WO1983001807A1

WO1983001807A1 - Fence-post

Info

Publication number: WO1983001807A1
Application number: PCT/SE1982/000372
Authority: WO
Inventors: Sven Ek
Original assignee: Sven Ek
Priority date: 1981-11-17
Filing date: 1982-11-08
Publication date: 1983-05-26
Also published as: FI821523L; EP0093754A1; DK219582A; FI821523A0; NO821607L; SE8106811L

Abstract

Fence-posts are erected by first digging a pit into which the lower end of the post is placed, and then refilling the pit. The present invention eliminates the pit-digging stage by using a post which is provided at its lower end with one or more outwardly directed wings or blades, each of which has a cutting edge increasing as the post penetrates further into the ground while being erected.

Description

Fence-post

The present invention relates to a fence-post. Such posts may have various cross-sections, the most usual being rectangular or circular, but a wide variety of cross-sections are feasible. Hitherto, when erecting a fence post a pit has generally had to be dug, the post inserted and braced and then the pit refilled. It is also possible to pour concrete into the pit around the erected post, subsequently covering this with a layer of earth, gravel or the like so that the ground around the post is level. This procedure is both time-consuming and laborious. It also requires a variety of tools which must therefore be transported by truck. The known procedure for erecting posts is too complicated and also too expensive, especially in the case of putting up netting along roads to keep animals off the roads.

The object of the present invention is to produce a post which can be erected with the aid of only a beater for knocking it into the ground. However, an additional tool may sometimes be. necessary, especially if the post is to be anchored in a rock foundation. A tool is then required to make a hole into which the post can be pressed by the beater. The post is provided with one or more wings or stabilizers around its periphery to give it stability, said wings being located in a plane parallel to the central axis of the post. Each wing or blade has at least one inclined edge extending from the post. The outer end of the edge continues into an edge which is substantially horizontal and directed towards the post. Each wing is thus substantially triangular in shape. The inclined edge surface of each wing is preferably made as a cutting edge.

Each wing is provided with one or more impressions to effect reinforcing ridges.

Generally two mirror-image wings are applied at a predetermined level on the fence-post. A pair of wings should preferably be located lowermost, but they may also be placed at a point between the ends of the post. A pair of wings may of course by replaced by one wing having substantially the same surface area as two cooperating wings.

In some cases it may be advisable to place two pairs of wings, one above the other. Another possibility is to use only one pair, displacing one of the wings so that it is located above the other.

The lower end of the post is generally shaped to enable it to penetrate the surface of the ground.

Further characteristics of the present invention are revealed in the following claims.

The present invention will be described more fully with reference to the accompanying five drawings showing five difference embodiments of a fencepost according to the present invention.

Figure 1 shows a fence post consisting of a post 1, in the present case having square cross-section, but other cross-sections are also feasible such as circuit, Z-shaped, etc. At the lower end of the post are two wings 2 and 3. The wings may also be called stabilizers since they have a stabilizing function for the post as will be explained in the following. Each wing is in the form of a rectangle having one horizontal edge and one inclined edge. The inclined edge is a cutting edge. It is thus provided with a sharp edge or the like. Of course the cutting edge need not be completely straight, but may be curved as is also the case with the horizontal edge. Each wing is provided with a guide groove 4 and 5. The pair of wings 2 and 3 are welded to the post 1 at two diagonally opposite corners. They could of course have been located opposite each other. Each wing is preferably welded on both sides. The two windings may of course be replaced by a single wing having the same outer contours as the two wings in the pair.

Figure 2 shows a post which is provided with a wing pair 2' and 3' of the same type as those in Figure 1. The wings are also provided with depres sions 4' and 5'. This fence-post differs from, that according to Fig. 1 in that the wing pair has been welded a short distance from the lower end of the post, thus producing a pointed section of just post below the wing pair 2' and 3'.

Figure 3 shows a post of substantially the same type as in Fig. 2, the only difference being that the wings 6 and 7 are shaped differently from the wings 2' and 3'.

Figure 4 shows a post in which the lefthand wing is displaced to a position above the righthand wing. The two wings are designated 2" and 3" and the strengthening grooves 4 " and 5".

Figure 5 shows a post 1 provided with two complete wing pairs one above the other. The lowermost pair 6' and 7' is located at the bottom of the post and the upper pair 11 and 12 is immediately above. The two pairs of wings are shaped like the pair shown in Fig.3. The two pairs are provided with impressed grooves to give them stability and these grooves are designated 8', 9', 13' and 14'.

The posts and wings described above are normally treated against corrosion in a manner known per se.

A post according to one of the preceding embodiments is placed vertically on the surface of the ground. The top end of the post is then beaten so that the point penetrates the ground and the sharp blade edges cut into the ground beneath as they come into contact therewith. As the post penetrates into the ground, the cutting edge increases, and thus the penetration of the post into the ground. The post is generally inserted so far that the upper, horizontal edge of the wing is below ground. The wings provide good stability against lateral movement. Some type of beater is advisable for knocking the post into the ground, and this may be operated by its own drive means, not an external means. If a post according to the present invention is to be placed above a large stone or on a rock foundation, a hole must be drilled having approximately the same size as the diameter of the post. The post is inserted in the hole and wedged by suitable elements.

It is clear from the above how simply and quickly a post can be erected in comparison with the conventional method of erecting post. The inexpensive erection of posts also makes it economically feasible to set up fences to keep animals off the main roads.

Claims

1. Fence-post, the end of said post which is intended to be inserted in the ground is provided with one or more wings or blades projecting outwardly, each having a cutting edge increasing as the post is inserted in the ground, characterised in that the post (1) comprises a pipe, open at least at the bottom end and having square cross section, that each wing (2 and 3) has three edges, one of which is parallel to the longitudinal direction of the post (1) and that each wing (2 and 3) is metallically joined by its edge parallel to the post (1), by means of welding, for instance, to one outer edge of the post (1).

2. Fence-post according to claim 1, characterised in that the post (1) has two wings (2 and 3) which are secured at two diagonally opposed outer edges of the post (1).

3. Fence-post according to claim 2, characterised in that the wings (2 and 3) of the post are parallel to each other.