Page:Cassells' Carpentry and Joinery.djvu/26

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used for driving into the ends of boards which have been jointed and glued, to pull together the joint, and for similar purposes by the joiner. They are also used for drawing together face joints when glued, but only in cases where the holes made by the dogs are to be covered afterwards by another piece of lining. A stronger form is also sometimes used by the carpenter for common flooring. The dog is driven into the joist firmly, there being enough space between the dog and the edge of the floor-board to admit a pair of folding wedges,