GB2051940A

GB2051940A - Locking Device

Info

Publication number: GB2051940A
Application number: GB8009875A
Authority: GB
Original assignee: Individual
Current assignee: Individual
Priority date: 1979-06-26
Filing date: 1980-03-24
Publication date: 1981-01-21
Also published as: IL57663A0; GB2051940B; IT8021306A0; IL57663A; DE8009495U1; IT1194642B

Abstract

A locking device comprising a metal body 1 accommodating a key- operable tumbler-type locking cylinder 2 which actuates a locking member to move the latter transversely into and out of a bore 4 in the body to effect respectively locking and unlocking of a headed bolt 5 when the latter is inserted in said bore. The headed bolt replaces the usual shalce of a conventional padlock and is provided adjacent its free end remote from the head with an appropriate aperture e.g. a nick or a recess 5a, engageable and disengageable by the locking member as the latter effects locking and unlocking respectively. <IMAGE>

Description

SPECIFICATION Locking Device The present invention relates to a locking device which can be used in the same manner, for the same purpose as and in lieu of an ordinary padlock.

The conventional padlocks comprise a casing in which the locking mechanism is contained and which at its front or bottom side has a keyhole. At the top side of the casing is releasably attached a shackle or bow which enters the casing and which can be immobolized, i.e. locked by means of the key. There are also padlocks where the locking is effected by simply urging the bow inwardly the casing until it is springily engaged by a member which is part of the locking mechanism. Opening of the lock can be brought about only by use of the key.

It is a serious disadvantage of the conventional padlocks that they are highly vulnerable to having their locking mechanism and/or the shackles destroyed, thus rendering the lock ineffective.

In use the bow or shackle is passed through a staple or the links of a chain. Burgulars or others seeking unauthorised entrance to premises locked in that manner or seeking access to a box or the like secured by a padlock can pass a steel bar through the bow or shackle and using it like a crow bar tear the shackle from arrangement with the locking mechanism. Where this manipulation proves to be of no avail, due to strength of the lock, the bow can be cut or sawn through, which obviously takes time, but is not an impossible task.

It is the object of the present invention to provide a lock which does away with most of the disadvantages of the conventional padlock.

According to the invention, there is privided a locking device which consists of a solid metal body in which a cavity accomodating a locking cylinder is provided, the said body having an inlet into which a headed bolt can be inserted, such bolt having at its free end a nick or recess which is adapted to receive a member actuated by the cylinder and so immobilising the bolt within the said metal body.

In use the said bolt is passed through the respective devices which are to be safe-guarded, is inserted into the body of the new lock and is immobilized therein by having the locking member extending from the cylinder engage the bolt at the said recess or nicic which is attained by a turn of the key in the cylinder.

The invention will now be described with reference to the accompanying drawings.

In the drawings Fig. 1 is a perspective view of a lock according to the inven. Fig. 1 a shows the bolt.

Figs. 2 and 3 illustrate examples of use of the new lock.

The lock comprises a solid metal body 1 in which is seated the cylinder 2 of conventional construction and which can be actuated by the insertion of a key in the keyhole 3. In angular relation to the axis of the cylinder is drilled a bore 4 into the body 1. The bore reaches down to the range of cylinder 2.

As can be seen in Fig. 1 a, the bolt, indicated as a whole by the numeral 5, has a shank 5a and a head Sb. Near the end of shank 5a a nick or recess Sc is cut into the shank.

As has been stated, in use the bolt 5 is inserted into bore 4 and the locking member is made to enter recess Sc so that the bolt cannot be withdrawn, unless-by use of the key-the locking member is retracted.

The following examples will further illustrate the use of the new lock. As shown in Fig. 2, the two wings of a gate 10 and 11 have attached to each of them angles 12, 13, in one flange of each of which registering holes are made. Thus these angles can serve as staples and the bolt is passed therethrough. Now the lock body 1 can be set on the bolt 5 and secured thereto in the manner described.

It will be understood that bolts of different lengths can be used, so e.g. in the case shown in Fig. 2, the head 5b of the bolt lies close to the angle 12 and the lock body 1 close to the angle 1 3. Thus the bolt would be almost inaccessible to whatever tool seeking to withdraw it forcibly from body 1. The body 1 being a solid piece of metal cannot be easily destroyed to make the cylinder accessible. In case a gap 14 is left between angles 12, 13, a washer 1 5 can be inserted preventing acess to the bolt.

Another example is shown in Fig. 3: here the bolt is set fixedly in a wall, say embedded in concrete. This arrangement may serve e.g. for passing the link or links of a chain slung about or passed through an object over the bolt 5 and securing it by placing a lock. body on the bolt. By these means, say a bicycle, could be chained to a wall.

In some cases objects are secured to a support by being held on a pin. To prevent the removal of such an object, it is customary to have the end of the pin pierced across so that the shackle of a padlock can be passed therethrough. Of course, the padlock has to have a rather weak shackle, since the thickness of the pin is limited. Now in lieu of that pin, the bolt 5 can serve. So, for instance the spare wheel of a car may be secured in this manner, the lock body slipped on the bolt on top of the wheei.

As has been stated, for different purposes, bolts of different lengths can be used. Adjustment can be attained by placing one or two metal washers on the bolt.

Claims

1. A locking device comprising of a metal body in which a cavity accomodating a locking cylinder is provided, the said body having an inlet into which a headed bolt can be inserted, such bolt having at its free end a nick or recess which is adapted to receive a member actuated by the cylinder.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Locking Device The present invention relates to a locking device which can be used in the same manner, for the same purpose as and in lieu of an ordinary padlock. The conventional padlocks comprise a casing in which the locking mechanism is contained and which at its front or bottom side has a keyhole. At the top side of the casing is releasably attached a shackle or bow which enters the casing and which can be immobolized, i.e. locked by means of the key. There are also padlocks where the locking is effected by simply urging the bow inwardly the casing until it is springily engaged by a member which is part of the locking mechanism. Opening of the lock can be brought about only by use of the key. It is a serious disadvantage of the conventional padlocks that they are highly vulnerable to having their locking mechanism and/or the shackles destroyed, thus rendering the lock ineffective. In use the bow or shackle is passed through a staple or the links of a chain. Burgulars or others seeking unauthorised entrance to premises locked in that manner or seeking access to a box or the like secured by a padlock can pass a steel bar through the bow or shackle and using it like a crow bar tear the shackle from arrangement with the locking mechanism. Where this manipulation proves to be of no avail, due to strength of the lock, the bow can be cut or sawn through, which obviously takes time, but is not an impossible task. It is the object of the present invention to provide a lock which does away with most of the disadvantages of the conventional padlock. According to the invention, there is privided a locking device which consists of a solid metal body in which a cavity accomodating a locking cylinder is provided, the said body having an inlet into which a headed bolt can be inserted, such bolt having at its free end a nick or recess which is adapted to receive a member actuated by the cylinder and so immobilising the bolt within the said metal body. In use the said bolt is passed through the respective devices which are to be safe-guarded, is inserted into the body of the new lock and is immobilized therein by having the locking member extending from the cylinder engage the bolt at the said recess or nicic which is attained by a turn of the key in the cylinder. The invention will now be described with reference to the accompanying drawings. In the drawings Fig. 1 is a perspective view of a lock according to the inven. Fig. 1 a shows the bolt. Figs. 2 and 3 illustrate examples of use of the new lock. The lock comprises a solid metal body 1 in which is seated the cylinder 2 of conventional construction and which can be actuated by the insertion of a key in the keyhole 3. In angular relation to the axis of the cylinder is drilled a bore 4 into the body 1. The bore reaches down to the range of cylinder 2. As can be seen in Fig. 1 a, the bolt, indicated as a whole by the numeral 5, has a shank 5a and a head Sb. Near the end of shank 5a a nick or recess Sc is cut into the shank. As has been stated, in use the bolt 5 is inserted into bore 4 and the locking member is made to enter recess Sc so that the bolt cannot be withdrawn, unless-by use of the key-the locking member is retracted. The following examples will further illustrate the use of the new lock. As shown in Fig. 2, the two wings of a gate 10 and 11 have attached to each of them angles 12, 13, in one flange of each of which registering holes are made. Thus these angles can serve as staples and the bolt is passed therethrough. Now the lock body 1 can be set on the bolt 5 and secured thereto in the manner described. It will be understood that bolts of different lengths can be used, so e.g. in the case shown in Fig. 2, the head 5b of the bolt lies close to the angle 12 and the lock body 1 close to the angle 1 3. Thus the bolt would be almost inaccessible to whatever tool seeking to withdraw it forcibly from body 1. The body 1 being a solid piece of metal cannot be easily destroyed to make the cylinder accessible. In case a gap 14 is left between angles 12, 13, a washer 1 5 can be inserted preventing acess to the bolt. Another example is shown in Fig. 3: here the bolt is set fixedly in a wall, say embedded in concrete. This arrangement may serve e.g. for passing the link or links of a chain slung about or passed through an object over the bolt 5 and securing it by placing a lock. body on the bolt. By these means, say a bicycle, could be chained to a wall. In some cases objects are secured to a support by being held on a pin. To prevent the removal of such an object, it is customary to have the end of the pin pierced across so that the shackle of a padlock can be passed therethrough. Of course, the padlock has to have a rather weak shackle, since the thickness of the pin is limited. Now in lieu of that pin, the bolt 5 can serve. So, for instance the spare wheel of a car may be secured in this manner, the lock body slipped on the bolt on top of the wheei. As has been stated, for different purposes, bolts of different lengths can be used. Adjustment can be attained by placing one or two metal washers on the bolt. Claims

2. A locking device comprising a metal body having a generally cylindrical cavity and a bore directed inwardly of the body, and a locking cylinder accomodated within said cavity and having a locking member movable into and out of said bore transversely of the bore axis to effect respectively locking and unlocking of a headed bolt (when the latter is inserted in said bore) by respectively engaging and disengaging an appropriate aperture in said headed bolt.

3. A locking device according to Claim 2, wherein said locking cylinder is key-operable and tumbler-actuated.

4. A locking device according to Claim 2 or Claim 3, wherein said aperture in said bolt is disposed adjacent the free end of the bolt remote from the head.

5. A locking device according to any one of Claims 2 to 4, wherein said aperture is provided by a nick or recess.

6. A locking device substantially as herein described with reference to and/or as illustrated in the accompanying drawing.

6. A locking device according to any one of Claims 2 to 5, wherein said bore and bolt are each of circular cross-section, the bolt being a tight sliding fit into said bore.

7. A locking device substantially as herein described with reference to and/or as illustrated in the accompanying drawings.

New claims or ammendments to claims filed on 12 August 1980 New or Amended Claims:

1. A locking device comprising a metal body having a cavity therein in which a locking cylinder is accomodated and further having an inlet for locking purposes, said inlet being dimensioned in accordance with the dimensions of a headed bolt onto which said device is to be locked by insertion of the bolt's shank into said inlet, the shank having a nick or recess to receive a cylinderactuated member and being dimensioned such that in use it is substantially wholly unexposed thereby to restrict the access thereto of a lock breaking tool.

2. A locking device according to Claim 1, wherein no more than one single inlet for locking purposes is provided.

3. A locking device according to Claim 1 or Claim 2, wherein said nick or recess is disposed adjacent the free end of the shank remote from the head.

4. A locking device according to any preceding Claim, wherein said inlet is the mouth of a bore, the bore and the bolt's shank are each of uniform circular cross-section, and the bolt is a tight sliding fit into said bore.

5. A locking device according to any preceding Claim, wherein said locking cylinder is keyoperable and tumbler-actuated.