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I own one of the subject lathes, made about 1948. In my efforts to get it back to working condition I notice two 5/16-18 threaded holes in the headstock casting, below the spindle (see attached image). Can anyone help me understand what these threaded holes were for?
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Those are not factory made.? Perhaps someone had some form of a collet adapter.? If you don’t want them visible, screw allen set screws in them and add a drop of Loctite.?
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On Aug 22, 2024, at 9:06?AM, Busted Knuckle via groups.io <arzander55@...> wrote:
? I own one of the subject lathes, made about 1948. In my efforts to get it back to working condition I notice two 5/16-18 threaded holes in the headstock casting, below the spindle (see attached image). Can anyone help me understand what these threaded holes were for?
<IMG_0816.jpeg>
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Thanks ever so much.
Any clue as to the purpose of the two unthreaded holes in the headstock casting, just below the gear train cover (see image). They appear to be in line with the gears on the spindle.
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Those are not factory made.?
Perhaps someone had some form of a collet adapter.?
If you don’t want them visible, screw allen set screws in them and add a drop of Loctite.?
On Aug 22, 2024, at 9:06?AM, Busted Knuckle via groups.io <arzander55@...> wrote:
?
I own one of the subject lathes, made about 1948. In my efforts to get it back to working condition I notice two 5/16-18 threaded holes in the headstock casting, below the spindle (see attached image). Can anyone help me understand what these threaded
holes were for?
<IMG_0816.jpeg>
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The?work of a previous owner!
On Thu, Aug 22, 2024 at 4:52?PM Busted Knuckle via <arzander55= [email protected]> wrote:
Thanks ever so much.
Any clue as to the purpose of the two unthreaded holes in the headstock casting, just below the gear train cover (see image). They appear to be in line with the gears on the spindle.
Those are not factory made.?
Perhaps someone had some form of a collet adapter.?
If you don’t want them visible, screw allen set screws in them and add a drop of Loctite.?
On Aug 22, 2024, at 9:06?AM, Busted Knuckle via <arzander55=[email protected]> wrote:
?
I own one of the subject lathes, made about 1948. In my efforts to get it back to working condition I notice two 5/16-18 threaded holes in the headstock casting, below the spindle (see attached image). Can anyone help me understand what these threaded
holes were for?
<IMG_0816.jpeg>
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Ralph, These holes on the headstock body are a mystery to everyone.? There are no attachments that go in them and perhaps they are from manufacturing for indexing purposes.
On Thu, Aug 22, 2024 at 2:48?PM Ralph Hulslander via <rhulslander= [email protected]> wrote: The?work of a previous owner!
On Thu, Aug 22, 2024 at 4:52?PM Busted Knuckle via <arzander55= [email protected]> wrote:
Thanks ever so much.
Any clue as to the purpose of the two unthreaded holes in the headstock casting, just below the gear train cover (see image). They appear to be in line with the gears on the spindle.
Those are not factory made.?
Perhaps someone had some form of a collet adapter.?
If you don’t want them visible, screw allen set screws in them and add a drop of Loctite.?
On Aug 22, 2024, at 9:06?AM, Busted Knuckle via <arzander55=[email protected]> wrote:
?
I own one of the subject lathes, made about 1948. In my efforts to get it back to working condition I notice two 5/16-18 threaded holes in the headstock casting, below the spindle (see attached image). Can anyone help me understand what these threaded
holes were for?
<IMG_0816.jpeg>
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Possibly someone had made a spindle lock and made those to mount it to?
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Possibly someone put them there to mount a spindle lock to?
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While searching for something else just now, I accidentally discovered another mystery hole instance in the old photo album Mark's lathes.
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-Wally
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This from a Google image search, an old 12" Atlas Craftsman design ( a sold but archived ebay ad photo , more photos there ) with front screw mounted gear covers leaving the pulleys open upwards and to the rear.
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So, vestigial holes.
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-Wally
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This is my lathe 1955/ have holes also. Sent from phone
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On Aug 23, 2024, at 11:53?AM, I_am Wally via groups.io <wally94087@...> wrote:
? This from a Google image search, an old 12" Atlas Craftsman design ( a sold but archived ebay ad photo , more photos there ) with front screw mounted gear covers leaving the pulleys open upwards and to the rear.
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So, vestigial holes.
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-Wally
?
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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?
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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 washers installed.
Interesting that they align with the back gears.
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?
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??? 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
On 8/23/24 1:37 PM, Jim F wrote:
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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
washers installed.
Interesting that they align with the back gears.
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?
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Construction holes?
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Dave
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On 08/23/2024 3:37 PM CDT Jim F <lacityjim2@...> wrote:
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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 washers installed.
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Interesting that they align with the back gears.
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?
?
?
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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 for.? I had also guessed that they might be a direct indexing method based off of the gears like Pumpguy did earlier.
On Fri, Aug 23, 2024 at 11:44?AM I_am Wally via <wally94087= [email protected]> wrote: While searching for something else just now, I accidentally discovered another mystery hole instance in the old photo album Mark's lathes.
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-Wally
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Wally: Good find and mystery solved.
On my earlier Craftsman 12" with Babbitt bearings the holes for gear guard screws are vertical.
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Raymond
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Jim F
Renaissance 1
Will Brooks