
Lockouts · Hamilton
Seized & Jammed Lock Opening
The shop's lever handle goes down as usual, but the latch inside the mortise case never pulls back. Staff are waiting on the sidewalk with their coffees, the door is locked, and the handle is simply moving air.
Seized & Jammed Lock Opening
In plain words
Many jammed locks are not lock problems at all. Wood doors swell in humid weather and shrink in dry winter air, hinges loosen and let the door drop, and a strike plate that was fine in spring is a few millimetres out by autumn. When that happens the bolt is squeezed in its pocket and the key cannot move it. The locksmith checks this first by loading the door in different directions while working the key, and by comparing how the lock behaves with the door open. If the door is the cause, the opening is gentle and the lasting fix is a hinge, strike or seal adjustment.
How the visit goesThe key turns a full circle without any resistance and the deadbolt stays exactly where it is. There is no click, nothing moves behind the face of the lock, and the door is as closed as it was before you touched it.
Hamilton
How the visit goes
Loading the door while the key is worked
With the lock family narrowed, the locksmith puts a hand on the door. Pushing it into the frame, pulling it out, and lifting on the handle each change how a bound bolt sits in its pocket, and the key is tried gently in each position. If the key frees up under one of those loads, the door is the cause. Where a second entrance is open, the same lock family is compared with the door swung wide, since a bolt that throws smoothly in mid-air and binds when closed has been pinched by the frame. Nothing is forced during this test; it is a diagnosis, not an attempt.
Inside a mortise case or lever set
For mortise locks and lever hardware the work moves from the cylinder to the case. The locksmith gets the door open, then removes the trim and draws the case out of the door edge. Inside, a broken lever return spring, a worn hub, a bent spindle or a latch that has lost its spring is replaced with the matching part, and years of dust and hardened grease are cleaned from the contact surfaces before a fresh application of a grease suited to lock mechanisms. The case is reassembled, the spindle and cylinder are refitted, and lever, key and thumb-turn are each tested so the latch and bolt travel fully.
For a business: a door the staff can rely on
On a commercial door the handover includes the people who use it. Whoever opens in the morning is shown how the lever, key and cylinder now behave, and the exit side is demonstrated so everyone knows the door opens from inside with one motion. If the mortise case was serviced, the parts that were replaced are named so a future locksmith knows what is in there. A note of which keys were tested and who holds them supports whatever key control the business runs. Spare keys are checked in the lock before they go back in the safe.
Seized & Jammed Lock Opening
In the van
- Mortise case spring and hub
- Electronic contact cleaner
- Lock de-icer
- Strike plate and hinge shims
- Cylinder springs, pins and cap
What affects the quote
Same fees day, night or weekend
1Mortise and commercial hardware
Drawing a mortise case, replacing a hub or spring and regreasing the contact points is more involved than a cylinder service, and storefront and exit hardware are quoted accordingly.
2Small parts behind the cylinder
Tailpieces, cams, springs, cylinder caps and pins are minor items, but each one used is named on the quote so you can see what went into the lock.
3Keying a new cylinder to your existing key
Pinning a replacement cylinder to the key already on your ring, or rekeying other doors to match a new key, is extra work per cylinder and simplest to do in the same visit.
Seized & Jammed Lock Opening: questions
Why does the lock only stick when the door is closed?
Because with the door open the bolt is throwing into thin air, and with the door closed it is throwing into a pocket that has moved. A door that has dropped on its hinges, swollen with humidity or been pushed out by thick weatherstripping lands the bolt against the edge of the strike plate instead of through the hole. A chalk mark on the bolt shows exactly where it hits, and the fix is on the frame, not in the cylinder.
If the cylinder is replaced, can it be keyed to my existing key?
Often, yes. A replacement cylinder in the same keyway can be pinned to the cuts on the key already on your ring, so the front and back doors stay on one key and nothing else in the house changes. If the old keyway is no longer made or the key is badly worn, the new cylinder comes with fresh keys and the other doors can be rekeyed to match in the same visit.
My key turns all the way round but the bolt stays put. What has broken?
The key and cylinder are doing their job; the bar behind the cylinder that drives the bolt, called the tailpiece or cam, has broken, slipped or twisted out of engagement. It is a small part. The locksmith retracts the bolt through the mechanism or removes the cylinder to reach it, then fits a tailpiece of the right length and profile. Your cylinder and keys are unchanged afterwards.
Lockout Services

- Business Lockout ServiceMinus eighteen with a wind, and the exterior cylinder on the shop door has frozen solid overnight…
- Broken Key ExtractionOvernight the deadbolt froze, and this morning the key would only turn partway.
- Break-In Damage Lock RepairSomeone smashed the little window beside the door, reached in and turned the thumb-turn.
Seized & Jammed Lock Opening near you
Think of this as the workshop list for Hamilton. Emergency lockouts and key extraction. Rekeying after a move or a staff change. Lock replacement and deadbolt installation. High-security cylinders and reinforced strikes. Commercial hardware, closers and master keys. Safe opening and service. Key cutting for house and car.