. Hardware merchandising August-October 1912. E X ^ rA p l_ e if JL L. &t * _*?-- * t - vf y Fi<}.4 3 h r pRoeLem 3/ jl~s--. 38 HARDWARE AND METAL the radius for drawing the pattern fora cone having the same slant and curveas the sides of the ellipse. Let us now develop the pattern for thelarge side of the ellipse prob. 31. Setthe point of the compass at W and thelead at X, and with any convenientpoint as centre as P, describe an arc. Lay off on this arc the stretchout ofone side of Fig. 1 as from 1 to 7. Drawlines from 1 and 7 into the point gives us the bottom line of ourpattern. N
. Hardware merchandising August-October 1912. E X ^ rA p l_ e if JL L. &t * _*?-- * t - vf y Fi<}.4 3 h r pRoeLem 3/ jl~s--. 38 HARDWARE AND METAL the radius for drawing the pattern fora cone having the same slant and curveas the sides of the ellipse. Let us now develop the pattern for thelarge side of the ellipse prob. 31. Setthe point of the compass at W and thelead at X, and with any convenientpoint as centre as P, describe an arc. Lay off on this arc the stretchout ofone side of Fig. 1 as from 1 to 7. Drawlines from 1 and 7 into the point gives us the bottom line of ourpattern. Now set off the distance A-S of on the line 1-P, as 1-Z. Then with Pas centre and the lead at Z swing thearc Z-L. This completes the side ofthe pattern; the opposite side would bethe same. We now want to get the radius for thesmall ends. We therefore transfer the space K-0of Fig. 1 to the line X-Y of Fig. 3, asshown by the space X-G. Then projecta vertical line up until it meets the slantline, as shown by G-M. Then M-X is the radius for drawingthe pattern
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Keywords: ., bookcentury1900, booksubjectbu, booksubjectimplementsutensilsetc
