GB2406342A - Palisade fencing - Google Patents
Palisade fencing Download PDFInfo
- Publication number
- GB2406342A GB2406342A GB0419046A GB0419046A GB2406342A GB 2406342 A GB2406342 A GB 2406342A GB 0419046 A GB0419046 A GB 0419046A GB 0419046 A GB0419046 A GB 0419046A GB 2406342 A GB2406342 A GB 2406342A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pale
- pales
- palisade fence
- fence
- palisade
- 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.)
- Granted
Links
- 241000940835 Pales Species 0.000 claims abstract description 47
- 206010033546 Pallor Diseases 0.000 claims abstract description 47
- 239000011324 bead Substances 0.000 claims description 10
- 230000000295 complement effect Effects 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 2
- 241000251468 Actinopterygii Species 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- RVKCCVTVZORVGD-UHFFFAOYSA-N trinexapac-ethyl Chemical compound O=C1CC(C(=O)OCC)CC(=O)C1=C(O)C1CC1 RVKCCVTVZORVGD-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H17/00—Fencing, e.g. fences, enclosures, corrals
- E04H17/14—Fences constructed of rigid elements, e.g. with additional wire fillings or with posts
- E04H17/1413—Post-and-rail fences, e.g. without vertical cross-members
- E04H17/1417—Post-and-rail fences, e.g. without vertical cross-members with vertical cross-members
- E04H17/1426—Picket fences
- E04H17/143—Picket fences with separate pickets attached to the side of the horizontal members
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Fencing (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
A palisade fence 10 comprises support posts 12 and rails 14,16 extending between the posts 12, and pales 18 mounted between the rails 14,16. The rails 14,16 define V-shaped apertures 28,30 for receiving the pales 18. The pales 18 are additionally secured to the rails 14,16 by bolts 40.
Description
PALISADE FENCING
FIELD OF THE INVENTION
This invention relates to fencing, and in particular to palisade fencing.
BACKGROUND OF THE INVENTION
Palisade fencing typically comprises a number of upright support posts fixed in concrete foundations and upper and lower rails which extend between the posts and provide mounting for a plurality of upright pales secured to the rails. The pales are usually of corrugated or angled section IS and may have spiked or rounded upper ends, depending on the fence application. The pales are fixed by centrally located bolts to the L-section rails which are in turn secured to the H-section support posts using fish plates.
The applicant's UK Patent GB 2256447 B describes an alternative fence configuration in which the horizontal arm of each L-section rail is cut to define a number of apertures, each aperture adapted to receive the end of a pale. The pales are configured such that only a selected length of each pale end portion may pass through the respective aperture. The earlier patent describes a number of means of achieving this, and in the commercial embodiment of the invention dimples are formed on the centre line of each pale to act as stops.
This arrangement allows a secure fence to be constructed without the requirement to bolt the pales to the cross rails and the applicant has supplied fencing of this configuration for use in a wide variety of security applications.
Of course no fence configuration can repel a sustained and determined attack and on occasion pales of fences made in accordance with GB 2256447 B have been at least partially detached from one or both cross rails by deforming or cutting portions of the apertured arm of the L-shaped cross rail, thus enlarging the aperture to allow displacement or removal of the pale.
In conventional palisade fencing, unauthorized pale removal or displacement is typically achieved by cutting one or both of the bolts which secure the pale to the vertical arms of each L-shaped cross rail. One method of cutting the bolts involves insertion of a chisel into the space between the rear of an angle section pale and the front face of the cross rail.
It is among the objectives of embodiments of the present invention to provide a palisade fence configuration which obviates or mitigates these and other difficulties.
SUMMARY OF THE INVENTION
According to a first aspect of the present invention there is provided a palisade fence comprising: support posts; rails for extending between the posts; and pales for mounting between the rails, the rails defining apertures for receiving the pales and the pales additionally being secured to the rails by fasteners.
Fences in accordance with the invention offer the advantage over fencing as disclosed in GB 2256447 B that cutting or deforming an apertured portion of a rail is not alone sufficient to allow displacement or removal of a pale, as the pale will remain secured to the rail by the fastener.
Furthermore, where the rail has an L-section, the rear face of the vertical portion of the rail and the front face of the pale through which the fastener passes are preferably directly adjacent one another. Accordingly, there is little if any possibility of gaining access to the very short portion of fastener extending between the rail and pale, thus protecting the fastener from attack by a chisel or the like.
Reference will be made primarily herein to L-section rails having a vertical arm and a horizontal arm, the horizontal arm being apertured to receive the rail while the vertical arm receives the fastener. However, those of skill in the art will recognise that the arms of the rail could of course be at angles other than 90 , and may be inclined to the horizontal or vertical, may have a C, I or H-section, or a box section, or indeed may take a non-rectilinear form.
S Preferably, the apertures are of substantially complementary shape to the pales. In a preferred arrangement, the apertures are of substantially complementary shape to end portions of the pales and the ends of the pales extend through the apertures, the end portions of each pale being provided with a projection spaced from an end of the pale such that only a selected length of each end portion may pass through the associated aperture in the rail. In a preferred embodiment, the projection on each pale end portion is provided by pressing a bead or dimple from the pale, although the projection may be formed by many different means, such as those described in GB 2256447 B. or by locating a welding bead on the pale. Where the projection is formed by a bead or dimple, the bead may be provided centrally of the pale.
However, for increased security one or more beads may alternatively or in addition be provided spaced from the centre line of the pale, which beads may remain effective in restraining the pale relative to the rail even when a central part of the apertured portion of the rail is deformed in an attempt to remove a pale.
A palisade fence normally comprises an upper and a lower rail. In certain embodiments of the invention a third rail may be provided, providing additional security.
At least in the United Kingdom, palisade fencing will generally comply with British Standard BS 1722: Part 12: 1990. Specification For Steel Palisade Fences. Fencing made in accordance with this standard is typically supplied in 2.75 m long panels, each panel comprising upper and lower rails and 17 pales. In embodiments of the invention a larger number of pales may be provided, and up to 27 pales may be provided with a single panel. Increasing the number of pales in this manner has a number of benefits. One is to decrease the level of visibility through the fence, and to make it more difficult to climb the fence. Furthermore, the decreased spacing between the pales makes it more difficult to locate tools between the pales; it is known for car jacks to be located in the space between two pales, and the jack extended to create a gap through which objects or persons may pass. The decreased spacing also makes it more difficult to access the rear of the fence to attack the rail or the fastener.
The fastener may take any appropriate form, and is preferably a bolt. Preferably, the fastener passes through the front portion of the rail, typically a substantially vertical portion of the rail, and through a central portion of the pale. The bolt may be secured by a nut which engages with a rear face of the pale. The nut will preferably be of the type provided with a nut having an outer portion for engagement with a tightening tool such as a spanner or wrench, and an inner portion of a shape which is not easily gripped by a conventional tool. The two portions are frangibly connected such that when the nut is fully tightened and the operator continues to apply force to the outer portion of the nut, the outer portion will shear from the inner portion. The preferred pale has an angled or curved section and the nut is located centrally of the pale such that the inner portion of the nut is relatively inaccessible, and thus protected from attack.
Those of skill in the art will recognise that many of the features described above have utility in fencing not necessarily made in accordance with the first aspect of the invention, and may be provided in fences individually or in combination in accordance with further aspects of the invention.
In another aspect of the invention a palisade fence comprises pales, each pale having a face for location directly adjacent a face of a support rail and fasteners for securing the pales to the rail and passing through the faces.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a front view of a section of palisade fence in accordance with one embodiment of the present invention; Figure 2 is an end view of the fence of Figure 1; Figure 3 is a sectional view on line 3 - 3 of Figure 1, shown somewhat enlarged; and Figure 4 is a sectional view on line 4 - 4 of Figure 3.
DETAILED DESCRIPTION OF DRAWINGS
Reference is first made to Figures 1 and 2 of the drawings, which show part of a palisade fence 10 in accordance with one embodiment of the present invention. The fence 10 comprises a number of support posts 12 (only one shown) which provide mounting for 2.75 m fence sections or panels formed of upper and lower horizontal rails 14, 16 and spaced, upright angle section pales 18 which extend between the rails 14, 16.
The posts 12 are set in concrete foundations 20 and have an H section. The rails 14, 16 have an inverted L-section and are fixed to the posts 12 by means of fish plates 22 which pass through slots in the posts 12, in a central portion of a fence one fish plate providing mounting for two rails, one on either side of the post.
In a conventional palisade fence the pales 18 are bolted to the front of the rails 14, 16, however in this embodiment of the invention the rails 14, 16 themselves are adapted to seat and retain the pales 18, and furthermore the pales 18 are bolted to the rails 14, 16, but using a more secure arrangement than a conventional fence. The pales 18 are of an angled section, defining a shallow "V". Additionally, the pales 18 are slightly corrugated. Corresponding generally V shaped apertures 28, 30 are provided in each rail 14, 16. The ends of each pale 18 may thus be passed through the apertures 28, 30 in the rails 14, 16, the pale ends 24, 26 passing through the apertures 28, 30 until beads or dimples 32, 34, pressed from the pales 18, engage the lower or upper surface of the horizontal arm 36, 38 of the respective rail 14, 16.
In addition to a central rearwardly directed bead 32a (see Fig. 4) on each pale 18, two rearwardly directed dimples 32b, 32c are also provided towards the edges of the pale. Thus, when the rails 14, 16 are fixed between a pair of posts 12, the pales 18 are fixed and retained relative to the rails 14, 16.
The pales 18 are additionally secured to the rails 14, 16 by fasteners in the form of bolts 40 which pass through the vertical forward arms 42, 44 of the rails 14, 16 and the central portions of the pales 18. The bolts 40 are themselves secured by nuts 46 which are located in the centre of the "V" of the pale 18. The nuts 46 are of the form having an outer portion for engagement with a tightening tool such as a spanner or wrench, and an inner portion of a shape which is not easily gripped by a conventional tool.
The two portions are frangibly connected such that when the nut is fully tightened and the operator continues to apply force to the outer portion of the nut, the outer portion will shear from the inner portion. The remaining inner portion of the nut 46 is further more relatively inaccessible with the "V" of the pale 18, and cannot readily be engaged and held by a tool. This contrasts with conventional fencing, in which the nut will be located, relatively exposed on the planar rear face of the vertical rail arms.
Furthermore, as the central portion of each pale 18 of this embodiment of the invention lies directly adjacent the rear face of the rail arms 42, 44, it is not possible to insert a conventional cutting tool or chisel into the tight gap 50 between the pale 18 and the rail arms 42, 44 to cut or shear the bolt 40. In addition, access to the gap 50 is only available from below and from the rear of the fence 10.
From the above description it will be apparent that the fence 10 is more secure than the fence described in GB 2256447 B due to the provision of the securing bolts 40. Further, the bolts 40 provide greater security than conventional bolted or riveted palisade fencing due to the inaccessibility of the securing nuts 46 and the relatively short and inaccessible section of bolt 40 which extends between the pales 18 and the rails 14, 16.
In other embodiments of the invention only a single dimple 32, 34 may be provided for engaging each rail, or another arrangement may be provided for restraining the pale 18 relative to the rails 14, 16, such as the arrangements described in GB 2256447 B. In alternative aspects of the invention the dimples 32, 34 may be omitted, and the pales 18 located axially relative to the rails 14, 16 solely by bolts, rivets or the like.
IS Welding or gettable or curable materials may also be utilised to fix the pales 18 in the apertures 28, 30.
Claims (21)
1. A palisade fence comprising: support posts) rails for extending between the posts; and pales for mounting between the rails, the rails defining apertures for receiving the pales and the pales additionally being secured to the rails by fasteners.
2. A palisade fence of claim 1, wherein at least one rail comprises an Lsection having a front vertical arm and a rear horizontal arm, the horizontal arm being apertured to receive the pales while the vertical arm receives the fastener.
3. A palisade fence of claim 2, wherein the rear face of the vertical arm of the rail and a front face of the pale through which the fastener passes are directly adjacent one another.
4. A palisade fence of any preceding claim, wherein the apertures are of complementary shape to the pales.
5. A palisade fence of claim 4, wherein the apertures are of complementary shape to end portions of the pales and the ends of the pales extend through the apertures, the end portions of each pale being provided with a projection spaced from an end of the pale such that only a selected length of each end portion passes through the associated aperture in the rail.
6. A palisade fence of claim 5, wherein the projection on each pale end portion comprises at least one bead pressed from the pale.
7. A palisade fence of claim 5, wherein at least one projection on each pale end portion is a welding bead.
8. A palisade fence of any of claims 5 to 7, wherein a projection is provided centrally of the pale.
9. A palisade fence of any of claims 5 or 7, wherein a projection is provided spaced from a centre line of the pale.
10. A palisade fence of claim 8, wherein at least one further projection is provided spaced from a centre line of the pale.
11. A palisade fence of any preceding claim, comprising three vertically spaced rails.
12. A palisade fence of any preceding claim, wherein the fastener is a bolt.
13. A palisade fence of claim 2, or any of claims 3 to 12, when dependent on claim 2 wherein the fastener passes through the vertical arm of the rail and through a central portion of the pale.
14. A palisade fence of claim 12, or claim 13 when dependent on claim 12, wherein the bolt is secured by a nut which engages with a rear face of the pale.
15. A palisade fence of claim 14, wherein the nut has an outer portion for engagement with a tightening tool, and an inner portion of a shape which is not easily gripped by a conventional tool, the two portions being frangibly connected.
16. A palisade fence of either claims 14 or 15, wherein each pale has an angle section and the nut is located centrally of the pale.
17. A palisade fence comprising a plurality of pales, each pale having a face for location directly adjacent a face of a support rail and fasteners for securing the pales to the rail and passing through the faces.
18. A palisade fence of claim 17, wherein at least one rail comprises an L-section having a front vertical arm and a rear horizontal arm, the horizontal arm being apertured to receive the pales while the vertical arm receives the fastener.
19. A palisade fence of either of claims 17 or 18, wherein the fastener is a bolt secured by a nut which engages with a rear face of the pale.
20. A palisade fence of claim 19, wherein each pale has an angle section and the nut is located centrally of the pale.
21. A palisade fence substantially as described with reference to the drawings.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0724233A GB2442375B (en) | 2003-09-15 | 2004-08-26 | Palisade fencing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0321547.2A GB0321547D0 (en) | 2003-09-15 | 2003-09-15 | Palisade fencing |
Publications (4)
Publication Number | Publication Date |
---|---|
GB0419046D0 GB0419046D0 (en) | 2004-09-29 |
GB2406342A true GB2406342A (en) | 2005-03-30 |
GB2406342B GB2406342B (en) | 2008-05-14 |
GB2406342C GB2406342C (en) | 2023-08-02 |
Family
ID=29227086
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GBGB0321547.2A Ceased GB0321547D0 (en) | 2003-09-15 | 2003-09-15 | Palisade fencing |
GB0419046.8A Expired - Lifetime GB2406342C (en) | 2003-09-15 | 2004-08-26 | Palisade fencing |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GBGB0321547.2A Ceased GB0321547D0 (en) | 2003-09-15 | 2003-09-15 | Palisade fencing |
Country Status (2)
Country | Link |
---|---|
US (1) | US20050056821A1 (en) |
GB (2) | GB0321547D0 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2493025A (en) * | 2011-07-22 | 2013-01-23 | Barkers Engineering Ltd | Fence assembly for reducing failure as a result of impact of highly localised force. |
WO2019211744A1 (en) | 2018-04-30 | 2019-11-07 | Complete Composite Systems Limited | Improvements in fencing |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070221902A1 (en) * | 2003-09-15 | 2007-09-27 | Ian Kerr | Palisade fencing |
US7540472B2 (en) * | 2007-05-10 | 2009-06-02 | Suncor Stainless, Inc. | Rail and ramp systems with adjustable fittings |
US11542721B2 (en) | 2020-06-08 | 2023-01-03 | Origin Point Brands, Llc | Prefabricated modular fencing with advantageously-shaped connectors |
USD951082S1 (en) | 2020-06-15 | 2022-05-10 | Origin Point Bran Ds, Llc | Smooth incurvate connector |
USD948330S1 (en) | 2020-06-15 | 2022-04-12 | Origin Point Brands, Llc | Faceted conoidal connector |
US20220235574A1 (en) * | 2021-01-24 | 2022-07-28 | Robert Earl Treadway | Fence Picket Alignment Tool and Method of Use |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US936246A (en) * | 1908-12-12 | 1909-10-05 | Franklin P Smith | Fence or other inclosure. |
GB191002029A (en) * | 1910-01-26 | 1911-01-26 | Herbert John Haddan | Improvements in the Method of Joining Metal Bars, and in the Construction of Fences, Railings, Frame-work, or the like, from Bars so Joined. |
GB663009A (en) * | 1949-07-06 | 1951-12-12 | Bayliss Jones & Bayliss Ltd | Improvements in or relating to fencing |
GB774007A (en) * | 1954-09-14 | 1957-05-01 | Stanley Charles Morgan | Improvements in or relating to fencing |
GB2256447A (en) * | 1991-06-04 | 1992-12-09 | William Bain & Company Fencing | Palisade fences |
GB2363400A (en) * | 2000-06-12 | 2001-12-19 | Hadley Ind Plc | A security fence |
GB2373260A (en) * | 2001-03-08 | 2002-09-18 | Heras Uk Fencing Systems Ltd | Adjustable fence |
GB2373261A (en) * | 2001-03-14 | 2002-09-18 | Heras Uk Fencing Systems Ltd | Adjustable fence panel and method of assembly |
GB2393741A (en) * | 2002-10-04 | 2004-04-07 | Heras Uk Fencing Systems Ltd | Self adjusting fence panel |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2919112A (en) * | 1958-04-08 | 1959-12-29 | Aluminum Fences Inc | Collapsible fence arrangement |
US3902703A (en) * | 1972-02-04 | 1975-09-02 | Allibert Exploitation | Fence |
US3877140A (en) * | 1972-06-30 | 1975-04-15 | Hermann Adolf Josef Topolsek | Method of manufacturing a fence of thermoplastic pickets with embedded wire connecting links |
US5192054A (en) * | 1991-01-24 | 1993-03-09 | Ivan Sharp | Prefabricated simulated wrought iron and like fencing systems and methods |
US5224256A (en) * | 1991-10-07 | 1993-07-06 | Vernon Haglund | Method of assembly of tubular metallic fences |
GB2269644B (en) * | 1992-08-14 | 1995-02-22 | Kinnings Marlow Ltd | Security nuts,screws and bolts |
AU4197397A (en) * | 1996-09-13 | 1998-04-02 | Yvon De Guise | Kit for a guardrail or fence |
US5730426A (en) * | 1996-10-09 | 1998-03-24 | Tu; Yu-Pin | Wire mesh fence structure |
US5882001A (en) * | 1997-07-31 | 1999-03-16 | Reinbold; James F. | Modular fence structure |
US20030164487A1 (en) * | 2001-03-01 | 2003-09-04 | Hadley Industries Plc | Security fence with secured bolts |
-
2003
- 2003-09-15 GB GBGB0321547.2A patent/GB0321547D0/en not_active Ceased
-
2004
- 2004-08-02 US US10/910,157 patent/US20050056821A1/en not_active Abandoned
- 2004-08-26 GB GB0419046.8A patent/GB2406342C/en not_active Expired - Lifetime
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US936246A (en) * | 1908-12-12 | 1909-10-05 | Franklin P Smith | Fence or other inclosure. |
GB191002029A (en) * | 1910-01-26 | 1911-01-26 | Herbert John Haddan | Improvements in the Method of Joining Metal Bars, and in the Construction of Fences, Railings, Frame-work, or the like, from Bars so Joined. |
GB663009A (en) * | 1949-07-06 | 1951-12-12 | Bayliss Jones & Bayliss Ltd | Improvements in or relating to fencing |
GB774007A (en) * | 1954-09-14 | 1957-05-01 | Stanley Charles Morgan | Improvements in or relating to fencing |
GB2256447A (en) * | 1991-06-04 | 1992-12-09 | William Bain & Company Fencing | Palisade fences |
GB2363400A (en) * | 2000-06-12 | 2001-12-19 | Hadley Ind Plc | A security fence |
GB2373260A (en) * | 2001-03-08 | 2002-09-18 | Heras Uk Fencing Systems Ltd | Adjustable fence |
GB2373261A (en) * | 2001-03-14 | 2002-09-18 | Heras Uk Fencing Systems Ltd | Adjustable fence panel and method of assembly |
GB2393741A (en) * | 2002-10-04 | 2004-04-07 | Heras Uk Fencing Systems Ltd | Self adjusting fence panel |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2493025A (en) * | 2011-07-22 | 2013-01-23 | Barkers Engineering Ltd | Fence assembly for reducing failure as a result of impact of highly localised force. |
GB2493025B (en) * | 2011-07-22 | 2016-08-17 | Barkers Eng Ltd | Fence assemblies |
WO2019211744A1 (en) | 2018-04-30 | 2019-11-07 | Complete Composite Systems Limited | Improvements in fencing |
Also Published As
Publication number | Publication date |
---|---|
GB0419046D0 (en) | 2004-09-29 |
GB2406342B (en) | 2008-05-14 |
GB2406342C (en) | 2023-08-02 |
US20050056821A1 (en) | 2005-03-17 |
GB0321547D0 (en) | 2003-10-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) |
Free format text: REGISTERED BETWEEN 20101028 AND 20101103 |
|
PE20 | Patent expired after termination of 20 years |
Expiry date: 20240825 |