Abstract: In a door lock with two case parts disposed in parallel opposed relationship the follower designed as an injection molded synthetic resin part is resilient in itself owing to a supported follower portion, the spring for the spring bolt and for the tumbler being formed by a base structure (42, 42a) and the support for a fitting to be mounted later on being offered by sleeves (14, 15) which are provided above and below the follower both at the lock case bottom and at the inside of the lock cover.The spring-like action of the follower is achieved in that the bent follower leg (26) slidingly bears against an inclined supporting surface of an abutment (27) while curving inwardly or outwardly upon radial movement of the follower.Good fit of the lock in the pocket provided in the door is achieved by ribs (11, 12, 13) on the outer surfaces of the lock case.

Abstract: In a door lock with spring bolt and dead bolt the lock follower body injection molded from thermoplastic synthetic resin is rotatably mounted in the lock case and resilient in itself without bias and without being influenced by any spring force when by radial movement of the lock follower body a plurality of legs extending therefrom bears against retaining pins and develops spring action by bending.The required spring load on the tumbler is effected by the provision of a free leg at the tumbler which rests unbiased against a stop pin and resiliently bends upon actuation by the key. The mounting of a door fitting at the door panel is facilitated by bores through sleeves provided in the lock case.The inexpensive fabrication permitting at the same time a maximum possible degree of dimensional precision is achieved by making both the lock case and the interior parts from thermoplastic synthetic resin containing no plasticizer. Preferably a polyacetal is used for the interior parts.