DE71915C - Rescue device with a rescue ladder that unwinds automatically when a fire breaks out - Google Patents

Description

IMPERIAL

PATENT OFFICE

CLASS 61: Rescue Services.

Rescue ladder.

The subject of the present invention is a fire outbreak in buildings self-acting rescue apparatus, which the residents of the various floors, as well as the rescue team a quick and comfortable departure or Climbing on the rescue ladders is permitted, at the same time as the outbreak of the fire by means of an electric bell device is shown.

In the accompanying drawings the rescue apparatus is illustrated, namely represents

Fig. Ι the rescue ladder in the rolled-up state in a side view;

Fig. 2 and 3 show the lever arrangement which causes the ladder to fall, in side and top view;

Fig. 4 shows the rescue ladder together with the device for triggering the same in a side view ;

Fig. 5 shows the device for holding the rescue ladder, as well as the release device for releasing a second ladder in the side view;

Fig. 6 illustrates the same device in front view;

Figure 7 is a top view of Figure 3;

8 and 9 show the arrangement for actuating the rescue apparatus.

The composition and mode of operation of the device is as follows:

Above each row of vertically stacked windows in the building is a Roof space one rescue ladder / attached to a winch drum C, Fig. 1, which, when a fire breaks out, automatically falls down in the following manner is brought.

Cords t, FIG. 8, run along the partition walls inside the building, which are torn apart when a fire breaks out by means of interposed detonators or simply by burning. As a result of this, the weights m attached to the cords fall down and thereby actuate a cutting device s which in turn cuts through other cords h, Fig. 9, and the weights y hanging on them through shafts F, which go through the entire height of the building, drops onto a lower plate G (Fig. 9). The consequence of this is that by means of cords r, Fig. 9, which run from the plate G to the winch device set up in the roof space, a lever b, Fig. 3, rotatable about H , is set in motion, which serves the following purposes. By moving the nose f to the left, the lever g is brought into the dotted position and causes the spring h to strike against the pin h ¹ , whereby an electrical contact is established with the lever i to operate an alarm device. At the same time, the rod E shown in FIGS. 4, 5 and 7, influenced by spiral springs, is pressed to the left by engagement of a pin in the notch a ^{l of} the lever b ^{, whereby lever if 1} with its nose η under the spring / ² , Fig. 1, slides away and

causes the flap B to fall and thus releases the ladder /.

In order to effect a fast and safe unwinding of the latter from the drum C, on the one hand the lowest rung of the same is weighted, on the other hand thin wire ropes which are attached to the end of the ladder can always pull the ladder to the device by any suitable device exercise to tension the same. If the ladder falls down by opening the flap B , it is clamped between the two posts 0, which are held by struts b \ Fig. 5, and the brackets g ¹ , while the ladder is tensioned at the same time. To hold the latter in place, a lever-like attached weight d is thrown over the lower rung. A step f ¹ , Fig. 5, allows easy access to the ladder. Due to the weight of the falling ladder, a lever c rotatable about r \ Fig. 5 is simultaneously pressed to the right and thereby a hook k ¹ holding the ^{ladder Z 1} fastened with hinges on the lower side of the balcony is released. When the ladder falls, a flap q attached to a cord or chain is opened at the same time.

In this way it is made possible that a convenient access from the outside to the Windows and thus to the interior of the building can take place.

Claims (1)

Patent claims: ■ Rescue device, characterized in that strings t and h loaded with weights are arranged within the room, which when a fire breaks out or which is burned through by this itself. are cut through, whereby the so loosened weights y fall on a plate G and cause a rope ladder located above the cornice, rolled up on a drum C, under a pull downwards, to fall down.
In the device identified under 1. an arrangement for securing and tensioning the fallen ladder, characterized by a clamping device by which the lowest rung of the ladder is held between the post 0 and bracket g ^l , while a lever-like arranged weight d by thinking about the lowest rung a detachment; the ladder prevents. ; In connection with the arrangement marked under 2. an automatic release device of a second ladder I ^{1 in} such a way that when the ladder falls / a hook k ^{l is} under a lever action, a ladder l ^{l is released} , which in turn opens a flap q when it falls. 1 sheet of drawings.