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  1. #1
    Join Date
    Jun 2016
    Posts
    8
    Country: United States

    Default Identification: Changeable bit key

    Hello All,
    I'm trying to identify the manufacture and any information on a changeable bit key I recently purchased.
    The key is ~ 6 inches long. The bow is 1.5 inches wide and the brass bit is approximately 1 inch wide X 1.25 inches ht.
    The key is made of brass with steel movable bits. Each of the three steel bits has numbered calibration marks that allow the user to record the settings.
    By loosening the screw at the end of the shaft the steel bits move freely (tightening the screw secures the steel bits in place).
    Each steel bit is crimped at the ends to prevent them from falling out of the key.
    The bow has Prov. RI and "lettering worn off" Lock Co. on one side and Patented Dec.17.61 on the other.
    Any info. on this key would be greatly appreciated. Please refer to attached photos.
    Thanks,
    Don
    Attached Thumbnails Attached Thumbnails Changable bit key 3.jpeg   Changable bit key 2.jpeg   changable bit key 4.jpeg   Changable bit key 5.jpeg   Changable bit key 6.jpeg  


  2. #2
    Join Date
    Jun 2016
    Posts
    8
    Country: United States

    Default Identification changeable bit key

    Sorry forgot to post photo of bit with calibration marks.
    Attached Thumbnails Attached Thumbnails Changable bit key 1.jpeg  

  3. #3
    Join Date
    Dec 2009
    Posts
    1,485
    Country: United States

    Default

    The patent date seems to refer to US patent 33,931 for a lock invented by R. S. Eddy and A. O. Miles of Nashua, New Hampshire. The patent is largely for the lock though it is mentioned that the key is adjustable.

  4. #4
    Join Date
    Jun 2016
    Posts
    8
    Country: United States

    Default

    Thanks,,,,appreciate the info.

  5. #5
    Join Date
    Mar 2010
    Location
    Boston
    Posts
    16
    Country: United States

    Default

    u.s. lock co.
    Attached Thumbnails Attached Thumbnails u.s. lock co. key.jpg  

  6. #6
    Join Date
    Jun 2016
    Posts
    8
    Country: United States

    Default

    Thanks,,,,great info & photo.

  7. #7

    Default

    The patent is largely for the lock though it is mentioned that the key is adjustable.

  8. #8
    Join Date
    Jun 2016
    Posts
    8
    Country: United States

    Default changeable bit key

    Thanks for the info. Would you happen to have and specific info.
    on the U.S. Lock Company, Providence, RI (when they were in business,
    what products they made, etc.)
    Thanks,
    Don

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