A slightly more involved table feed would be a motorized linear actuator.

--
WB
..........
metalworking projects
www.kwagmire.com/metal_proj.html


"Bill Noble" wrote in message
...
a friend of mine has two Crafstman drill presses with 2 3/4 inch columns.
He acquired from some mystery source a raising mechanism I just helped him
install on one of them - I've never seen one like it - it consists of a
gear assembly, an acme screw, and a bottom pillow block. the bottom pillow
block can be clamped to the column, and with the top (gear assembly) and
the table loose, you can turn the crank which through a gear rotates the
acme screw and raise/lower the table - every other unit I've seen has a
rack rather than an acme screw - so, for the group

1. anyone know who might have made this thing (there is no label on it,
it's far from new - probably pre WWII to my eyes - can't find it in Sears
catalogs, doesn't say Sears or Crafstman on it

2. any idea where I might find another for him?

3. any idea where to find a raising mechanism of any kind that would work
on a 2 3/4 inch column?

--
Bill
www.wbnoble.com