Door lock and fittings combined in one unit - requires only one lock to be stocked for any type of door

摘要

Door-lock combined with corresponding door fittings, having a variety of uses. It consists of a key-operated tumbler with a channel into which one can insert not only all the keys belonging to the same family of keys with different bits but also a pin intended to cooperate with the tumbler. One end of this pin could be fixed to a revolving pin thus making a door-bolt. An indicator could also be fastened to the other end of the pin making it suitable for use on a bathroom or WC door. As this lock is adaptable to any type of door, the need to keep a stock of several different types of lock could be avoided.