Geneva Lathe Dimensions

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  • #48504
    david pierce
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    • Topics Started: 90
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    Bob,
    I measured a Wolf Jahn, Bergeon and a Lorch. All of them had a 20mm bed and measured 40mm from the top of the bed to the center of the spindle or 50mm from the center of the spindle to the center of the bed. All of the components can be interchanged among them. Check your Boley, I would think that it would be the same.
    david

    #52982
    Bob Tascione
    Moderator
    • Topics Started: 38
    • Total Posts: 1559

    Thanks David,
    That’s good to know. Distance from bed center to spindle center looks like 51mm. (eyeballing with a caliper) and bed dia. exactly 20mm. Getting 45mm from lathe bed to s/center though so quite a bit off on that dim. I’ll double check on the s/center height using a height gage and will let you know.
    Appreciate your checking that for me.

    Adios for now,
    Bob

    #52983
    arutha
    Participant
    • Topics Started: 85
    • Total Posts: 1536

    I seem to remember there were differences with the Boley, I am almost certain the collets are different, is this a 6mm or 8mm?

    #52984
    david pierce
    Participant
    • Topics Started: 90
    • Total Posts: 1360

    Paul and Bob,
    Both 6mm and 8mm measured 40mm from the top of the bed to the center of the spindle. If you have a collet center put it in the lathe and measure from that point to the top of the bed. I can not imaging why Boley would go to 41mm.
    david

    #52985
    Bob Tascione
    Moderator
    • Topics Started: 38
    • Total Posts: 1559

    Hi David,
    I don’t know about the 41mm either? The measurement was 45mm. Just measured with height gauge and pin gauge in spindle and get 45mm from bed top and 52mm from bed center.

    Bob

    #52986
    Bob Tascione
    Moderator
    • Topics Started: 38
    • Total Posts: 1559

    Sorry meant to say 44mm from bed top to spindle center! 51mm spindle center to bed center.

    Bob

    #52987
    david pierce
    Participant
    • Topics Started: 90
    • Total Posts: 1360

    Bob,
    It looks like it is different. How are your silver soldering skills?
    david

    #52988
    Bob Tascione
    Moderator
    • Topics Started: 38
    • Total Posts: 1559

    Hi David,
    Yes I think you’re right. I just found a post on Practical Machinist that seems to confirm the 44mm height. I’ll post the link below just for the reference.
    I’ve already ordered some stuff called MuggyWeld that I wanted to try out. Stronger than silver solder yet doesn’t need to be heated too much higher than Silver Solder. Thought I would try it as it may prove valuable in many other horological applications.

    Here’s the link. Scroll down the page a bit.
    http://www.practicalmachinist.com/vb/antique-machinery-history/unknown-bergeon-model-c-d-type-micro-lathe-115725/

    Thanks David.
    Adios for now,
    Bob

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david pierceGeneva Lathe Dimensions