Oliver 15 Disc Sander.
This machine came from federal government surplus although I am not sure what agency or from where.
I purchased this from my buddy Mick, a local woodworker.
The table on this sander is supported only on the right side where
the adjustment also is located. One of the two bolts was in
place and the other was not, the casting had broken. Mick fixed
this up by drilling and tapping a hole completely through the
table and countersinking a bolt from the top of the table into
the casting below. This is holding very well for now, but I am
not impressed with the weight of the table and anything you put
on the table exerting that much torque on two bolts. I assume
that the purpose of this one sided holding mechanism is to
provide easy access to the disc for changing the sandpaper.
In a high production shop I could see the benefit, but in my
shop, I will probably be changing the paper twice a year.
The sander was not in too bad of shape when Mick purchased it. He
then went on and cleaned it up and put on a new coat of gray paint.