The extra slider is not supposed to enter the hole in the strike plate. It's 
purpose is to keep the main latch from withdrawing from the hole when the door 
is closed. When both are extended as when the door is open, it will allow the 
latch to withdraw as the door closes past the striker plate. Once the main 
latch has engaged the hole and the small one is withheld by the plate you 
cannot slip the main latch back into the door with something thin like say a 
credit card.If that little bar does enter the hole along with the main latch 
then the main latch can be slid back into the door and the door open without 
benefit of the key.

Hope this helps clear that up for you.


  ----- Original Message ----- 
  From: Kevin Doucet 
  To: [email protected] 
  Sent: Tuesday, February 24, 2009 8:09 PM
  Subject: Re: [BlindHandyMan] door nob question


  Hi Dan,

  I already have a door knob with a key lock and it does have the extra 
  part on the slide. I am just asking what is the suggested way to make 
  the receiving whole in the door jam large enough to except the 
  plunger plus the extra part on the slide.

  Thanks for any help you can offer.

  At 09:12 AM 2/24/2009, you wrote:

  >Not all locking knobs have that extra part on the slide. Depends on how
  >secure you want the lock to be. There are those very simple door knob
  >locks that are mostly meant to be locked from the inside and not unlocked
  >from the outside, but anyone can unlock them from the outside with a
  >screwdriver. Or the push button locks that you see on bathroom doors a
  >lot.
  >
  >--
  >Blue skies.
  >Dan Rossi
  >Carnegie Mellon University.
  >E-Mail:<mailto:dr25%40andrew.cmu.edu>[email protected]
  >Tel:(412) 268-9081
  >
  >
  >
  >__________ Information from ESET Smart Security, version of virus 
  >signature database 3887 (20090224) __________
  >
  >The message was checked by ESET Smart Security.
  >
  ><http://www.eset.com>http://www.eset.com

  Thanks.

  Kevin Doucet
  [email protected]

  confuse as says

  Blind man with unmarked forehead has large belly!


  

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