Search. The main difference between a sprung and an unsprung doorknob is that a sprung doorknob has a spring mechanism to return the doorknob to its original position after use. When looking for a new doorknob, the specifications will state if the doorknob is sprung or unsprung.
Sprung is a term used to indicate that a door handle or door knob id fitted with a spring in the backplate or rose, which means the door handle will return to position once released. Unsprung refers to a handle which will use the door lock itself to return to position.
A mortice latch is the bolt that holds the door in it's closed position and is operated by a spindle which passes through the door and is in turn operated by a pair of door knobs or handles. The latch contains the spring which enables the door knobs/handles to return to their original position.
A sprung multipoint handle includes a spring cassette in the rear of the handle which has enough tension to return the handle to its original position after use.
To have the door function properly, you will have to make sure that the door knob you buy is the correct size for your door. The standard size for a door knob diameter is either 2 3/8 inches or 2 3/4 inches and these knobs will usually fit doors that are anywhere between 1 3/8 inches to 1 3/4 inches thick.
If you find you have a lower-quality door mechanism, it would be wise to choose a sprung doorknob to prevent the latch from loosening further. By selecting a sprung doorknob, your doors will enjoy longer-lasting latches.
The term double sprung tubular latch means the latch has a separate spring for the Latch-bolt (tongue) action, which allows a smooth, soft close to the door.
Door Knob Locks
Most external door handles for homes feature spring bolts, which are attached to the latch mechanism and prevent the latch from being turned when the door is locked. Because they are spring loaded, the door can be closed while the door is locked.
Rim knobs have a rose which can be removed when fitted to a rim lock or used with depending on your preference. Mortice knobs have a fixed rose which cannot be removed and only work with locks/latches which have bee morticed (fitted) into the edge of a door.
A rim lock is a surface mount lock that installs on the surface of a door and uses a latch that slides into the keeper on the door rim or frame to secure the door. Many rim locks use porcelain, brass, or other type knobs or handles to operate the latch.
Rim Dead Locks are designed to be fitted on the door and to throw a bolt to lock the door by using a key. They will only work with a key, they don't have a handle to operate them.
On modern uPVC doors, the door handles will have spring cassettes built directly into the backplate. On older doors the spring is built inside the door locking mechanism. The bad news is you can't really fix these springs.
An easy way to choose which latch you need is to measure from the edge of your door to the centre of your door Stile. Choose the Backset which is closest to this measurement, and the handle will be as central as possible to the Stile on your door.
As the name suggests the return to door brushed steel door handle lever returns almost all the way back to the door in a wide opening which has an internal lever projection and inside length that comply with BS Standard BS8300 (Disabilities Discrimination Act Compliant) while making them easy to operate for those that ...
In the United States, there are two common backsets for residential door locks: 2 3/8 inches and 2 3/4 inches. Pack your locks with a 2-3/8-inch or 2-3/4-inch latch, depending on which backset you specify. Dummy sets have no latch and are surface-mounted so you can install a dummy set wherever you choose on the door.
Although they can come in different sizes the two most common sizes in the UK for internal door latches are 63mm and 76mm. These sizes are the overall length of the latch, or the case. When measured to the spindle mechanism, the backset, then they translate as 44mm for the 65mm case and 57mm for the 76mm case.
Push the tip of a narrow-blade screwdriver or nailset into the hole. Tug on the knob and it will slide right off. Then pry off the round decorative plate, called the rose, to expose the screws that hold the lockset onto the door.
Door levers are left-handed, right-handed or universal. To determine what you need, look at the door from outside the house or room. If the hinges are on the left, look for a left-handed or universal lever. If the hinges are on the right, you need a right-handed or universal model.
But how do you know if you're getting the right size? We've researched and summed up in this post what you need to know about door knobs and their hole sizes. A standard door knob hole is 2 1/8 inches in diameter. This won't have the best fit on older doors because their holes are usually smaller.
The main types of door functions are Passage (doors that don't require locking), Privacy (a door that can be locked by a button on the inside), Dummy (has no mechanical latch and acts only as a pull), and Interior Mortise (door with an active latch with skeleton key lock).
No, door handles and knobs don't need to match throughout your house. However, it is still crucial that each door handle remains consistent with the house's overall style. Also, the handles and knobs should coordinate with the style of the doors and rooms.