The window lock project was a direct consequence of the A-level Design and Technology course. A list of possible final year projects was suggested, out of which the household lock seemed to be the most exciting; especially since a situation for design presented itself within my own home.While preparing for a family holiday it was noticed how insecure a large wooden framed window was. Although shut, the window was not secure and would present no obstacle to a housebreaker. Obviously the project could be undertaken with a great deal more enthusiasm, with a real application in the home. It was now possible to set a preliminary design brief. To design a locking system to secure a large wooden-framed, hinged window. This was a rather sketchy bri...