The invention relates to a lock fitting comprising two portions each being attached to those parts or objects which are to be locked, and where each por¬ tion is provided with interacting eyes through which a lock shackle can be inserted by the locking.

Lock fittings of this type are used particularly as fittings for gates or doors, swinging as well as sliding. When such building parts are in their closed position and should be locked, a padlock with lock shackle is inserted through eyes or openings provided therefor, whereafter the shackle is fixed. The parts are then locked together and cannot be opened until the shackle is released from the lock.

Hitherto known lock fittings of this type do, how¬ ever, not offer sufficient protection against attack since the construction of the lock fitting has not made sufficient allowance for this possibility. The objective of these known fittings has primarily been to hold the parts together by means of a lock.

It has turned out, however, that it is comparatively easy to force open these known locking devices, for instance by means of an oblong object which can function as a crowbar. In certain cases the fitting has even facilitated this by forming a support for the crowbar and thus made the attack easier.

A lock fitting is known from the specification of GB

patent application no. 2,108,568 where such a con¬ struction of the portions has been aimed at that the upper part of the padlock, i.e. the shackle and the upper face of the lock are covered and thus protected from attack from crowbars and similar tilting or rocking tools. Although the fitting offers a certain protection against for instance shock impacts and be¬ ing attacked by means of a crowbar, it does not provide sufficient protection in order that the lock fitting can be referred to as being safe. This is due to the fact that the portions of the fitting are si¬ tuated at such interdistances that a padlock shackle can be inserted when the fitting is joined. The dis¬ tance between the eye part and the one side wall of the casing is comparatively large in order that the lock can be fitted, but at the same time it provides a passage for- the insertion of a crowbar or the like.

Hence, the side wall facilitates the attack since it forms a support for the crowbar when the end of this rests on the lock casing which makes an attack con¬ siderably easier. Moreover, this fitting will easily damage the lock casing and thus the lock cylinder since the lower part of the lock lies unprotected.

It is the object of the invention to overcome these drawbacks of the known fittings.and thereby obtain a safer equipment for locking together two objects, and this is obtained by a fitting where the two portions are further provided with a protecting shield which in the locked position of the fitting surrounds the shackle and covers the lock.

By means of this fitting, which is particularly suit¬ ed for use in connection with a padlock with annular

shackle, the shackle as well as the lock casing will be so completely surrounded and protected that no rod-shaped object can be inserted; consequently, no such force can be produced as would be sufficient for breaking open the fitting or lock. The highest possible degree of protection of the lock is hereby obtained resulting in greater impregnability without the lock fitting becoming more expensive or taking up more room.

If, as presented in claim 2, the protecting shield is constructed of parts each being attached to each of the two portions and forming a closed shield when the two portions are joined, optimum strength of the shield is obtained since the adhesion to the fixing plate of the fitting will be at a maximum.

B ^• dividing the one side wall of the shield into two parts each being attached to its part, as presented in claim 3, the lower part of the shield reaches the highest degree of strength.

If the shield is open to the rear, as presented in claim 4, a padlock with annular shackle can be in-, serted below the shield and lie completely protected.

Finally, it is expedient, as presented in claim 5, to be able to fit a built-in lock in the lock • fitting since this provides a compact and reliable lock to be fitted onto doors, gates and the like.

In the following the invention will be explained in closer detail with reference to the drawing, in which

Fig. 1 is a perspective view of the two separate portions,

Fig. 2 shows the portions locked together,

Fig. 3 shows a second embodiment of the two separate portions,

Fig. 4 shows the portions according to this embo- diment locked together,

Fig. 5 shows a third embodiment of the two separate portions, and

Fig. 6 shows the portions according to this embo¬ diment locked together.

The drawing shows some advantageous embodiments of the lock fitting which provides the best possible protection of the lock and shackle.

This protection is obtained, as will be explained in the following, because the fitting in its locked po¬ sition forms a housing or shield behind which the lock is protected so that it cannot be attacked by means of ordinary burglars' tools.

Fig. 1 shows a first embodiment which is suited for being fitted onto both swinging and sliding objects. The fitting is made of steel and in the shown example meant for being bolted to the object.

The one portion 1 of the fitting is provided with holes 2 for bolts or the like, and moreover the

shield 3 is welded onto it, said shield comprising a surface, a side and the front plate, and the lower part 9 of the side facing the interacting part 6. An opening 4 is hereby formed into which the interacting second fitting portion 6 can be inserted.

Onto the portion 6 is welded a protruding U-shaped part 7 whose one part 8 will fill in the hole 4 exactly and form a closed shroud or shield for the lock 11 when the fitting is assembled, as shown in fig. 2.

The other U-shaped part of the portion 6 is provided with through-holes 10, as is an interacting opposite part under the shield 3 of the other portion 1, through which a shackle 12 can be inserted in order that the portions are locked together.

In the shown example the padlock is disc-shaped and has an annular lock shackle in that this lock type combined with the fitting provides the highest degree of impregnability. The lock cylinder 13 is operated by means of a key, and an opening 5 is therefore made in the bottom side of the shield 3 for the insertion of said key. This lock cannot be attacked in any way, and the lock offers a perfect protection against attacks coming from without because the lock casing 11 fills in the space behind the shield completely.

Figs. 3 and 4 show a second embodiment of a fitting which is particularly suitable in connection with the previously mentioned disc-shaped lock 11. The one portion 14 of the fitting is provided with a shield 15 which is completely closed except at one side.

Moreover, there is an opening 21 in the fixing plate through which the lock 11 can be inserted before the fitting is fitted. In order to operate the lock an opening 16 is made in the shield 15 for insertion of a key.

The interacting lock portion 19 is thicker at the end due to plate elements 20 whose one element is extend¬ ed for the formation of a shackle or an eye 17 which can be inserted sideways into the shield 15. Inside the shield the shackle 17 protrudes inwards between two projecting flaps on which the shackle can rest once it has been inserted through the eye in the shackle 17.

Furthermore, the outer edge of the fixing plate is folded for the formation of a flap 18 which covers the side of the shield completely when the fitting is assembled.

This fitting almost serves as a fitting with attached lock but it makes replacement of the lock 11 by dis¬ assembly of the one fitting portion 14 possible. Moreover, this fitting is completely closed and hence impregnable and very reliable.

Finally, a third embodiment is shown in figs. 5 and 6 where the lock is provided with an attached built-in lock.

Corresponding to the second embodiment shown in figs. 3 and 4 the shield 24 is closed except at one side.

Underneath the shield 24 a toothed rim 30 is rota-

tably attached on the fixing plate 22, which toothed rim 30 can be operated by a key in a lock cylinder 13, 31. Access to the lock is obtained through an opening 25 in the shield as shown in fig. 5.

The toothed rim 30 is in mesh with an adjacent tooth¬ ed rim 29 which is also rotatably attached to the plate and which moreover serves as a shackle 28.

The interacting fitting portion 23 is, as is the case with the second embodiment, provided with an eye or a shackle 26 formed by the folded plate 27 which is attached to the fixing plate of the fitting in order to create a thicker part at this end of the fitting.

When the portions are assembled and the shackle is turned through the eye, the shackle 28 will rest on two flaps projecting from the fixing plate and being placed on both sides of the shackle 26, as shown in fig. 6.

This fitting is also closed and surrounds the lock completely for ensuring optimum resistance to attacks.