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  1. Replies
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    You make them - like 99% of 100 (and more) year...

    You make them - like 99% of 100 (and more) year old machines. Or you get fantastically lucky and acquire a exact duplicate donor machine.

    Scans from back in the day - though who knows if yours is...
  2. Why 10" P&W tool maker lathes from 100 years ago had so many change gears

    Not something you see often - a legible thread index plate that goes on and on

    PRATT AND WHITNEY LATHE - tools - by owner - sale

    And no, the D type chuck needs some work before it will screw...
  3. Its an old engine lathe. It has a "semi" QC gear...

    Its an old engine lathe. It has a "semi" QC gear box - you can tell by its listing of multiple "stud" gears

    Unlikely any info will turn up - especially "manuals"

    Here is some handy generic...
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    Джека - вы делаете хорошую работу в том, чтобы...

    Джека - вы делаете хорошую работу в том, чтобы заставить нас "янки" понять вас

    :d

    (supposed to be Jeka - you do a good job of making us "yankees" understand you)
  5. And the useful content of my email to OP:

    And the useful content of my email to OP:
  6. Scroll sideways on page two to have another view....

    Scroll sideways on page two to have another view. This is incidentally 1934

    http://vintagemachinery.org/pubs/2103/17534.pdf

    ph
  7. R.K. LeBlond is smiling down at you:D

    R.K. LeBlond is smiling down at you:D
  8. So - ever find something to screw on the 3 1/2 -...

    So - ever find something to screw on the 3 1/2 - 4 spindle nose?
  9. 14,500 LB P&W Jig Bore - but cheated a bit in...

    14,500 LB P&W Jig Bore - but cheated a bit in making the 90 degree corner.

    Borrowed the 25 ton ram off the shop press and arranged for it to push against floor while at a slight tilt to "ooch"...
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    And three more slow BACK GEAR speeds (unless...

    And three more slow BACK GEAR speeds (unless broken or missing parts) - when you figure that out

    Have one of these?

    http://vintagemachinery.org/pubs/1617/5795.pdf
  11. B&S 9 too small, B&S 10 too large - and both are...

    B&S 9 too small, B&S 10 too large - and both are much longer
  12. Replies
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    Its what made possible precise devices over a...

    Its what made possible precise devices over a hundred years ago

    Think tooling for volume production of such as pocket watches

    great read on how to

    Accurate Tool Work - Clarence Leon...
  13. Check out the 1934 12 and 14 brochures on VM -...

    Check out the 1934 12 and 14 brochures on VM - 12" had MT3 in 1.75 quill and 14" had MT4 in 2.375 quill

    You never know how much fooling around - even modifying to fit - went on in the last 80 odd...
  14. Replies
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    Go to post #41 Open first photo Look for...

    Go to post #41

    Open first photo

    Look for feature "a"

    That is what the keyway amounts to in the bearing

    The key would have to be lifted out (after undoing ring nut and moving item #80 to...
  15. Beats me why no link in opening post - scroll...

    Beats me why no link in opening post - scroll down to bottom, its second from left

    Used Machinery & Industrial Equipment | HGR Industrial Surplus

    Member Joe Michaels could probably tell us how...
  16. Replies
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    The pencil and paper age - I was fifty that year....

    The pencil and paper age - I was fifty that year.

    Key way - part 79 on list is the key. Any such bearing race would be hardened and ground - so good luck on "cutting" on it

    Ebay item I posted...
  17. Replies
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    Not too tough to come up with - though there is...

    Not too tough to come up with - though there is no forgiving how nearly perfect they have to be - the concept is dirt simple - making an available and somewhat smaller OD non flanged bearing do the...
  18. "same size" refers to OD of chuck (12") not...

    "same size" refers to OD of chuck (12") not thread (it isn't a threaded spindle)
  19. Replies
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    Nearing ninety years old They still sold plain...

    Nearing ninety years old
    They still sold plain spindle bearings then on the spindle - fine if in great shape, not worth fooling with if not - unless you would rather have a project than a lathe...
  20. Replies
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    There are TWO photos posted in that post #4 - the...

    There are TWO photos posted in that post #4 - the second one is the specs - see the right hand column for the 16" specs
  21. About 20 years ago I bought both new four jaw and...

    About 20 years ago I bought both new four jaw and three jaw for the Monarch, same size. The three jaw still sits on the floor, never been on the lathe
  22. Replies
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    Nothing but FLANGED bearings in Post #41

    Nothing but FLANGED bearings in Post #41
  23. Replies
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    See post #4 - HERE ARE THE SPECS

    See post #4 - HERE ARE THE SPECS
  24. Replies
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    450 = old or large Here is a Model A from mid...

    450 = old or large

    Here is a Model A from mid to early thirties

    283358

    Here are the specs on the Model A from January 1937 showing less than 500 RPM top speed on the 16"

    283359
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    In '48 there were Model A and Model X in that...

    In '48 there were Model A and Model X in that size. The A had 12 speeds and the X had 24 speeds. Here are some brochure pages on the largest "small" Model X

    283353283354283355283356283357

    "...
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