Security lock and deadbolt locator

A locator for use with a door hole boring jig for locating the position for drilling holes for security locks or deadbolts, or both, in doors a specified distance from a previously drilled doorknob hole in such doors, the locator comprising, in combination:

• a plate constructed and configured to define a pair of opposed first and second parallel edges, an outer surface, and a generally planar inner surface;
• and
• split hub means defined by a hub center and comprising a plurality of radially spaced resiliently radially outwardly biased projections extending from points on the inner surface of the plate to points radially spaced and equidistant from the hub center;
• the plate being so constructed and configured as to position the first edge a distance Dsl from the hub center to position, when in use, a door hole boring jig such that the door lock center LKc as defined by the door hole boring jig is a first predetermined distance from the doorknob center DKc as located by the split hub means on the locator, and to position the second edge a distance Ddb from the hub center to position, when in use, a door hole boring jig such that the deadbolt lock center DBc as defined by the door hole boring jig is a second predetermined distance from the the doorknob center DKc as located by the split hub means on the locator;
• the split hub being so constructed and configured as, when in use with the hub inserted in a previously bored doorknob hole DKh, to position the hub center Hc at the center DKc of said doorknob hole DKh, the radially spaced projections thereof resiliently engaging the doorknob hole thereby positioning the hub center.