Boring and routing jig for cylindrical door knob assemblies and the like

A boring and routing jig for guiding tool bits to locations upon a door, the jig comprising:

• an elongated, channel shaped frame member for receiving an edge of a door, the frame member including a base portion defining an aperture therein and first and second parallel, spaced apart, depending side portions, where each of said portions is provided with an elongated aperture therein,
• a first elongated side template means, adjacent to a first side portion, removable and adjustable with the frame member in place and having a plurality of holes defined therein for guiding a boring tool bit;
• a second elongated side template means, adjacent to a second side portion, removable and adjustable with the frame member in place and having a plurality of holes defined therein for guiding a boring tool bit;
• pairs of template guides associated with said first and second side portions, each template guide having a first lip means formed along the length of a side portion, and a second lip means formed along the length of the same side portion, said second lip means being substantially parallel to and facing said first lip means and separated from said first lip means by substantially the width of a corresponding template means, whereby said corresponding template means may be slideably disposed between said first and second lip means,
• a movable edge boring guide means defining a drill guiding aperture mounted for motion adjacent to the base portion of the frame member for drill communication through the aperture in the base portion at a desired location, and
• means for clamping side portions of said frame member to said door,
• whereby when said frame member is clamped to a door, the holes of said first side template means may guide a boring tool bit to a first location on a first side of the door, the holes of said second template means may guide a boring tool bit to a second location on a second side of the door, and said edge boring guide means guides a drill bit to a third location along an edge of the door, where said first, second and third locations are aligned in a predetermined relationship.