Describe the bottom, the length and breadth required as in fig. 20; the body as in figs. 21 and 22; describe the right angle ABC, fig. 21: make BG the altitude, draw the line DG at right angle to BC: make DG equal to AF in fig 20; make AB equal to DG and the taper required on a side, draw a line cutting the points A and D, and the line BC; make FG equal to GD in fig. 20; make EB equal to FG and the taper required on a side draw a line cutting the points E and F and the line B C.

Fig. 22, make AC and BD equal to DA in fig. 21; make CD and AB equal to BC in fig. 20; draw the lines CK and DL. Fig. 21; with the radii CD, and in fig. 22; A as a centre, cut the line CK as at K with K as a centre; describe the arc AI, also, the arc C J; set off AI equal to AB, in fig. 20, draw the line JI, cutting the centre at K.

Fig. 21, with the radii HF, and in fig. 22, B as a centre cut the line DL, as at L, with L as a centre; describe the arc BF, also the arc DE; set off BF equal to CD, in fig. 20; draw the line EF, cutting the centre at L; draw the lines FG and EH at right angle to EL; make FG, equal to DE, in fig. 20; draw the line HG at right angle to EH.

Edges to be allowed.

Fig. 22. The taper to be equal on all sides.

Fig. 20.

Fig. 21.

Oval. To Describe A Pattern For A Tapering Oval Or Ob-Long Article, The Sides To Be Straight, With Semicircle Ends, To Be In Two Sections

Describe the bottom, the length and breadth required as in fig. 23; the body as in figs. 24 and 25.

Describe the right angle ABC, fig. 24: make BE the altitude, draw the line DE at right angle to BC: make DG equal to AB in fig 23; make AB equal to DE and the taper required on a side, draw a line cutting the points A and D, and the line BC, fig. 25; make AC and BD equal to AD in fig. 24.

Make AB and CD equal to DC in fig. 23; draw the lines CI and DJ, fig. 24; with the radii CD, and in fig. 25; A and B as centres, cut the lines CI and DJ as at I and J, with I and J as centres; describe the arcs AH and BF; also, the arcs CG and DE; set off AH and BF equal to CB, in fig. 23, draw the lines GH and EF, cutting the centre at I and J.

Edges to be allowed.

The taper to be equal on all sides.

In a large article it may be more convenient to lay out the End-pieces to fit the Semi-circles, and join them to the sides, as at D and C, in fig. 23.

Fig. 25.

Fig. 24.

Fig. 23.