This section is from the book "Manual Of Cardboard Construction For Third And Fourth Grades", by Charles A. Kunou. Also available from Amazon: Manual of cardboard construction for third and fourth grades.
With ruler draw line, AB, 9" long.
With triangle draw line CD, 4" long and at right angles to and • 3" from end of line AB. Connect C and D with B. With compasses draw arc through C and D with B as center, and B D or C D as radius. On the arc set off distance equal to C D. Draw F B and E B. Draw A C and A D. On A, C and A, D draw semicircles 1 and 2, with ½" radius and 1" from C and D. Draw lines 3 and 4 for flaps i". Cut around figure with scissors on the full lines. Score on dashed lines. Fold figure inward on lines. Fold flaps outward. Sew flaps in front of pocket ("Linen Floss" or "Columbia
Zephyr") double overcasting or lacing. Punch hole in top, 1" from apex, and press in eyelet with punch. Material: Tagboard.


 
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