This invention relates to fencing and methods of producing fencing, and more particularly, the present invention relates to rail and picket fencing that is selectively angled on site to conform the slope of the fencing to the slope of an underlying terrain.
Fencing has existed for many years. In particular, wrought iron fencing or the like has been developed to produce a more decorative type of fencing. This type of fencing comprises a series of vertical pickets which are attached to horizontal rails. In some known types of wrought iron fencing, the rails have holes through which the pickets extend. Screws connect the pickets attach to the rails with screws or by welding.
In the past, wrought iron fencing erected upon a sloping terrain was typically produced on site by planting several spaced-apart vertical posts, mounting the rails to the posts at an angle generally parallel to the sloping terrain, and mounting the vertical pickets to the rails. This method of producing fencing is time consuming and inefficient.
To meet the need for providing fencing that conforms to the slop of the terrain, wrought iron fencing has been custom manufactured. The terrain to be fenced is measured to determine the slopes. Plats are marked, and custom fence sections manufactured. These have to be labeled in order to track the location and sequence during installation. However, during the manufacturing, the terrain may have changed. For example, a pool area to be fenced may change due to subterranean problems such as rocks and the like uncovered during installation of the pool. The area to be fenced thus may change or be re-graded. This results in re-work or scrap sections of fencing, which increases the costs of the fencing.
Recently, fencing has been produced off-site wherein the rails and pickets are all mounted together to form a panel. The pickets are welded to the rails with the use of a top weld between the picket and the top rail and a bottom weld between the picket and the bottom edge of the bottom rail, as shown in prior art
The fence panel is then transported to the erection site and installed. To track or conform to the slope of the terrain, the panel is shifted (or in the term of the art, “racked”) so that the pickets remain substantially vertical and rails are oriented substantially parallel to the sloping terrain. The fence panel is racked so that the rails are allowed to be reoriented with respect to the pickets thereon through the use of a mild steel weld (or screws) which allow flexing of the weld. While this shifting of the fence panel has worked fairly well when shifting only a small amount or a few degrees, there is a problem with more significant changes in the angle of the rails relative to the pickets. When the panel is shifted to a large degree, the rails tend to roll or rotate on the unwelded side and thereby partially separate themselves from the pickets. The rails and pickets there are not square to each other and the fence has unsatisfactory gaps at the connections between the rails and the pickets. The gaps weaken the fence panel and are unsightly.
Accordingly, it is seen that a need remains for a fencing panel that can be produced off-site and shifted during assembly on-site without causing the rails to separate from the pickets. It is to the provision of such that the present invention is primarily directed.
The present invention meets the need in the art by providing a fence panel that readily adjusts to conform substantially to a slope of a terrain during installation of the fence panel. The fence panel tracks a sloped grade of a portion of a terrain surface for attaching to adjacent ones of the fence panel to define an elongate length of fencing along the terrain surface, comprises a first rail disposed parallel and spaced-apart from a second rail, which rails define a longitudinal length of a fence panel. Each rail defines on a side opposing spaced-apart first and second side edges, with the rails disposed at an angle relative to horizontal. A plurality of spaced-apart pickets define a pair of second pickets and a plurality of first pickets. The pickets are disposed substantially perpendicular to horizontal and attach to the side of the rails with fasteners such that each of the first pickets attach to the rails only by a fastener between the first side edge and the respective first picket and the second pickets attach to the rails only by a fastener between the second side edge and the respective second picket. The fence panel, being racked by moving opposing ends of the panel in opposing directions transverse to the longitudinal axis of the rails, conforms a slope of the rails substantially to the slope of the portion of the terrain by changing the angle between the pickets and the rails while the pickets substantially perpendicular to horizontal without the rails rolling away front the first and second pickets.
In another aspect, the present invention provides a method of making a fence panel for tracking a sloped grade during installation of a fence over a terrain, comprising the steps of:
(a) disposing a pair of rails parallel and spaced-apart at an angle to a horizontal plane to define a longitudinal length of a fence panel, the rails defining opposing first and second side edges spaced-apart relative to the horizontal plane;
(b) attaching a plurality of first pickets to a side of the rails disposed substantially perpendicular to the horizontal plane with fasteners only between the first pickets and the first side edge of the respective rail; and
(c) attaching at least two second pickets to the side of the respective rail disposed substantially perpendicular to the horizontal plane by with fasteners only between the second pickets and the second side edge of the respective rail
whereby the fence panel, being racked by moving opposing ends of the fence panel in opposing directions transverse to the longitudinal axis of the rails, conforms a slope of the rails substantially to a slope of a portion of the terrain by changing the angle between the first and second pickets and the rails while the first and second pickets remain substantially perpendicular to horizontal without the rails rolling away from the first and second pickets.
Objects, features, and advantages of the present invention will become apparent from a reading of the following detailed description of the invention and claims in view of the appended drawings.
Referring now in more detail to the drawings, in which like numerals indicate like parts throughout the several views,
The outermost pickets 16′ and 16′ of each section 11 mount or fasten to the top rail 13 with a lower, flexible, mild steel weld 18 extending along the lower edge 25 of the top rail 13, and mount to the bottom rail 14 with an upper, flexible, mild steel weld 19 extending along the upper edge 26 of the bottom rail 14. The outer pickets 16′ thus connect to the rails 13, 14 with opposing welds 18, 19 on the opposing side faces 25, 26.
Each inner picket 16 of each section 11 mounts to the top rail 13 with an upper, flexible, mild steel weld 21 extending along the upper edge 26 of the top rail 13, and mount to the bottom rail 14 with a lower, flexible, mild steel weld 22 extending along the lower edge 25 of the bottom rail 14.
It has been found that a section 11 of fence manufactured in this manner may be shifted up to approximately 30 degrees, with respect to the angle between the pickets and the rails, although about 20 degrees is the preferable limit, without causing the rails 13 and 14 to twist or rotate and thereby separate from the pickets 16.
In the embodiment illustrated in
To provide a greater variance in fencing, each section 11 may also be manufactured at a pre-selected angle between the pickets 16 and the rails 13 and 14. As such, a fencing having a pre-selected angle of 30 degrees may be shifted a maximum of 30 degrees so as to provide fencing which may be mounted to a terrain angle having a range of between 0 degrees and 60 degrees from horizontal. It has been found however, that about 20 degrees is the preferable maximum. At about 25 degrees of change, the pickets 16, 16′ begin to have visually detectable appearances of slight distortion, as the distance between the distal ends of the vertical pickets changes due to the racking. This change in span, while slight, is induced by the different axis of rotation of the welds 18, 19 for the outer pickets 16′ than for the welds 21, 22 for the inner pickets 16. Accordingly, a series of fence sections 11 having the rails 13, 14 at an angle selected from the group of 0 degrees, 20 degrees, 40 degrees, and 60 degrees (relative to a horizontal plane) appropriately allows these sections to be placed in fences 10 on terrain of 0 to about 80 degrees.
In the illustrated embodiment, the pickets 16, 16′ are spaced uniformly apart. In an alternate embodiment, the pickets 16, 16′ have different spans which may contribute different ornamental appearances.
While the disclosed embodiment has the fastening welds reversed as to the outer pickets 16′ from the fastening welds for the inner pickets 16, the racking capability of the present invention will also be found in embodiments in which the pickets with the reversed fastening are spaced inwardly from the outermost pickets. Preferably, two pickets spaced-apart have the reversed fastening from the other pickets in the fence section. It is believed however that limited degrees of racking would be available in an embodiment having at least one picket with reversed fastening to the rails. For example,
Further, while the disclosed fence section is manufactured of wrought iron, the picket and rail racking fence section can be readily assembled with pickets and rails of other materials, including plastic, wood, or other materials, given that the rails fasten to the pickets with fasteners to fix a connection therebetween with at least one but preferably two pickets having reversed fastening. Fasteners other than welds can be used to fix the connection between the rails and the pickets. For example, in an embodiment with wood members, the fastening is accomplished with screws at the side edges of the rails as disclosed herein.
While this invention has been described in detail with particular references to the preferred embodiments thereof, it should be understood that many modifications, additions and deletions, in addition to those expressly recited, may be made thereto without departure from the spirit and scope of the invention.
The present application is a continuation-in-part of co-pending provisional application Ser. No. 60/258,220, filed Dec. 26, 2000.
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1757686 | Rosenbaum | May 1930 | A |
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5544866 | Dye | Aug 1996 | A |
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9944656 | Mar 2000 | AU |
19648179 | Apr 1998 | DE |
1061340 | Apr 1954 | FR |
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Number | Date | Country | |
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60258220 | Dec 2000 | US |