Door Locks Knobset Type With Rims

Product Description

Rim knobset door locks are the hardware upgrade your period property or interior door needs. This lock solves mortice locks requiring deep door cuts, modern locksets clashing with vintage aesthetics, and complex mechanisms failing with wear. It delivers surface-mounted, mechanically elegant, time-tested security.

Door Locks Knobset Type
With Rims

Core Architecture

The surface-mounted lock case contains a spring-loaded bolt, a rotary spindle projecting through the door, and a pair of knobs secured to either end of the spindle. The bolt is biased to the extended locked position and retracts when either knob is turned. The rim lock body mounts directly onto the door surface, while the keeper mounts to the door frame.

Door Locks Knobset Type
With Rims

Knobset Configuration

The lock is operated by round knobs rather than levers or handles. This classic Victorian-era design typically features solid brass or porcelain knobs on decorative roses. The spindle passes through the door and connects both knobs. Many sets include a key-operated deadbolt mechanism for locking from one side with a skeleton key. This provides two layers of security: latch for convenience and deadbolt for when you leave.

Technical Specifications

Various spindle lengths accommodate different door thicknesses. The mounting mechanism includes a tubular member extending through the door with an adjustable nut and rosette on the opposite side to clamp the assembly securely. Knob projection is typically around 70mm. The backset is commonly 3-7/8 inches for standard applications.

Door Locks Knobset Type
With Rims

Materials and Finishes

Lock cases are constructed from solid brass, cast iron, or steel with internal components made from brass or non-corrosive metals. Finish options include polished brass, oil-rubbed bronze, antique brass, and black. Porcelain knobs offer a hard, non-porous surface that resists wear. Brass knobs provide a uniform metallic aesthetic.

Installation and Usability

The surface-mounted design requires only a hole for the spindle and keyway plus screw holes for the lock body and keeper. No deep mortising is required, preserving the integrity of the door structure. The lock is fully reversible for either left-handed or right-handed doors by flipping the latch mechanism. Ideal for bedroom doors, bathroom doors, closet doors, and older properties where door thickness does not accommodate mortice locks.

Door Locks Knobset Type
With Rims

Durability and Maintenance

Occasional lubrication of the bolt mechanism is all that is required. Replacement parts are readily available. The mechanical system has no electronic components, no batteries, and no firmware updates required.

Door Locks Knobset Type
With Rims

Applications

Suitable for period property restorers, homeowners wanting vintage aesthetics, and renovators dealing with doors too thin for mortice locks. Order today and deploy immediately with zero configuration.

Door Locks Knobset Type
With Rims