John,
If it body carper (27" widths sewn together) then its got to be an old one, could be a Crossley Axminster. If it is and its turned at the edges, although its not on gripper are you sure its not fitted with Ring & Pin. If it is, chances are that you can easilly lift it, as the rings that are attached to the carpet backing can become separated from the pin that is in the floor a few inches away from the skirting board. If this is the case, you need to get the rings back on the pins and be carefull not to wet that backing or the carpet will curl away from the sides.
Dave.