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Mortise Locks. 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
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Mortise Locks Created by M.Martin 9/05
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
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
Close door onto jamb • Use pencil to mark top & bottom of latch & lock on jamb • Accuracy is very important
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