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unknown hand tool

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Tools and Hardware6157 of 9268Don't know what this is Very sharp point It retracts Can anyone help me figure out what this is? I'm stumped!
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    Posted 7 years ago

    Scrounger
    (2 items)

    My dad picked this up as part of an estate sale in OK, it appears to be a hand tool. Overall length is about 10" and the gear head is 4" dameter.
    Gears are free and when cranked the shaft rotates half a turn then changes direction goes haft a turn changes again. The bit on the end is flat metal held in place in the split shaft by a cotter pin.

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    Comments

    1. slackjack, 7 years ago
      This is a tool for lapping or refacing the valves in an automobile engine
    2. Scrounger Scrounger, 7 years ago
      I should also note. I did not find any sptampings, markings, numbers or any thing to help identify this.
    3. Scrounger Scrounger, 7 years ago
      Thank you for the info Slackjack. I never would have thought auto. My mind was stuck on a wood tool. Could you possibly direct me to where i coulddig up a few more details on it?
    4. blunderbuss2 blunderbuss2, 7 years ago
      I don't see that Slack.
    5. AzTom AzTom, 7 years ago
      Good call Slackjack. There should be a rubber suction cup on the end.
    6. Scrounger Scrounger, 7 years ago
      No suction cup, and the handle is gone. But its still a cool piece. My dad was happy to find out what it was.
    7. Rustfarm Rustfarm, 7 years ago
      These early lapping tools did not always use a suction cup , valve heads were slotted or had two small circular indents that the tool fit into. Sometimes the tip on the end of the tool could be reversed for different indents. I just gave one these to a mechanic friend of mine , it also has no markings to identify the maker. The cotter pin in the end is correct , it makes the removal and turning of the tip a tool free task.
    8. Scrounger Scrounger, 7 years ago
      Rustfarm,
      What you describe fits what is attached. The flat piece on the end has nubs on the outsides, and itdoes appear they are different on each side. Thank you for the info.
    9. slackjack, 7 years ago
      http://www.yesterdaystractors.com/B1SB9050_26277.htm I am surprised one can still buy this tool.
    10. Scrounger Scrounger, 7 years ago
      Thank you for the link.
    11. hotairfan hotairfan, 7 years ago
      I agree with slackjack. If you look at the end of the blade that is in the front of the tool, you will see two notch type protrusions, one on each end. these are to fit into the pin holes of the valve face, as many valves had. This would assist in gripping the valve when lapping the valve seat . ......hotairfan

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