GB2280929A - Security shroud arrangement for a padlock - Google Patents
Security shroud arrangement for a padlock Download PDFInfo
- Publication number
- GB2280929A GB2280929A GB9316604A GB9316604A GB2280929A GB 2280929 A GB2280929 A GB 2280929A GB 9316604 A GB9316604 A GB 9316604A GB 9316604 A GB9316604 A GB 9316604A GB 2280929 A GB2280929 A GB 2280929A
- Authority
- GB
- United Kingdom
- Prior art keywords
- padlock
- security
- staple
- shackle plate
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B67/00—Padlocks; Details thereof
- E05B67/38—Auxiliary or protective devices
Landscapes
- Connection Of Plates (AREA)
Abstract
A security padlock arrangement comprises a pair of fastening elements (10, 12) which are securable one to the other by the staple (31) of a padlock (30, 31). The construction is such that the staple is shrouded to restrict access to the staple when the elements are secured thereby. The elements may be adapted for use on a pivoted closure, as shown, or on a sliding door (fig. 6) not shown. The padlock staple may be embedded in a resin or metal block to further restrict access. <IMAGE>
Description
Security Padlock arrangement
This invention relates to a padlocking arrangement and more particularly to a padlocking arrangement which provides additional security against tampering.
Conventional padlocking arrangements such as are used for security doors or containers employ a shackle plate on a first part to be secured, e.g. a door, and a hasp on a second part, e.g. a door pillar, to which the first part is to be secured. The hasp locates over the shackle of the shackle plate and is secured thereon by means of the staple of a padlock which is arranged to pass through the shackle and prevent its withdrawal through the hasp. Such arrangements are susceptible of tampering in several ways. Firstly, the staple of the padlock is accessible and may be cut by means of, for example, a bolt cropper or hack saw, and also the hasp is exposed and easily admits a crow bar which can be used to break away the securement of the shackle plate or hasp from the door or door pillar.
The present invention seeks to provide a padlock arrangement which provides enhanced security.
According to the present invention there is provided a security padlocking arrangement comprising a pair of fastening elements which are securable one to the other by the staple of a padlock, their construction being such that the staple is shrouded to restrict access to the staple when the elements are secured thereby.
The shroud may be formed by one of the elements or may be made up by portions of both of the elements.
One of the elements may be in the form of a hasp and the other may be in the form of a shackle plate.
The shackle plate may be provided with through apertures for receiving security means such as screws or bolts or may be provided with projecting studs in order to permit securement to a part to be secured. The shackle plate may have a projecting staple for receiving the staple of a padlock or may have a projecting plate like portion having one or more holes receiving the staple of a padlock.
The shackle plate may have a portion which extends at right angles to one side of the shackle plate, with through apertures for receiving screws or bolts, which portion is provided with through apertures for receiving screws or bolts, thereby to facilitate securement to a post. In this latter construction the shackle plate may be provided with through apertures or projecting studs on the face adjacent the right angled portion. The shackle plate may be of substantially "T" configuration.
The hasp may be of substantially rectangular open ended box like configuration, one face of the box like configuration having a hole or slot for receiving the staple or projecting plate like portion of the shackle plate such that securement of the shackle plate thereto can be effected by receipt of the staple of a padlock through the staple or hole(s) in the projecting plate like portion with the staple of the padlock being shrouded by the box like configuration of the hasp.
The sides of the box configuration adjacent the face having the hole or slot may be extended to define a cavity for shrouding the fixing screws of the shackle plate when the parts are secured by a padlock or to shroud the entire shackle plate. The hasp may have a side extension provided with through apertures for receiving fixing screws or alternatively may be provided with fixing studs.
An alternative arrangement of hasp has one or more side extensions which are cranked outwardly and are provided with through apertures for receiving fixing screws or alternatively may be provided with fixing studs.
A refinement of the latter arrangement employs an extension on one side only and has a slot which extends along the side adjacent the extension and along its adjacent side so as to permit ends of the staple, or projecting plate like portion, of a shackle plate through either side. This latter configuration permits use on sliding or roller shutter doors.
In order that the invention it its various other preferred features may be understood more easily, some embodiments thereof will now be described, by way of exampleonly, with reference to the isometric drawings, in which:
Figure 1 is an exploded view of parts of a security padlocking arrangement constructed in accordance with the invention;
Figure 2 is an exploded view of a proprietory padlock for use with the arrangement of the present invention;
Figure 3 is an exploded view, similar to Figure 2, showing a refinement of a proprietory padlock for providing improved security;
Figure 4 shows a refinement of the hasp of the security padlocking arrangement shown in Figure 1;
Figure 5 shows an alternative configuration of shackle plate forming a refinement of the invention;;
Figure 6 is an exploded view of another version of a security padlocking arrangement constructed in accordance with the invention;
Figure 7 is an exploded view similar to Figure 1 showing an alternative construction of hasp in a security padlocking arrangement constructed in accordance with the invention; and
Figure 8 is an exploded view similar to that of
Figure 1 but having a reinforced hasp.
For simplicity of description similar parts in each of the constructions illustrated have been given the same reference numerals.
Referring now to Figure 1 there is illustrated a security padlocking arrangement which comprises a pair of fastening elements in the form of a hasp 10 and a shackle plate 11, each of which may be manufactured from steel sheet. The shackle plate 11 has a back plate 12 provided with a shackle element 13 which extends at right angles thereto substantially intermediately of two opposite sides and is provided with two spaced holes 14 for receiving the staple of a padlock. The shackle element may be secured to the back plate by, for example, welding. The back plate is provided with four square apertures 15 therethrough for receiving fixing screws or coach bolts to secure the shackle plate to a door frame or to one of a pair of hinged doors.
The hinge 10 is formed from sheet material by bending at right angles at a first bend 16 to provide a security plate portion 17, back on itself again at 18 at right angles to define one side 19 of a box section shroud and back on itself again at 20 to define two further sides 21 and 22 of the box section shroud. The other side of the box is formed by plates 23, 24 which are formed by bending longitudinally at right angles a strip of sheet material of length equal to the distance between the two sides 19 and 22 the resulting part being of substantially "L" shape in configuration. These parts are secured between the sides 19 and 22 with the ends of one arm of the "L" extending from the open back and along the edge of the sides and with the other arm extending inwardly parallel to the side 21 to provide the other side of the box section, define a cavity 25 and leave an elongate aperture 26 for receiving the shackle element 13 therethrough. The securing plate portion 17 is provided with four square through apertures 27 for receiving fixing screws or coach bolts to secure the hasp to a door.Optional backing plates 28, with through holes 29, may be provided for location on the opposite sides of a door when securing the shackle plate or hasp thereto by means of screws or coach bolts passing through the apertures 15 or 27, through the door, through the holes 29, the assembly then being secured by means of nuts on the screws or coach bolts bearing on the plates 28.
In use the shackle plate is mounted on a door post or door and the hasp is mounted on a door such that as the door is closed the shackle element 13 passes through the elongate aperture 26 into the box section. By virtue of the open ends of the box section a padlock can be inserted into the box section and its staple located through one or both of the holes 13 and the padlock then secured. It should be understood that the construction described is designed specifically for use with a padlock of the type having a removable staple as will be described in connection with Figure 2, but if sufficient space is provided within the box section, a padlock with a non removable staple could be arranged to engage one of the holes 14.It will be appreciated that the staple of the padlock is located within and shrouded by the walls of the box section and this makes it difficult, if not impossible, to access the staple to cut it with a saw or bolt croppers and therefore provides an extremely secure configuration.
Furthermore, when the arrangement is locked the cavity encloses the heads of the screws or coach bolts and it can be arranged that it also encloses the back plate as well.
In this way, access to the heads of the screws or coach bolts is prevented and access for a lever such as a crow bar can be avoided.
Figure 2 shows a proprietary padlock of the type having a body 30 and a separable hardened steel staple 31 which fits and locks into the body. This type of padlock is particularly suitable for use in the arrangement of
Figure 1 because the two arms of the staple can be introduced through the holes 14 of the shackle element from one open end of the box section shroud and the body can be introduced from the other open end such that staple and body are brought into locking relationship.
Figure 3 shows a refinement of the padlock that
I have made for optional use in this invention. Here the shackle element 31 is encased in a resin block 32 which in use makes it even more difficult to access the shackle element for cutting. It will be appreciated that mechanical equivalents of this construction can be employed, for example, the block may be a metal casting or may be replaced by a hollow housing or alternatively by a block with one or more projecting pins for locking engagement in the body 30.
Figure 4 shows an optional refinement of the hasp shown in Figure 1 in that the top of the box section shroud has a downwardly bevelled form, the purpose of which is to deflect blows from, for example, a hammer in an attempt to break the securement.
Figure 5 shows an alternative shape of the back plate 12 of the shackle plate 11. Here the back plate is of extended length and is bent backwardly at right angles to define an 'rL" shape cross section for wrapping round a post. In this construction the extended backwardly bent portion 33 has four square through apertures 34 similar to apertures 15 to permit mounting on the side of a post by means of coach bolts or screws.
Figure 6 illustrates an alternative construction in accordance with the invention which is particularly suitable for use with sliding or roller shutter doors. In this construction a shackle plate 41 is of similar construction to the shackle plate 11 of Figure 1 but has an elongate back plate 42. A shackle element 43 has two through holes 44 and the back plate in the illustrated embodiment has a single square aperture 45 each side of the shackle plate . A hasp 46 has an elongate rectangular back plate 47 which has at one longer edge a strip like portion 48, a portion of which is bent backwardly at right angles and then an extreme strip like portion 49 which is bent upwardly, as shown in the drawing, again at right angles so that it extends outwardly of and parallel to the main part of the back plate.The extreme strip like portion 49 is provided with three square through apertures for receiving screws or coach bolts. A slot extends from the edge of the back plate 47 transversely towards the strip like portion 48. A rectangular channel shaped portion 51 formed again from sheet metal has a slot 52 in one side which extends between its outer edge and the bottom of the channel. The channel shaped portion in secured on the back plate 47 of the hasp such that the slots 50 and 52 are in alignment and the rectangular channel and back plate forms a shroud of open ended rectangular box shaped configuration.In use, the hasp is fitted to the moveable panel of the door or shutter with, or without, a backing plate and the shackle plate is fitted to a fixed face of the structure, e.g. door frame, a second sliding door, floor or chassis member used with a "Luton" bodied road vehicle or similar vehicle. Again an optional backing plate is provided. It will be appreciated that the shackle element 43 can enter the slots 50, 52 as the door or shutter is closed with a sliding motion and that the padlock can be inserted from right and left open ends of the box section shroud similarly to the previous described constructions. It will also be appreciated that the spacing provided behind the back plate 47 due to the configuration of the bent strips 48 and 49 will accommodate the back plate 42 and the heads of the securing screws or coach bolts of the shackle plate 41.Furthermore, although this particular design is intended for use with sliding doors or roller shutters, it is also useable with hinged doors in which case the strip 49 is preferably made much wider and provided with additional securing screws. For some applications is may be preferable to use a hinged joint along axis A-A.
Figure 7 shows an alterative construction of hasp similar to that of Figure 1 except that instead of the plates 23 and 24 there is provided a single partition plate 54 which extends substantially at right angles to the walls 19, 20 and 21 and is provided with two through holes which in use align with the through holes 14 of the shackle element and permit engagement by the staple of the padlock to secure the hasp to the shackle plate.
Figure 8 shows a modified construction similar to that shown in Figure 1 except that the plates 23 and 24 of the hasp are replaced by a single plate 55 having slots 56 to receive a shackle element which in this case is in the form of a hardened steel curved staple 47, and a reinforcing bar 58 is welded to the security plate portion 17 and to the side 19 of the box section shroud.
Each of the embodiments described incorporate variations of construction and it will be appreciated that each embodiment can incorporate any one of these variations without departing from the spirit of this invention, for example, the bevelled shaping of the shroud shown in Figure 4, the optional hinging of the hasp as described in connection with Figure 6, or the partition plate construction of Figure 7.
Although the embodiments described employ plates with through holes for securement by screws or coach bolts it will be appreciated that studs or other fasteners could be employed for securing the shackle plate and hasp to their particular door or post and that such fixings may be fixed to the shackle plate or hasp by, for example, welding.
Although the constructions described employ a hasp that provides the entire shrouding of the padlock, it should be appreciated that some parts could be provided on the shackle plate which cooperate with parts on the hasp to provide shrouding when the parts are secured by a padlock.
Such constructions are considered to fall within the scope of this invention.
Claims (21)
1. A security padlock arrangement comprising a pair of fastening elements which are securable one to the other by the staple of a padlock, their construction being such that the staple is shrouded to restrict access to the staple when the elements are secured thereby.
2. A security padlock as claimed in claim 1, wherein the shroud is formed by one of the elements.
3. A security padlock as claimed in claim 1, wherein the shroud is made up by portions of both of the elements.
4. A security padlock as claimed in any one of the preceding claims, wherein one of the fastening elements is in the form of a hasp and the other is in the form of a shackle plate.
5. A security padlock as claimed in claim 4, wherein the shackle plate is provided with through apertures for receiving security means such as screws or bolts.
6. A security padlock as claimed in claim 4, wherein the shackle plate is provided with projecting studs in order to permit securement to a part to be secured.
7. A security padlock as claimed in any one of claims 4 to 6, wherein the shackle plate has a projecting staple for receiving the staple of a padlock.
8. A security padlock as claimed in any one of claims 4 to 6, wherein the shackle plate has one or more holes receiving the staple of a padlock.
9. A security padlock as claimed in any one of claims 4 to 8, wherein the shackle plate has a portion which extends at right angles to one side of the shackle plate, which portion is provided with through apertures for receiving screws or bolts, thereby to facilitate securement to a post.
10. A security padlock as claimed in claim 10, wherein the shackle plate is provided with through apertures on the face adjacent the right angled portion.
11. A security padlock as claimed in claim 10, wherein the shackle plate is provided with projecting studs on the face adjacent the right angled portion.
12. A security padlock as claimed in any one of claims 4 to 11, wherein the shackle plate is of substantially "T" configuration.
13. A security padlock as claimed in any one of claims 4 to 12, wherein the hasp is of substantially rectangular open ended box like configuration, one face of the box like configuration having a hole or slot for receiving the staple or projecting plate like portion of the shackle plate such that securement of the shackle plate thereto can be effected by receipt of the staple of a padlock through the staple or hole(s) in the projecting plate like portion with the staple of the padlock being shrouded by the box like configuration of the hasp.
14. A security padlock as claimed in claim 13, wherein the sides of the box configuration adjacent the face having the hole or slot are extended to define a cavity for shrouding the fixing screws of the shackle plate when the parts are secured by a padlock.
15. A security padlock as claimed in claim 13, wherein the side of the box configuration adjacent the face having the hole or slot are extended to define a cavity to shroud the entire shackle plate.
16. A security padlock as claimed in any one of claims 4 to 15, wherein the hasp has a side extension provided with through apertures for receiving fixing screws.
17. A security padlock as claimed in any one of claims 4 to 15, wherein the hasp is provided with fixing studs.
18. A security padlock as claimed in any one of claims 4 to 12, wherein the hasp has one or more side extensions which are cranked outwardly and are provided with through apertures for receiving fixing screws.
19. A security padlock as claimed in any one of claims 4 to 12, wherein the hasp has one or more side extensions which are cranked outwardly and are provided with fixing studs.
20. A security padlock as claimed in claim 18 or 19, wherein an extension is provided on the box configuration on one side only and has a slot which extends along the side adjacent the extension and along its adjacent side so as to permit ends of the staple, or projecting plate like portion, of a shackle plate to enter through either side.
21. A security padlock substantially as described herein with reference to the drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9316604A GB2280929A (en) | 1993-08-10 | 1993-08-10 | Security shroud arrangement for a padlock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9316604A GB2280929A (en) | 1993-08-10 | 1993-08-10 | Security shroud arrangement for a padlock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9316604D0 GB9316604D0 (en) | 1993-09-29 |
| GB2280929A true GB2280929A (en) | 1995-02-15 |
Family
ID=10740264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9316604A Withdrawn GB2280929A (en) | 1993-08-10 | 1993-08-10 | Security shroud arrangement for a padlock |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2280929A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3572062A (en) * | 1969-09-22 | 1971-03-23 | S & C Electric Co | Tamper proof locking means using a padlock |
| US4106315A (en) * | 1977-01-14 | 1978-08-15 | Dohanyos John A | Shielded lock assembly |
| US4286814A (en) * | 1977-10-11 | 1981-09-01 | Harrington Richard P | Universally pivotal padlock and staple shielding hasp |
| EP0281333A2 (en) * | 1987-02-28 | 1988-09-07 | Edmund Anderson | Locking system |
| US4987755A (en) * | 1981-03-04 | 1991-01-29 | The United States Of America, As Represented By The Secretary Of The Navy | High security lock assembly |
| US5174135A (en) * | 1991-06-06 | 1992-12-29 | Loughlin Robert W | Tubular hasp for padlocks |
-
1993
- 1993-08-10 GB GB9316604A patent/GB2280929A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3572062A (en) * | 1969-09-22 | 1971-03-23 | S & C Electric Co | Tamper proof locking means using a padlock |
| US4106315A (en) * | 1977-01-14 | 1978-08-15 | Dohanyos John A | Shielded lock assembly |
| US4286814A (en) * | 1977-10-11 | 1981-09-01 | Harrington Richard P | Universally pivotal padlock and staple shielding hasp |
| US4987755A (en) * | 1981-03-04 | 1991-01-29 | The United States Of America, As Represented By The Secretary Of The Navy | High security lock assembly |
| EP0281333A2 (en) * | 1987-02-28 | 1988-09-07 | Edmund Anderson | Locking system |
| US5174135A (en) * | 1991-06-06 | 1992-12-29 | Loughlin Robert W | Tubular hasp for padlocks |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9316604D0 (en) | 1993-09-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |