DRILL ADAPTOR FOR BORING DOUBLE HOLES DESTINED TO RECEIVE WOODEN INSERTS

摘要

The invention relates to a non-autonomous mechanism (adaptor), which is adaptable to whatever electric hand drill for the synchronical boring of two holes on the same line at determined positions aswell as for the successive boring of holes having equally-distanced centres liable to receive wooden inserts. The adaptor in question is composed of: the base 1 having two channels wherein the guide 4 is moving and whereon cylindrical rods 2 are fixed to assist the sliding of the container 7 which bears the shafts 8 whereon there are placed the drilling implements 6 and the gears 12 rotating these shafts; the gear 9 is adapted to the electric hand drill and it rotates the gears 12; the guide 4 is moving towards the drilling implements in parallel disposition and under angle for determining the distance of the holes from the end of the wood; the fork 10 is fixing the electric hand drill on the container 7.