Does anybody have a idea how to lock dual pocket doors (french doors)? thanks in advance
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There are sources for full-mortise pocket door locks that, with the door case part, when the latching is thrown, a hook rotates down to engage a bar or catch in the part that mortises into the jamb.
Something like that would work for converging doors. Have you done any good web searches for hardware?
Edit: I just did a search and came up with some candidates, like those shown below.
You cannot go wrong by waiting until the opening of business in Santa Ana, CA, and phoning up one of the hardware experts there at Woodwards Ace Hardware. They will steer you right, as they always have done for me.
I would go with their recommendation, rather than some stranger here.
I've seen such locks, but not
I've seen such locks, but not in a long time, so don't know if they're still made. Much like the lock on a sliding patio door. But remember that you need something pretty robust, since the two panels will never line up perfectly with each other.
And consider putting a "flush bolt" at the bottom of one on one panel, the kind that insets into the edge of the door and locks into a hole in the floor.
Try here: http://www.johnsonhardware.com/1521.htm
A normal pocket door latch will work--one door just takes the place of the jamb.
It's extra important to install the doors so there is little side to side movement. A carefully sized grove in the bottom of the doors (ala Garry Katz) with coresponding pin in the floor within the jamb works as good as a guy could wish for.
I'm assuming this is just to keep someone from accidentially walking into the area and not for secure protection from bad people doing mean things.
Adams-Rite makes J hook deadbolts that work for this type of arrangement. I think Baldwin used to and still might also.
http://adamsrite.com/media/pdf/v3/AR_ANSI_Ddblt_MS1850SN-050ser.pdf