1. Mortise Locks Created by M.Martin 9/05

2. Types - your Ref: P45 of textbook

3. Review parts of a mortise lock on P 46 of textbook

4. Installing the lock

5. 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

6. Use a square and bring these lines to door edge • Continue lines around door edge to show the position for mortise

7. Find centre of door edge • Mark a central guide line down the door edge • Width of lock can bee marked on edge from here

8. 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

9. 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

10. Wedge bottom of door tight • Use an auger or speed bore to drill bulk of mortise • Ensure you keep the drill level

11. 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

12. Complete mortise with a chisel • Use appropriate sized mortise chisel for this • A paring or firmer chisel to clean final edges

13. Push lock into hole • Check if square • Check spindle and key holes are aligned • Trace face plate with sharp pencil

14. Remove lock • Carefully chisel correct size of plate • Remember if cover plates are being used, this will be deeper

15. 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

16. Finish lock screwed into position

17. Fitting The Lever Handles

18. Initially position spindle through door • Check positioning is free from obstruction

19. Fit one handle on, hold in the correct position • Use a bradawl to position screw holes

20. Remove handle • Pilot hole first

21. 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

22. Fitting Striking Plate

23. Close door onto jamb • Use pencil to mark top & bottom of latch & lock on jamb • Accuracy is very important

24. Open door continue marks around onto the face of the jamb

25. With door open, measure depth of latch & lock • A combination square is good for this

26. Transfer depth measurement onto face of jamb • With vertical lines between previous marks

27. Hold strike plate in position • Mark around plate to give exact position

28. 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