This section is from the book "Manual Training For The Rural Schools", by Louis M. Roehl. Also available from Amazon: Manual Training For The Rural Schools.

Lumber: 1 piece select hickory 1 3/4"x5"x4' 4". (If hickory is not available, white ash may be used.)
Hardware: 1 iron rivet 1/4"x3 3/4" with 2 washers. 1 iron rivet 1/4"x5 1/4" with 2 washers.
1. Reduce stock to 1 3/4"x5"x4' 4".
2. Lay out the taper for the one-horse end by drawing a line from a point on the back edge of the stock 21" from the two-horse end to a point on the one-horse end 3 1/2" from the front edge.
3. Remove the stock to line with saw and plane.
4. Lay out and cut a 1/4" chamfer on the edges of the stock as indicated in the drawing.
5. Bore 1/4" holes for the rivets 1 1/4" from ends and fasten rivets by securely riveting them.
6. Locate points 2" from ends and 1 1/8" from back edge of stock and bore 5/8" holes for clevises.
7. Locate a point 18" from the two-horse end and 1 1/8" from the front edge, and bore a 3/4" hole for main clevis pin.
 
Continue to: