Fig. 112 shows both a single loose tongue and a double solid tongue. Both are methods used to connect circular cornered work, such as a counter end, to the front framing.

Fig. 112. - Single Loose Tongue and Double-tongue Joint.

Fig. 113 indicates a tongued and grooved joint suitable for edge or end jointing, such as fitting matchboarding round a chimney breast, making small jewel drawers, etc.

Fig. 114 is a tongued and grooved joint with a bead worked on same to hide the joint, sometimes called a staff-bead. It would be used in positions such asboarding around an upright iron pillar, etc., the bead giving a neat finish at each corner.

Fig. 115 is a similar joint, but at an obtuse angle. An example of its use is in fixing boarding around an octagonal column of brickwork.

Fig. 113 .

Fig. 114 .

Fig. 115 .

Examples of Tongued and Grooved Corner Joints.

Fig. 116 shows a tongued and grooved mitre as used for strengthening the corners of cabinet work, such as tea caddies, small boxes, plinths, etc. Two pieces of wood are glued in position and allowed to set prior to glueing and cramping the joint proper. These pieces are afterwards planed away, thus leaving a clear surface to the box sides.

Fig. 117 shows the method of working the groove in the above joints. The pieces are turned back to back, the mitres thus making a right angle. The guide on the grooving plane thus works against each face of the joint, and this ensures correct jointing.

Fig. 118 is somewhat similar to Fig. 113 , but with a quarter circle mould to hide the joint.

Fig. 119 indicates the building up of a double skirting mould. C represents the brickwork, A the oak-framed panelling, and B the packing and fixing block. A wide skirting of this type is made in two portions for convenience in working the moulding and to prevent undue shrinkage.

Fig. 117. - Working a Groove.

Fig. 118. - Corner Joint with Corner Mould.

Fig. 119. - Double Skirting Mould.

Fig. 120. - Joint for Corner Bracket or Cupboard.

Fig. 120 illustrates the use of a tongued and grooved joint for fixing together the sides of a corner bracket, and the same method holds good when jointing a corner cupboard. A capping mould or top shelf will conceal the joint; it then has the appearance of a glued butt joint, but is of course considerably stronger. No screws or nails are required if this joint be used.