Fig. 2767.
If the stuff is broad two or more tenons and mortices may be given, as shown in [Fig. 2767].
Fig. 2768.
To lock the tenon in the mortice two methods may be employed. In the first and preferable one the mortice is tapered, as in [Fig. 2768], and the two wedges are inserted and driven home. In the second the tenon is provided with saw cuts to receive the wedges.