TECHNICAL RANGE:

This invention is a device containing a locking bar which cooperates with a locking arrangement. The device is to be used for doors, stores, containers and for protection for lorry building-ups.

POSITION OF TECHNIQUE:

A lot of different devices for locking doors and simi- lar in oonneotion of a looking bar are earlier known. These generally consist of a rotating or telescoping looking bar which can be looked in sone way to a block house. The grade of security against burglary and de¬ struction of these arrangement vary wv nuch. In Sweden such burglary protecting fittings and looking arrangements are classified by the burglary protection association CSSF> and the insurance oo panies Service AB <FSAB_. Classification is devided in five steps where 5 is the highest grade of classification that can be reached. Extremely hard tests are to be per¬ formed to be able to reach class 3 why such classifi¬ cation is very rare. Host constructions of high class ashi ve, beoause of this, classification grade 4 or lower. To be able to reach this class both fitting and looking devices must resist stretching strengths of 7000 kilopond. This is to be conpared with that of the strength which all latch looks have is of the mea¬ sure 700 kilopond thus 1/10 of what is required for classification in class 4.

An ex mple of earlier known locking arrangements involving a locking bar described in Swedish patent 8301668-3. This device involves a locking bar which is removeable in a loop on one of the doors and which is removeable in the locking device on the other door The loop in the first door is anchored on the plate with bolt hole going trough for fastening in the door The bolt are thus reachable from the outside and can easely be sawn off. The locking device in the other door involves a house which is welded on a carrying plate which can be bolted in a similar way to the bottom layer. Furthermore on the house is further a proteotion welded. Ihis protection stretches itself not around the whole house and it is.only welded on the upper side. With help of tools it is therefore easely broken. The locking bar in this known device has one side open eonseq-iently it can therefore be exposed to blows or any pressure whatsoever. The latch bolt from the lockhouse can thus be blown of. Further an incon¬ venience with this device is that if this looking device involving key should break the whole looking arrangement must be discarded. The lock house is namely by different weldings not exchangeable.

Further devices for looking doors and similar is described e.g. in US patents 4,106,315, 4,905,486 and 4,548,058. Characterizing for all of them is that in spite of good production they are simple to break on account of easy reachability with tools. They also have a complicated construction and are consequently expensive in production. By eventual damage on the locking mecanism the whole device have to be thrown away as exchangeable parts do not exist.

THE TECHNICAL PROBLEM:

The purpose of this invention has been to construct a locking device which is completely guarded making it impossible to get aooess at any place with tools and break it up. Further a purpose with this invention has been that it shall be able to be adapted to dif¬ ferent types of looking mechanisms, which thus should be exchangeable. One purpose with this invention has also been to facilitate a non expensive device to produce, but in spite of this performe the necoesary strength and to be able to be classified in the highest grade 5 as above.

SOLUTION:

The technical probleme as above has been solved by this invention, by w ich one has created a device involving a locking bar whioh is fastened or turnable layered at one end or to the base and at the other end is oooperating with a locking device why the arrangement identified of that the looking bar by it's free end involves a lock shackle holder with a shackle which is inse able in the locking device and consists of a βasted or smithed strong house in one piece without other openings outwards than key hole and with one through the looking bar covered opening for reception of the locking shackle and inside the house one exchangeable look for fastening of the looking shaokle. According to the invention it is suitable that the shaokle holder inside the looking bar is length wise parted in two and holding the shackle fastened by means of that the parts are sorewed together against each other around the shackle in between.

The invention is furthermore also identified by op¬ ing pieces arranged within the house, partly to withhold pressure forces from the shackle holder partly for fastening of the lock.

According to the invention it is important that the house is applicable on a wall or similar by means of bolts or similar going through the wall or semi- lar and is oonneoted with the side of the house fa.ce- ing against the wall and is covered.

It is suitable that the bolt holes in the device are furnished with a ball on the bottom to hinder pene¬ tration with drilling tools.

DESIGN DESCRIPTION:

The invention will be described closer with reference to the drawings as follows: 1. Is showing a perspective wiew of the device in accordance with this invention, where

2. shows same device seen from the side and part¬ ly in length seotion, where

3. shows the device according to drawing no 2 shown partly in section from above and where

4. shows in section a part of the fastening arrangement to the foundation.

STATED PERFORMANCE:

On no l.the bar is described by figure no 1. This is in the presented form turnable fastened with its one end on a foundation via a middle part no 2, to whioh the bar no 1 is screwed fastened via a welded

plate no 3. Inside the bar no 1 and hardly a. drawing is a slide or shackle holder arranged. This is movable in the bar no 1 by means of a handle no 5 whioh is moving in a slit underneath the bar.The shack le holder no 4 is as shown by the drawing inserted in the house no 6 whioh by means of distance peace no 7 is screwed fastened to a different layer than the one whioh the bar no 1 is sorewed fastened on. It is ob- vios from the drawing that no opening, traces or welding are reachable on the whole device apart from the keyhole no 8 which one can not be without.

Drawing no 2 shows partly in section of the same ar¬ rangement as the one on drawing no 1, but partly in section. Thus shows that in bar no 1. which can be sqmsrt-t or have other form e.g. circular there is a slide or shaokle holder no 4 stretcing itself a suit¬ able distance into bar no 1. This slide or shackle holder no 4 is in this oase in a forward position, viz. it has been moved into lockhouse no 6. Slide no 4 is axial two parted with its outer end and the two parts can be sorewed together by means of screwes no 9 On the surfaces between these two halves tracks have been made for installment of shackle. When the two halves by means of the sorewes no 9 stretoh together against eaβh other shackle no 10 will be pressed se¬ cured between these. As in the locked position as shown on the drawing the screwes no 9 are completely hidden in partly bar no 1, partly the house no 6 and will not be reaohable from the outside it is shown among others in the drawing that the bar no 1 hardly touches house no 6 so that the slide no 4 practically is hidden and can not be influenced either by outer forces or tools.

In the house no 6 there are are a lock house no 11 arranged. This can be of different type and comple¬ tely guarded in the house no 6 and not reachable in any way but through. the keyhole no 8. This lockhouse no 11 locks the ends no 12 on the shackle. Because of that the lockhouse and the shackle holder no 4 are completely hidden no forces for parting of these

Instead of a shaokle of performance showed even o__.«• arrangements can be used e.g two pins with tracks similar to those shown on drawing 1 whioh are not connected by a bow but are looked by tracks similar to those shown at the ends of shaokle no 12 in the shaokle holder no 4. As the look no 11 is not a part of the invention this oould be of different kinds and the shackle no 10 with the ends of the shaokle no 12 can consequently be of an entirely different kind e.g. a tap or a hook or similar.

As shown on the drawing the hollownes in the house no 6 containing the lockhouse no 11 is limi ed by to stopping- pieces no 13. These stopping pieces no 13 hinder that locking house no 11 oan be drawn out at an open lock and also hinder the slide no 4 from hitting against the lock house no 11. Eventual hits against the bar no 1 in axial direction does not interfer with the lockhouse or the slide beaoause of that the slide is movable in this.

The house no 6 is provided with four bolt holes no 14 for fastening with a fundament. These bolt holes no 14 are not through going and oan only be reached from the inside of the fundament which suitably is a door or a wall. They are thus completely protected from the outside. The house no6 is othervise open against the inside against the wall which means that if the look house no 11 should start troubIcing one oan remove it and put another one in with¬ out difficulties. By having different sizes of spaces for the lock house no 11 also different sizes of locks oan be used. Drawing no 3 shows section of the same arrangement as the one according to drawing 2. The same references are ap- plyable even for this. As clearly shows the shackle hold¬ er no 4 is axially devided at its one end and has been shaped so that a upper part is dismantablc no 15 which is screwed fastened in the lower part of the shackle holder no 4. Screwes no 9 fasten this against the lower part and and press the shackle no 12 fastened between the parts in whioh tracks for this shaokle has been made. As shown quite clearly the screwes no 9 are completely covered and can not be reached from the outside.

Drawing 4 finally showes how the house no 6 is fastened at the fundament. In present case a middlepieoe no 7 has been arranged. The bolt holes no 14 are threaded and do not reach all the way to the surface. Instead at the bot- torn of the bolt hole a ball no 16 has been inserted. This ball is aimed to be a protection against drilling from outside which could be able to losen the whole package. If the drill should penetrate from outside and hit the ball it will start rotating together with the drill which consequently will not penatrate further in. For safe fastening of middle piece no 7 at the house no 6 a socket shaped extra middle piece no 17 has been arranged with a track in the middle piece no 7 and the house no 6.

Gathered from the above the arrangement consists in ac¬ cordance with presented invention of one unit which only has key hole outwards besides a lever for transportation of shackle holder. The parts are produced in single pieces without any visable and reachable welding Joints and the material has been made so thick that any serious damage of the arrangement can not be created without the help of explosives or similar. A suitable thickness of the material of the house and the locing bar is 15 mm when it consists of steel. It is in accordance with the invention suitable that the steel is hardened aocording to the method of carbon nitride.

In accordance wi h the invention presented a locking bar arrangement is created which is extremely strong fulfil¬ ling the demands of the highest security grade 5 in accordance with the above mentioned norms and is not ex¬ pensive to manufacture. It also gives possibilities to change looks in a simple way which look is not in itself needed to be of highest classification. This stimulates the economic side of the arrangement.

The invention is not limited to the form of performance shown but can be varied in different ways within the frame of the patent demands.