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??? I believe that was Andrei ??? animal

Someone out there hat has a belt drive Bridgeport head for sale? Let me know please! Bill in Boulder CO

Wally: Good find and mystery solved. On my earlier Craftsman 12" with Babbitt bearings the holes for gear guard screws are vertical. Raymond

It's funny that this popped up today. I was just out in the garage messing around with my 10F (with the horizontal countershaft so these holes are empty) and was wondering what the unused holes were

Construction holes? Dave

??? the holes in front were for the back gear covers on each side of teh headstock . SOuth Bend dod the same thing with their 9 & maybe some 10" lathes . ??? animal

I have searched thru my 1937 and the 1967 How to Run a Atlas lathe handbooks and I find no information as to their use. In the 1937 book, it shows those with round head screws and

These holes line up with the spindle back gears. ?I wonder if the intention was they could be used with a suitable detent pin for indexing holes not provided for by the 60 holes in the bull gear?

??? MAn that guy spent some time on that . Nice work . ??? animal

Thanks I appreciate it! [email protected]> wrote:

??? Thank you much Jon , new info is great? ! ??? thanks ??? animal

Not all the dimensions are 100% and this travers housing is way off compared to mine but its a very good starting point... https://grabcad.com/library/atlas-10-lathe-1 [email protected]> wrote:

This is my lathe 1955/ have holes also. Sent from phone

This from a Google image search, an old 12" Atlas Craftsman design ( a sold but archived ebay ad photo https://www.ebay.com/itm/166740277903 , more photos there ) with front screw mounted gear covers

While searching for something else just now, I accidentally discovered another mystery hole instance in the old photo album Mark's

The varispeed has two sliding cones.? One is spring loaded, the other is operated by the hand wheel.? If you turn the wheel one way, it widens the cone, and the spring-loaded one will just slide

Measurements from my 10F: 0.40 Inch OD x 5.50 Inch total length.? Both ends? 7/16NF X 0.47 thread length -- US;USAEDFE, 72-74

Possibly someone put them there to mount a spindle lock to?

??? Thanks Jon , these little tidbits are the kind of things that most people don't know . I hope to find out what the? HP is of motor he said I could have too . My inverter is only 4400 watts

Possibly someone had made a spindle lock and made those to mount it to?