Download - Mortise Locks
Mortise Locks
Created by M.Martin 9/05
Created by M.Martin 9/05
Types - your Ref: P45 of textbook
Review parts of a mortise lock on P 46 of textbook
Installing the lock
• Hold the lock at the required height
• Mark edges of lock as a guide on face of door
• Also mark height of spindle position and keyhole if a lock set
• Use a square and bring these lines to door edge
• Continue lines around door edge to show the position for mortise
• Find centre of door edge
• Mark a central guide line down the door edge
• Width of lock can bee marked on edge from here
• You can use a combination square to gauge depth for spindle hole
• If mortise lock has a cover plate, allowance must be made for this
• Transfer measurement to door face
• Mark both sides of door
• At this stage you can also use same process to mark keyhole on face, if applicable
• Wedge bottom of door tight
• Use an auger or speed bore to drill bulk of mortise
• Ensure you keep the drill level
• Either now or on completion of mortise, drill spindle and key holes
• Drill from both sides so that you don’t split the timber on the door
• Complete mortise with a chisel
• Use appropriate sized mortise chisel for this
• A paring or firmer chisel to clean final edges
• Push lock into hole• Check if square• Check spindle and key
holes are aligned• Trace face plate with
sharp pencil
• Remove lock• Carefully chisel
correct size of plate• Remember if cover
plates are being used, this will be deeper
• Reposition lock• Face plate should be
flush with door• Or place cover plate
plate over, this being flush
• Screw into position, pilot drill holes first
• Finish lock screwed into position
Fitting The Lever Handles
• Initially position spindle through door
• Check positioning is free from obstruction
• Fit one handle on, hold in the correct position
• Use a bradawl to position screw holes
• Remove handle• Pilot hole first
• Position handle & screw in place
• Fit screws to ensure handles stay level
• Top corner, then diagonally opposite bottom corner etc
• Repeat process for other side
Fitting Striking Plate
• Close door onto jamb• Use pencil to mark top
& bottom of latch & lock on jamb
• Accuracy is very important
• Open door continue marks around onto the face of the jamb
• With door open, measure depth of latch & lock
• A combination square is good for this
• Transfer depth measurement onto face of jamb
• With vertical lines between previous marks
• Hold strike plate in position
• Mark around plate to give exact position
• Chisel out inside the latch and lock guidelines and the external guideline for the strike plate.
• Position the strike plate, drill pilot holes and then screw it in place