On 3/25/2014 9:41 AM, dpb wrote:
On 3/25/2014 9:24 AM, Bill wrote:
...

Maybe he means you can cut on either side of the blade with a miter
guage (I see 2 miter guage slots).
...

No, he means it is dual arbor -- see link in other followup.

See the big round casting? The two arbors rotate in there to allow setup
for production work between two blade setups just by rotating arbor
position instead of changing blade. Dado on the other was typical setup.

Here's a Fagan, not Oliver, patent but same idea. Quick search didn't
really find a good picture of an Oliver itself that clearly shows the
dual arbor arrangement...there was a 260 in the ww shop down at Navy
shipyard in Norfolk where my cousin was stationed way, way, back...

http://www.datamp.org/patents/displayPatent.php?id=30352

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