Doweling jig
OwnerGarfield Wigginsinventor
Life of this patent
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Abstract
A doweling jig requiring minimal adjustment for drilling multiple like-size mating dowel pin holes in workpieces of varying thicknesses, dependent on the configuration of fixed position drill guides or bushings. The jig is generally of channel construction, with reversible clamping for use on double jigs of one or two channels. Each side of a double jig may differ in configuration and size of its fixed position drill guides. Of the many construction methods, two use interchangeable heads containing one or more drill guide configurations. The use of pivotal stop disks at each end of the channel lessens visual alignment.
Claims10
In a dowel jig for use in drilling matching holes in two separate pieces of stock, the combination of a horizontally elongated channel having a flat top and two parallel side members, said top member having an undersurface parallel with its upper surface and having a longitudinally spaced series of vertical guide bushings through which a drill bit can pass for making spaced holes in the piece of stock held in contact with said undersurface, one of said side members having attached means for clamping the piece of stock longitudinally against the other side member and said undersurface in a position for drilling operation thereon, an eccentric stop disk at each end of said channel to form a trihedral angle and constituting a stop against which the end or the edge of the stock is positioned thereto, each of said stops being pivotal to move out of such stop position.
Dependencies are inferred from the claim text.