Portable door locking device

A portable door locking device for preventing a door without a lock from being opened comprising, in combination:

• an attachment plate comprised of a generally planar member configured into a plurality of extents, the attachment plate having a first extent, the first extent having a central aperture therethrough, a second extent extends generally orthogonally from an end of the first extent, a third extent extends generally orthogonally from the second extent, a fourth extent extends orthogonally from the third extent whereby the fourth extent and the second extent are in a parallel relationship, the attachment plate dimensioned for removable coupling with an existing striker plate on an existing door jamb whereby the first extent may extend in an orthogonal relationship with respect to the door jamb;
• a locking bar comprised of a generally elongated and cylindrical member, the locking bar having a diameter essentially equal to a diameter of the central aperture of the first extent of the attachment plate, the locking bar having a central extent, an obtuse end portion extends from one end of the central extent at an angle greater than 135 degrees, the locking bar having an orthogonal end portion extending from an opposed end of the central extent at an angle of about ninety degrees, the orthogonal end portion having a plurality of protrusions disposed circumferentially thereon, the locking bar threadable through the central aperture of the first extent of the attachment plate from the obtuse end portion to a part of the orthogonal end portion to preclude inward opening of an existing door wherein the plurality of protrusions preclude threading a remaining part of the orthogonal end portion through the central aperture thus disengagement of the locking bar from the attachment plate.