cover means and means engaging being structured requiring use of tools for a disengagement of the means engaging from the attachment member.