Quote:
The boards peg together with two dowel pins for each corner. You could use two long bolts with nuts instead of pegs.
The boards are in pairs.
An example for using them The two longer boards are lengths and the two shorter ones are for width.
In the old days, you pegged the frame as near to the size of your working sandwich (top, batting, backing). Often the backing cloth was larger and was sewn into a tube on two opposite ends to stretch the quilt on the frame. Then the other pair of board were pegged/bolted to secure the the other pair of sides. Sometimes an extra strip of fabric was basted onto the backing fabric and then stitched around the boards to pull the quilt into square so it could be quilted. The frame could be suspended from the ceiling to store it out of the way and lowered to work on in the evenings.
My MIL has a set of boards very similiar to your set.
Send me your address in a PM and I'll try to get you some working drawings to go by.