In article , Tim S
writes
Scabbydug coughed up some electrons that declared:

For Tim, if you do want euro then you can get double cylinders that allow
unlocking from the outside with the key inserted inside but they are the
exception rather than the norm. I can't for the life of me remember the
term used to describe such cylinders but a locksmith will know what
you're on about and should do supply only, they're an easy fit.

Cylinder with thumbturn is the general term, in premises such as hotels &
guest houses the fire officer usually insists on them.
On external doors in private properties the insurance companies are a bit
iffy about them, if someone breaks in through a window for instance, they
can open the door from the inside and let their mates in and escape easily
with the loot.

Thanks both of you - I know what to ask for now

A thumbturn wasn't what I was referring to but it sounds like you're not
to fussed about having the door openable from the inside without a key
(which is what a thumbturn cylinder does). The original problem (aside
from the slam lockout) was that leaving a key on the inside of a double
cylinder (keyslot on inside and outside) usually means that you can't
unlock the door from the outside. The name of a double cylinder where
this isn't a problem still escapes me but it something like safety
cylinder (but isn't).

One day, when I get fancy, I'd love to put an electronic proximity lock on,
so I can just walk in when laden with shopping.

Nice idea but they just don't make them strong enough.
--
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