This section is from the book "Busy Hands: Construction Work For Children", by Isabelle F. Bowker. Also available from Amazon: Busy Hands: Construction Work for Children.
Material: A piece of board one inch longer than the waist measure, two inches wide and half an inch thick; two pieces of board two inches square; dark red beads; light blue beads; a spool of dark red silk; a small hammer and brads.
Of the three pieces of board make a loom. (Fig. 1.)
Hammer the brads into the top of the small boards a and b, Fig. 1.
Let the distance between the brads be equal to the size of the beads to be used.
Suppose the beads are 1/8 inch wide, and the belt is to be made 1 3/8 inch wide. Then there should be twelve brads at the top of a and twelve at the top of b (Fig. 1), and the distance between each two brads should be 1/8 inch.
Take the spool of dark red silk and fasten the end of the silk securely to the brad x, at the top end of b. (Fig. 2.) Bring the silk across to brad y at the top end of a. (Fig. 2.) Bring the silk around c, across to d, around g, across to e, around h. etc., back and forth across the loom and fasten securely at brad k.

Fig 1

Fig 2.

Take a needleful of dark red silk, and fasten the end securely to the first cross strand, (m, Fig. 2.)
String five red beads, one blue bead and five red beads.
Lay the string across the strands of silk on the loom.
Arrange the beads so that each bead lies between two cross Strands of silk.
Put the needle back through this string of beads so that the needle passes under each cross strand.
Continue to add rows of beads until the length required for the belt is completed.
The beads in each row are as follows:
1. Five red; one blue; five red.
2. Four red; three blue; four red.
3. Three red; five blue; three red.
4. Two red; seven blue; two red.
5. One red; nine blue; one red.
6. Two red; seven blue; two red.
7. Three red; five blue; three red.
8. Four red; three blue; four red.
9. Five red; one blue; five red.
Begin again with No. 1 when the ninth string is completed.
When the beadwork is completed, slip the double silk ends x, d, g, etc., and y, c, e, h, etc., up over the top of the brads.
Sew a piece of ribbon across the ends and fasten a buckle to the ribbon.
By following the directions given above you will have a series of blue diamonds in a red setting.
However, any design may be chosen and the beads arranged to work out that particular figure.
It is always best to make a complete drawing of the belt before beginning to work with the beads. Waist measures differ so that the design given above might begin with a complete blue diamond at one buckle and end with a half diamond at the other buckle.
On the other hand, beads vary in width. Few beads are 1/8 inch wide. With smaller beads more cross strands would be required to obtain the desired width. So to overcome these difficulties it is best first to purchase the beads to be used, get the waist measure, and determine upon the width of the belt, and then make a drawing to meet the exact needs of the case.
 
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