Half Mortise Box Locks
Quality Locks for Quality Restorations
| What you need to know about selecting and replacing half mortise locks. Finding an exact match for an old lock is not always possible, as only a limited amount of sizes are now made. |
Brass Box Locks are heavy duty, half mortise style for large chests with lift lids. Excellent quality. Each is crafted of brass in England. Use on large tool boxes and blanket chests.
When installing lock must be mortised into wood. Lock strike is attached underneath lid. When closing lid curved prongs of strike drop down into lock selvedge. Once installed the lock plate will create a smooth continuous surface on the interior of chest. Exterior of chest will only display keyhole.
The backset measurement is necessary if selecting a replacement lock:
- If you have original lock: measure distance between top edge of lock to lock pin in center of keyhole. This measurement is known as the backset.
- If original lock is not available, determine backset by measuring: distance from center of keyhole (where lock pin will be) to top edge of box.
- The replacement lock's backset measurement must match location of keyhole in furniture.