Woodwork Joints / How they are Set Out, How Made and Where Used. by William Fairham

Author:William Fairham [Fairham, William]
Language: eng
Format: epub
Tags: Woodwork, Carpentry
Published: 2007-05-19T04:00:00+00:00

Fly Rail.—Fig. 243 is a sketch of a small table with the top removed. A revolving fly rail is shown pivoted upon a piece of 1⁄4-in. wire. The object of this fly rail is to form a support to the small hinged drop-leaf of the table. This method is suitable for small occasional tables and similar articles.

Draught Screens.—Fig. 244 illustrates the end elevation and plan of a draught screen which is constructed of a light framework and covered with baize or American cloth. The reversible double-folding hinge (Fig. 230) would answer admirably for such a screen. Cases occur, however, where it is desired to hinge a screen to be used for an invalid's bedside, and it is then important that all draught should be excluded through the jointed edges. The double reversible hinge will not fulfil these conditions, and the following method is therefore adopted.

In the plan, Fig. 244, A and B, two laths of hardwood (beech, birch or mahogany answer splendidly) are shown. They are made the same length and the same width as the edges of the screen, the corners being slightly rounded away.

A double-folding, draught-proof hinge is then made as follows: Procure good fine webbing, about 11⁄4 in. wide, and the necessary large-headed tacks. Lay the laths side by side as shown in Fig. 244, and proceed to web them as shown. Commence with the web under the lath A; bring it between the laths and over B; now take it round the left-hand edge of B, and round the back and between the laths and over A, continuing this method of wrapping the laths until the lower end is reached, and then fastening the webbing as indicated by the dotted lines which represent the tacks. This self-contained hinge is then fixed to the edges of the screen by boring suitable holes through the laths and using countersunk screws. This is a cheap and efficient method of overcoming the difficulty. A similar method is used for the household clothes horse.

Fig. 245.—Finger Joint Hinge. Fig. 245.—Finger Joint Hinge.

Fig. 246.—The Knuckle Joint Hinge. Fig. 246.—The Knuckle Joint Hinge.

Finger Joint Hinge.—Fig. 245 is a finger joint—a movable interlocking joint used to support the leaf of a Pembroke table. The small portion is screwed to the table rail and the shaped bracket swings out to support the drop leaf. The shaded portion of the bracket shows the timber chamfered away so that the fingers may be easily put behind the bracket to manipulate it. Note that the corners are slightly rounded off, as indicated by the black portion of the sketch, and that the mortises are cut about 1⁄4 in. deeper than the thickness of the timber used. This joint has now been almost superseded by a cheap stamped galvanised iron bracket of exactly the same pattern. The joint, however, is still used for repair work and in cases where a stamped metal bracket has not sufficient overhang.

Fig. 247.—Open Joint Hingeing. Fig. 247.—Open Joint Hingeing.

Knuckle Joint Hinge.—Fig. 246 is a similar type of joint to the above, and is called the knuckle joint.

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