Untitled record

The invention relates to a door lock, especially for only to be closed from the outside rooms, consisting of a threaded bolt, the sunk with his in a pipe section o. The like head from the outside against the door or a part attached to the door or against the Door frame or a fixed part connected to the frame rests and is screwed into a firmly connected to the door frame or with the door nut part.

The new door lock is expediently designed so that the threaded bolt is secured against being pulled out by a washer, splint or the like, which bears against the door or frame from the inside.

Further advantages and features of the invention will become apparent from the following description and the embodiments and the representation thereof in the drawings.

Fig. I illustrates in plan view and in cross section a door lock according to the invention in its arrangement in an outwardly opening door; Figure 2 illustrates in plan view and in longitudinal section a key for the door lock of FIG. Fig. 3 illustrates another embodiment of a door lock according to the invention in its arrangement in a door to be opened inwards; 4 and 5, 6 and 7 and Fig. 8 and 9 illustrate in front view and in Längsaufsicht the formation of threaded bolts for door locks according to the invention.

In the arrangement according to FIG. 1, the door opening 2o of a wall 21 can be closed by a door 22 which can be opened outwards, which is suspended by means of hinge straps 23 in anchoring anchored in the brickwork 24. On the side opposite the hinges of the door, a flat iron 25 is fixed at about half the height of the door, at its outer end lying on the edge of the door opening, an outwardly projecting short hollow cylinder 26 is attached or formed. Coaxially with this hollow cylinder 26 and with its head inside the same a threaded bolt 27 is arranged, which passes through holes of the flat iron 25 and the door 22 and protrudes with its thread 31 inwardly. The threaded bolt 27 rests against the flat iron 25 with a collar 28 and is secured against being pulled out by a washer 29 fitting against the door from the inside and a splint 30 passing through its shaft. With its thread 31, the bolt 27 can be screwed into an anchored in masonry 21 flat iron 32. The screwing and unscrewing of the bolt 27 in the flat iron 32 by means of a aufzusetzenden on the head of the bolt key. The head of the bolt consists of a directly to the collar 28 adjoining right-hand thread 33 of larger diameter and a front mounted left-hand thread 34 of smaller diameter. To screw in the bolt is the in Fig. 2 illustrated key 35 is placed with its right-hand thread part 36 on the right-hand thread 33 of the bolt head, while unscrewing the bolt of the key 35 is placed with its left-hand thread part 37 on the left-hand thread 34 of the key head.

In the embodiment of FIG. 3 is at a the door opening of a brickwork from the inside closing door 38 on the opposite side of the hinges of the door from the inside a threaded flat iron 39 is attached. In this thread, a threaded bolt 27 passing through the masonry 21 from the outside can be screwed in. The bolt 27 is in turn axially non-displaceably mounted by means of a collar 28, a washer 29 and a split pin 30 in a walled sleeve 4o and recessed with its square head 41 within a cup-shaped part 42 anchored in the masonry 21.

4 and 5 show a threaded bolt 27 for closures according to FIG. 1 or 3, whose head consists of a flattened short cylinder 43.

6 and 7 show a threaded bolt 27 for closures according to FIG. I or 3, whose enlarged diameter head 44 is formed without special collar and which has a provided with a longitudinal groove 45 longitudinal bore 46 for the use of a corresponding key.

8 and 9 illustrate a further embodiment of the bolt head to threaded bolt for closures according to the invention. In this case, the interposition of a collar 28 to the bolt 27 closely adjoining bolt head 47 is formed as an irregular polygon.