Why 10" P&W tool maker lathes from 100 years ago had so many change gears
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  1. #1
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    Default 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 on

  2. Likes Limy Sami, AD Design, pressbrake1 liked this post
  3. #2
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    My guess would be the ones over about 40 are for turning. Given the state of cutting tools when that lathe was built you might really need .0067 feed per revolution.

    Also they might have put all the combinations you could get with the gear set provided.

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    Is that a quick retracting topslide / compound ?

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    Saving the pictures for posterity.

    Compound slide: I think it's a leftover of a relieving attachment.

    Paolo

    00x0x_5tqhzkxsc2r_1200x900.jpg

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    00o0o_5r4s0bhmcuw_1200x900.jpg

  7. #5
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    I'd like to see what is behind the closed door. When new, a great array of change gears lived in there

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    My old 1924 Dalton Combination had a fairly long thread chart but included metric combinations also.Lucky for me it came with a complete set of gears.

  9. #7
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    This one ended on ebay yesterday @ $510, in Wash DC area. ebay, item # 184242633130

    https://www.ebay.com/itm/1907-Pratt-amp-Whitney-Toolmarkers-Lathe-w-Harley-3-speed-Trans-accessories-/184242633130?hash=item2ae5b779aa%3Ag%3APHUAAOSw2Fd ei8Vy&nma=true&si=vhMVJNJnSZlUr7OYvsRBgq%252FeY4s% 253D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047 675.l2557


    pw_4.jpgpw_3.jpgpw_2.jpgpw_1.jpg



    I didn't upload all the pictures of the drive mechanism. Seller stated it was a Harley-Davidson transmission.

  10. #8
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    Quote Originally Posted by morsetaper2 View Post
    This one ended on ebay yesterday @ $510, in Wash DC area. ebay, item # 184242633130

    https://www.ebay.com/itm/1907-Pratt-amp-Whitney-Toolmarkers-Lathe-w-Harley-3-speed-Trans-accessories-/184242633130?hash=item2ae5b779aa%3Ag%3APHUAAOSw2Fd ei8Vy&nma=true&si=vhMVJNJnSZlUr7OYvsRBgq%252FeY4s% 253D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047 675.l2557


    pw_4.jpgpw_3.jpgpw_2.jpgpw_1.jpg



    I didn't upload all the pictures of the drive mechanism. Seller stated it was a Harley-Davidson transmission.
    The Harley transmission is worth a lot more than that lathe sold for.

  11. #9
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    That's a very interesting "wide" cross-slide.

    Paolo


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