Bolt and Latches
#1

Tower bolt / Barrel bolt

A door bolt which moves in a cylindrical casing; not driven by a key.

[Image: bolt.jpg]

Latch

A simple fastening device having a latch bolt, but not a dead bolt; contains no provisions for locking with a key; usually openable from both sides.


Thumb Latch

Thumb latches are two-way latches and work as follows: on the outside (street-side) of the gate is a decorative plate with a thumb depressor. When you depress the thumb, a latch-arm on the inside of the gate lifts and allows the gate to be opened. Closing the gate, the latch-arm should hit the strike, rise up and fall into the catch on its own (a gravity latch).

Thumb latches can be installed only on in-swinging gates and are always double-sided. Some thumb latches are lockable, some are not.

[Image: thumblatch.jpg]

Lift latch - for securing a door in a closed position, usually by means of a flat bar that falls into a catch when pressed by the thumb; for example, see Norfolk latch and Suffolk latch.

Suffolk latch - A type of thumb latch for doors; originally fabricated of iron wrought by hand in England. Attractive in appearance and available in many different designs; .=-

Norfolk latch - A type of thumb latch for a door that has a long metal plate behind the latch to protect the door finish; compare with Suffolk latch. .

Bolt Latch

some bolt latches might remind you of the old days, when you tied a string to a latch, tossed it over the gate, and called it good. Now there are a few spiffier versions of the old stand-by. We offer a nice selection of architectural bolt latches Usually bolt latches can be installed on either side of a gate. They are one way gate latches, operable only from the one side (although a string can get you access from the other side from the old style latch). Bolt latches are sometimes lockable, sometimes not. The lockable ones usually require an additional padlock.

[Image: boltlatch.jpg]

Lever Latch

Lever latches operate in the same way as a ring latch, but instead of a ring on each side, there's a lever handle.
Lever latches can be installed on both in-swinging and out-swinging gates. On out-swinging gates, the latch-arm side will be on the street-side of the gate. The best way to remember is that the latch-arm of the gate latch must be installed on the side that the gate opens toward.
Lever latches can be either gravity-assisted or spring-loaded, depending on the manufacturer. Some lever latches are lockable; some are not.

[Image: liverlatch.jpg]

Mortise Lock

A lock designed to be installed in a mortise rather than on a door's surface.

[Image: lock.jpg]
Reply


Messages In This Thread
Bolt and Latches - by sumit patni - 07-26-2014, 07:07 AM

Forum Jump:


Users browsing this thread: 1 Guest(s)