Identify tool II

Discussion in 'Horological Tools' started by Don Dahlberg, Feb 16, 2018.

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  1. Don Dahlberg

    Don Dahlberg Registered User
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    Aug 31, 2000
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    Here is a second tool at the NAWCC Museum that we cannot identify. The small piece with all the grooves is a dovetail slide. The large top is also a dovetail slide left and right on the bottom piece. What is it?

    Tool2_1.JPG
    Tool2_2.JPG
    Tool2_3.JPG

    Don Dahlberg
    NAWCC volunteer
     
  2. sharukh

    sharukh Registered User
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    Oct 10, 2011
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    This is a shot in the dark.

    Could it be a type of a cross slide with the grooves giving a back and forth movement (by a rack and pinion mechanism) of the whole piece while the knurled knob could be used to limit the actual movement ? The triangular tab might limit the amount of movement possible using the rack and pinion ? Somewhat like setting up a depth of cut using the knurled knob and then using the rack and pinion for repetitive but equal actions ? Would be useful in a gear cutting or topping tool.

    Sharukh
     
  3. gmorse

    gmorse Registered User
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    Hi Don,

    Have you looked in Crom?

    Regards,

    Graham
     
  4. Charlie O.

    Charlie O. Registered User
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    Feb 19, 2018
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    I've read a description somewhere, but have don't recall where. One of Ted Corm's book would be my first guess.

    The small slide faces a lathe spindle. The large knob under it adjusts the height. A part, perhaps a jewel being drilled, is shellacked to the face of the slide. The notches let you advance or withdraw the slide with a finger.
     
  5. Charlie O.

    Charlie O. Registered User
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    That's Crom....
     
  6. Charlie O.

    Charlie O. Registered User
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    There is a picture of the sort of lathe this was used on in an earlier thread:

    Early Continental Jeweling lathe.
    Discussion in 'Horological Tools' started by Ralph, Oct 21, 2015.
     
  7. Firegriff

    Firegriff Registered User
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    How do I look up Ted Corm is it a referance book or a web site all i get is mostly how to cook Corm?
     
  8. gmorse

    gmorse Registered User
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    Hi Firegriff,

    It's a series of books on horological tools and machines by Theodore 'Ted' Crom, which are now very expensive, (even if you disregard the ridiculous amounts charged by some US booksellers)!

    Have a look on bookfinders.com.

    Regards,

    Graham
     
  9. Firegriff

    Firegriff Registered User
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    I found one $713.00 is pretty steep.
     
  10. topspy

    topspy Registered User
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    Does the NAWCC library not have a copy of Crom's books? That would be a huge surprise.
     
  11. BLKBEARD

    BLKBEARD Registered User
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  12. BLKBEARD

    BLKBEARD Registered User
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    Easy there Graham.

    Are you saying there are no price gougers on your side of the pond??
    ;)
     
  13. gmorse

    gmorse Registered User
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    Hi Blkbeard,

    Of course there are, but they don't seem to be quite so ambitious!

    Regards,

    Graham
     

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