On Apr 2, 12:37*pm, "Percival P. Cassidy" wrote:
On 04/02/08 12:11 am mm wrote:





What is the difference between sgl cyl & dbl cyl? -- Thanks

One is a seagull cylinder and the other is a Double Stuff Oreo
cylinder.

With double, if someone breaks in through a window, they can't unlock
the door to carry things out.

Also, if you have windows in that very door, they can't break the
glass and unlock the door.

I put in double when I had an apartment, because the fire escape was
accessible to others. *But I never locked that deadbolt when I was
home, because I didn't want to depend on finding the key if there was
a fire, or if I were in a hurry. *Even with various roommates, it was
easy to get them to follow the same rule. *(and they weren't very good
learners otherwise.)

A few years back I lamented that I had been unable to find locks like
the lock (maybe Yale) I had on my front door in Australia: one did not
need the key to lock it, but, once the button was pressed and the door
was closed, the deadbolt tripped, so that the key was needed to open it
either from the inside or from the outside.

I was told that a lock that could not be opened from the inside without
a key was a safety hazard in the event of a fire and was a violation of
the Code.

Perce- Hide quoted text -

- Show quoted text -

i've got old double cylinder vertical deadblots (dont' see them much
any more) which were expensive at the time, but clever; sounds
something like yours.
if you open the door from the inside and go out, if you trip a lever,
it will lock without the key, but if you don't trip the lever, it
won't, so you can't accidentally lock yourself out, only deliberately;
on the other hand, if you open it from the outside and close it, it
automatically locks again. i wish they still made locks this smart, i
removed them from my last house and reinstalled them in my new one.
which involves fixing the big hole vertical deadbolts leave in the
molding.