Springs under front bench seat

I took out my front bench seat to put in carpet (1960 Comet). Once I got it out, I found two springs hooked to brackets welded to the floor - one under the passenger side and one under the driver side. I assume they are supposed to hook somewhere to the underside of the seat - anybody know where? The seat is back in now and it seems to slide forward and back just fine, but I thought maybe these springs are supposed to help with the sliding adjustment in some way? Thanks.

I also found them under my seat when I removed it. I believe they are to assist the seat to move forward when adjusting. Mine is a bench seat and there was a spring under each side.