My maternal grandmother did that to a quilt that was worn our that my paternal grandmother had done. It is now in my possession. I was born in 1937 and I know the encasement was done before 1943, the year my paternal grandmother died. I don't remember the quilt being other than the way it is now. I haven't been brave enough to undo it to find out what the original quilt's pattern was. My maternal grandmother tied it instead of quilting it, as she only quilted by hand.