Help, can anyone tell me more about this Quilting Frame

Yesterday, a fellow gave me this frame.  He said his mother quilted on it all the time.  He said there were no other parts to the frame.  However, there has to be pieces missing, which is not problem I can have them made.  I'm trying to figure out how the frame was used.  No poles to turn the quilt, no pole to hold the frame together.  If anyone has a clue, please let me know,otherwise it's going in the trash.
thanks everyone.  You know as I look at it, I'm almost thinking that it isn't a quilting frame at all.