Patent ID: 8459906

Claim:
A drilling system for quickly and accurately creating hole patterns in the faces of panel type workpieces and for creating mirror images of those hole patterns in additional workpieces, said drilling system comprising: a work holding fixture having a workpiece supporting surface; said work holding fixture also having a workpiece alignment fence disposed left to right and forming a boundary to the work supporting surface; said work holding fixture also having adjustable left and right workpiece positioning stops; said work holding fixture also having an integral resilient clamping device to secure 1 left and 1 right workpiece simultaneously; said work holding fixture having a raised end stop disposed perpendicular to the workpiece alignment fence to aid in registering one end of a guide rail to the work holding fixture; said work holding fixture also having an arrangement of holes which accept locating pins to releasably hold said guide rail parallel to the alignment fence in various numbered positions at specific distances from the alignment fence while keeping said guide rail centered between the left and right workpiece positioning stops; said work holding fixture constructed so that the component containing the holes which accept the locating pin, at the end of the guide rail opposite the said raised end stop, is movable slightly left or right to accommodate slight changes in length of guide rail versus length of work holding fixture due to changes in temperature and humidity; said guide rail having a linear guiding face; said guide rail having left and right registration pins for positioning with respect to the work holding fixture; said guide rail having also a surface into which has been cut a series of notches or detents with a certain spacing; said guide rail having a dual numbering system corresponding to drillable hole positions gauged from the left and the right workpiece positioning stops of the work holding fixture; said guide rail also having handles for lifting and reregistering into various numbered positions on the work holding fixture; a router guide assembly having a guide face which, when slidably pressed against the linear guiding face of a guide rail that is registered to a work holding fixture, will restrict movements of an attached drilling or center marking machine to either the left or the right only; said router guide assembly having a hole number pointer indicating numbered hole positions as marked on the guide rail; said router guide assembly having opposed left and right ratchet pawls which when set one up one down will allow sustained movement in one direction only and which, when direction of that movement is reversed, will engage a detent in said guide rail thus fixing a hole position.