Welcome to our world exploring the Historical, Political and Technological aspects of Locks, Keys and Safes

Page 2 of 3 FirstFirst 123 LastLast
Results 11 to 20 of 25
  1. #11
    Join Date
    Nov 2009
    Location
    Idaho, USA
    Posts
    16
    Country: United States

    Default

    They decided to punch the rivet/pin out of the inner knob this morning, which allowed them to disassemble the knob. The cylinder was rekeyed by removing the flat retainer across the top of the chambers. Apparently three of the pin chambers also had a thin rod inside of each spring . . . maybe an early anti-bump defense?

    Click image for larger version. 

Name:	10052.jpeg 
Views:	11 
Size:	159.6 KB 
ID:	22008Click image for larger version. 

Name:	10053.jpeg 
Views:	9 
Size:	141.2 KB 
ID:	22009Click image for larger version. 

Name:	10061.jpeg 
Views:	15 
Size:	115.5 KB 
ID:	22010

  2. #12
    Join Date
    Oct 2010
    Location
    Tonawanda, NY, USA
    Posts
    900
    Country: United States

    Default

    Quote Originally Posted by Shieldr View Post
    They decided to punch the rivet/pin out of the inner knob this morning, which allowed them to disassemble the knob. The cylinder was rekeyed by removing the flat retainer across the top of the chambers. Apparently three of the pin chambers also had a thin rod inside of each spring . . . maybe an early anti-bump defense?

    Click image for larger version. 

Name:	10061.jpeg 
Views:	15 
Size:	115.5 KB 
ID:	22010
    Also apparently a master ring cylinder with two shear lines as patented by Edward O'Keefe, a New York City locksmith on Nov. 12, 1889! He assigned the patent to P & F Corbin where it became a milestone in the development of master keying.*

    *adapted from Corbin Russwin Cylinder Manual by the late A.J. Hoffman and others.

    Pete Schifferli

  3. #13
    Join Date
    Dec 2009
    Posts
    1,485
    Country: United States

    Default

    Quote Originally Posted by Pschiffe View Post
    Also apparently a master ring cylinder with two shear lines as patented by Edward O'Keefe, a New York City locksmith on Nov. 12, 1889! He assigned the patent to P & F Corbin where it became a milestone in the development of master keying.
    O'Keefe's patent is US 414,720 which was filed January 18, 1889.

    But W.H. Taylor filed a patent for the same idea June 4 and was issued US patent 415,178, assigned to Yale & Towne, on the same date.

    Did Yale ever produce ring-mastered cylinders? I wonder if Corbin sued, citing precedence due to their earlier filing date.

  4. #14
    Join Date
    Oct 2009
    Location
    Cleveland, Ohio USA
    Posts
    1,433
    Country: United States

    Default

    I think they did the right thing because that looks like the oddball version that we rarely saw at the Cleveland Key Shop. Double rollers cylinder too. Don't believe we ever saw any Yale Double rollers. A.J. Hoffman was just a kid working at MASCO A-One lock when I was working at the key shop.

  5. #15
    Join Date
    Oct 2010
    Location
    Tonawanda, NY, USA
    Posts
    900
    Country: United States

    Default

    Quote Originally Posted by wylk View Post
    O'Keefe's patent is US 414,720 which was filed January 18, 1889.
    But W.H. Taylor filed a patent for the same idea June 4 and was issued US patent 415,178, assigned to Yale & Towne, on the same date.
    Did Yale ever produce ring-mastered cylinders? I wonder if Corbin sued, citing precedence due to their earlier filing date.
    I don't know of any litigation and am unaware of any "master ring" cylinder ever produced by Yale. They did offer "duplex" master keyed locks during the era with two seperate mortise cylinders to avoid the problems associated with split-pin master keying. They later adopted the "bicentric" cylinder system with two independent plugs in one cylinder for the same purpose. Their "multiplex" keyways for large master key systems were first introduced in 1896 and are still in use today. BBE who is a member here, and once employed by Yale; may have more info on the early years.

    Pete Schifferli

  6. #16
    Join Date
    Dec 2009
    Posts
    1,485
    Country: United States

    Default

    One interesting difference with the Taylor patent is that it describes a sleeve which is cut into at least two parts. This sets it apart from O'Keefe's patent, so technically there is no conflict between the two patents.

  7. #17
    Join Date
    Nov 2009
    Location
    Idaho, USA
    Posts
    16
    Country: United States

    Default

    The lock cylinder has a single plug and body, no concentric rotating rings.

  8. #18
    Join Date
    Oct 2010
    Location
    Tonawanda, NY, USA
    Posts
    900
    Country: United States

    Default

    Quote Originally Posted by Shieldr View Post
    The lock cylinder has a single plug and body, no concentric rotating rings.
    I believe you, but the cylinder certainly "looks" like it is master ring, compare the thumbnails below and observe the slight difference in housing sizes between the conventional, shown on the left and master ring key-in-knob/lever cylinder shown on the right:
    Click image for larger version. 

Name:	CorbinRusswinConventionalKnKcylinder.jpg 
Views:	4 
Size:	1.3 KB 
ID:	22021Click image for larger version. 

Name:	CorbinRusswinMasterRingKnKcylinder.jpg 
Views:	3 
Size:	1.1 KB 
ID:	22022


    Pete Schifferli

  9. #19
    Join Date
    Oct 2009
    Location
    Cleveland, Ohio USA
    Posts
    1,433
    Country: United States

    Default

    Here is another version, but a bit more obvious how it comes apart.

  10. #20
    Join Date
    Oct 2009
    Location
    Cleveland, Ohio USA
    Posts
    1,433
    Country: United States

    Default

    Uploading failed. Have to do it at home.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •