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Threading on Birmingham lathe

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  • Threading on Birmingham lathe


    Somebody [bold]PLEASE[/bold] explain to me how to thread on one of these small imports.
    I am a Machinist by trade but I will admit
    most of my time as a machinist has been spent
    on big boring mills and verticle lathes.
    I do thread on a tool room lathe from time to time and have no problems but I just can't
    figure out cutting threads on this Birmingham.
    It is a 11" x 26" with one screw for both feeding & threading.The thread chart looks like this.
    • LEVER I II I I I II
    • - a 45 48 36 36 36 36
    • - b 40 40 40 44 46 40
    • - B 8 9 10 11 11.5 12
    • - A 16 18 20 22 23 24
    • - C 32 36 40 44 46 48


    It has 2 levers one marked A B C and an other
    marked I II III.
    Someone [bold]PLEASE[/bold]


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