DE264508C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

- JVi 264508 CLASS 68 Ö. GROUP

WILHELM RÜCKERT in HANNOVER-WÜLFEL

Automatic door lock that can be opened from the outside.

Patented in the German Empire on February 10, 1912.

The invention relates to an automatic door lock that can be opened from the outside, in which a locking hook when closing the door by one on the door leaf attached pin is tilted and engages with this.

Türverricgler are known in which horizontally mounted, slotted wings when closing the door through a to the latter

it> tipped the attached T-piece is going to couple. Such devices cannot, however, from the outside be opened. Furthermore, both hands are required to open from the inside, since at the same time when turning the rocker into the open position, the door is opened by the lever handle must become. These disadvantages are avoided in the subject matter of the invention. The subject of the invention related locking hooks

so is provided with an elongated eye. This stored with play in a cramp. The locking hook is in the open position of the device folded up and rests in a slot which is formed from two angled projections which, like the staple, are connected to the bolt of the snap lock attached to the door post. The end of the bolt is secured in its locked position by two springs and can be used together with the locking hook located on it can be removed after triggering by means of a key. An embodiment of the invention is shown in the drawing:

Fig. Ι is a front view of the device in the open position,

Fig. 2 is a side view, also in the open position. Make the dash-dotted lines the locking hook in the locked position.

Fig. 3 shows the arrangement seen from above.

The lock a is attached to the door post in such a way that the two upper screws are covered by the lock bolt f . The locking hook c is provided with an elongated eye c ¹ , which is mounted with play in the clamp g. The locking hook is folded up in the open position and then rests in the slot m, which is formed by two angled projections i and i ¹ which, like the cramp g, are connected to the bolt part p located on the door post and stored in the snap lock α . On the movable door leaf, the pin f provided with the screw-on plate b is attached so that when the door is closed it ^{causes the locking hook c to tip over by hitting its part c 2} and is coupled to it (FIG. 2, dotted line). When the door is now opened, the pin f is advanced to the end point of the slot r . So it is only possible to partially open the door. The lock can be disengaged from the inside by folding up the locking hook c .

It can only be opened from the outside with a key that matches the lock. The door is then opened as far as the lock allows. Through the crack in the door the key is then passed through and the something beyond the lock

protruding thorn h inserted. The lock bolt is offset at this point (Fig. 2), which leaves a cavity ο free in which the key can be turned to the left as far as it will go. As a result, the snap springs η and n ¹ are pressed to the side and release the lock bolt or its lugs k and Ä ¹ , so that the same can be lifted out together with the locking hook c attached to it. After entry has taken place, the locking hook c is reinserted into the lock housing and the key is removed. The snap springs secure the lock bolt again in its locked position.

The keyhole cannot be seen from the outside and is therefore very difficult to open with a duplicate key if it does not fit exactly. The locking hook can also be turned sideways, whereby the automatic locking device can be deactivated and the door can be locked. In the first case, a nail or screw to hold the locking hook c is attached to the door post at the level of the staple g; in the other case a bridge is attached at b ^{1 of} the screw-on plate b , which must be correspondingly wide so that the locking hook can find space behind it. In addition, in order to prevent the door from being opened from the outside when someone is in the room, it is possible to attach a bolt to the lower part of the locking hook c.

Claims (1)

Patent claim: Automatic door lock set up for opening from the outside, in which a locking hook is caused to tilt when the door is closed by a pin attached to the door leaf and is coupled to it, characterized in that the locking hook (c) by means of an elongated eye (c ¹ ) with play in a clamp (g) and guide between two angled projections (i, i *) , which, like the clamp (g) , are connected to a bolt (ft) mounted in the door leaf and secured in its position by a snap lock are, the bolt (j>) after releasing the snap lock using a key from the outside together with the locking hook can be removed. 1 sheet of drawings.