NZ272205A

NZ272205A - Wire netting; clockwise and anticlockwise coils of wire assembled at right angles to one another, production thereof

Info

Publication number: NZ272205A
Application number: NZ27220595A
Authority: NZ
Inventors: John Nicholas Taylor
Original assignee: John Nicholas Taylor
Priority date: 1995-05-25
Filing date: 1995-05-25
Publication date: 1997-09-22

Description

<div class="application article clearfix" id="description"> New Zealand No. 272205 International No. PCT/ TO BE ENTERED AFTER ACCEPTANCE AND PUBLICATION Priority dates: 25.05.1995 Complete Specification Filed: 25.05.1995 Classification:^) B21F27/02 Publication date: 22 September 1997 Journal No.: 1420 NEW ZEALAND PATENTS ACT 1953 COMPLETE SPECIFICATION Title of Invantion: Firmly knotted wire netting Name, address and nationality of applicant(s) as in international application form: JOHN NICHOLAS TAYLOR, British subject of 2 Paddock Cottages, Compton, Wynyates, Warwickshire CV35 OND, United Kingdom 272205 Patents Form No. 5 Our Ref: AA800528 NEW ZEALAND PATENTS ACT 19"" COMPLETE SPECIF ICATIQ] FIRMLY SHOTTED WIRE I, JOHN NICHOLAS TAYLOR, a British Subject of 2 Paddock Cottages, Compton,Wynyates, Warwickshire CV35 OND, United Kingdom hereby declare the invention, for which I pray that a patent may be granted to me and the method by which it is to be j. rformed, to be particularly described in and by the following statement: PT0511064 l - i A 272 205 This invention relates to firmly knotted wire netting. Wire netting is used extensively in agriculture for livestock fencing and gates and in the building trade for reinforcement, security fencing and garden boundaries etc. Wire is normally joined by twisting which can be insecure, welding which can be expensive and alter the properties of the metal, or linking which only gives rigidity in one direction. An object of this invention is to cheaply provide firmly knotted wire netting with square or rectangular holes where the knots are secure .and the properties of the wire are maintained throughout. A further object is to go some way in overcoming the disadvantages described in the above paragraph or at least to provide the public with a useful alternative choice. According to one aspect of the present invention, there is provided firmly knotted wire netting formed from clockwise and anti-clockwise coils of wire with a given diameter and pitch, assembled at right angles to one another by rotating one of the clockwise or anti-clockwise coils so that its end passes twice through a pair of loops on the other of the clockwise or anti-clockwise coil, stretched simultaneously " substantially in one plane'and flattened. i-io1' ■ \ $6 ^ - 2 - 27 2 20 5 Any thickness of wire can be used as can high tensile and mild steel wire. Galvanising can be done before or after production. The invention also provides for a method of forming firmly knotted wire netting including: forming clockwise and anti-clockwise coils of wire having a given diameter and pitch; assembly and clockwise coil substantially at right angles to one another by rotating one of the clockwise or anti-clockwise coils so that its end passes twice through a pair of hoops on the other side of the clockwise and anti-clockwise coil; stretching simultaneously substantially in one plain and flattening the resulting netting. Three specific examples of the invention using only a few wires each for clarity, will now be described with reference to the accompanying Figures 1, 2, 3 and 4. In Figures 1 and 2 the tracks 13 need to be very much longer in reality. The essential feature in all of the examples is the left handed and right handed coiling of the wires. Entwining them together by rotating the one so that the ends pass twice through a pair of coils on each of the others and stretching the coils simultaneously to form the firmly tied wire mesh. The distance between each coil should equal their diameter by two thirds approximately. - 3 - Two coils each way are produced for each knot required and are joined and connected to roller 10 at the sides, see A in Figure 3. Two extra loops per coil are needed in this instance. Rectangular panels can be produced on a rectangular rack, for instance 50 m x 2m instead of 10m x 10m panels of tied wire mesh. Diamond shaped firmed knotted wire netting i.e. netting with diagonal wires, can be manufactured on a continuous production line as shown in Figure 1. The wires 1 and 2 pass through left handed and right handed spring making machines 3 and 4 which are set to produce coils of a given diameter, spacing and length. Coils 5 and 6 then rotate as they are produced so they can be set to entwine automatically 7 and 8 before cutting to length or afterwards in a separate operation. At 9 the ends of a left handed coil and a right handed coil are joined and connected to a narrow waisted roller 10 whose cross-section is shown in Figure 4, which are driven by flat belts 12 moving at twice the speed of production along a stationary track 13 that gets wider so they gradually climb from running on their waists to running on their rims (the variable speed pulley principle) and accelerate to - 4 - 272205 simultaneously stretch the coils in both directions between the friction panels 11. Towards the end of tightening process the knots pass between two pairs of rollers 14 set with a gap of four times the thickness of the wire, which help tighten the knots before the netting is released 15 and rolled up on a powered spool 16 for ease of transport. As an alternative embodiment to the roller 10 being driven by the flat belts 12, the rollers 10 may be carried by an endless coil spring 17 or a track of channels sliding along stationery channels. Various means for transporting the rollers 10 are known in the art and it is considered that implementing this operation would be within the purview of one skilled in the art. Firmly knotted wire netting with horizontal wires and vertical wires on a continuous production lines can be produced, as shown in Figure 2. Referring to Figure 2, the wires 1 and 2 pass through left handed and right handed (anti-clockwise and clockwise) spring making machines 3 and 4 which produce the coils required 5 and 6 which are cut to length. Those coils are assembled at 7 as in 8. Special wire gripping devices 9 that are on the market, connect the ends of the right handed coils - 5 - 272205 to narrow waisted rollers 10 whose cross is shown in Figure 4 which are driven by belts 12 moving at twice the speed of the production along a stationary track 13 that gets wider so that they gradually climb from running on their waists to running on their rims and accelerate to simultaneously stretch the coils in both directions with the aid of the powered spool 16 pulling against "the braked paddle wheel 20. The braked paddle wheel 20 incorporates channels defined by the lengthwise space between adjacent paddles which hold the coils during assembly. Towards the end of the tightening process the knots pass between rollers 14 set at four times the thickness of the wire to flatten them before the netting is released at 15 and rolled up. 17 is an endless conveyer which carries a track of. channels, to which rollers 10 are joined. Panels of firmly knotted wire netting up to 10 meters square can be manufactured, as shown in Figure 3. The wires 1 and 2 pass through a left handed spring making machine 3 and a right handed spring making machine 4 which are set to produce coils 5 whose diameter x 2 x 22/7 is approximately equal to the required distance between the knots and whose distance between each coil equals two thirds of the diameter. - 6 - 272^° The coils are produced for each knot required. The coils can assemble themselves as they are being produced or be cut to length and then assembled (shown as 7 and 8) . Specially purchased connectors 9 join the wire to roller 10 whose diameter is at least 40mm which runs freely inside sliding door rails 11 which are hinged on stationary pivots 12. The rails 11 have to be strengthened and extended to take the hydraulic rams 13 which are double acting and have adjustable pressure. The rams 13 (or cable winches for rectangular panels if preferred), drive the rails 11 which simultaneously stretch the coils to produce symmetrical joints 14. Towards the ends of the tightening process, these right angled knots 14 are squeezed from above and below to assist their formation. The panel is released and can be cut to order. Panels of diamond shaped netting can be produced by linking the end rollers on each side by spring and chain or by using a dual roller assembly in each corner which runs in both rails 11 and is connected to the diagonals. The ends of each pair of left handed and right handed coils remaining are joined and connected to roller 10 at the sides (see inset A). Two extra l^-»ps per coil are needed in this instance. Rectangular panels can be produced on a rectangular rack, for instance 50m x 2m instead of 10m x 10m panels of tied wire mesh. 27 1 ^ It will thus be seen that the present invention provides firmly knotted wire netting. Wherein the aforegoing description, reference has been made to integers or components having known equivalents, then such equivalents are herein incorporated as if individually set forth. Although this invention has been described by way of examples and with reference to possible embodiments thereof, it is to be appreciated that improvements and/or modification may be made thereto without departing from the scope of the invention as described herein and in the appended claims. </div>

Claims

<div class="application article clearfix printTableText" id="claims"> - 8 - 272205 WHAT I CLAIM IS:

1. Firmly knotted wire netting formed from clockwise and anti-clockwise coils of wire with a given diameter and pitch, assembled substantially at right angles to one another by rotating one of the clockwise or anti-clockwise coils so that its end passes twice through a pair of loops on the other of the clockwise or anti-clockwise coil, stretched simultaneously substantially in one plane and flattened.

2. Firmly knotted wire netting as claimed in claim 1 produced with diagonal wire on a continuous production line as shown and described in Figure 1.

3. Firmly knotted wire netting as claimed in claim 1 with horizontal and vertical wire made on a continuous production line as shown and described in Figure 2.

4. Firmly knotted wire netting as claimed in claim 1 produced in panels with horizontal and vertical wire or diagonal wire as shown and described in Figure 3.

5. A method of forming firmly knotted wire netting including: forming clockwise and anti-clockwise coils of wire having a given diameter and pitch; assembly and clockwise coil substantially at right 9 272205 angles to one another by rotating one of the clockwise or anti-clockwise coils so that its end passes twice through a pair of hoops on the other side of the clockwise and anti-clockwise coil; stretching simultaneously substantially in one plain and flattening the resulting netting.

6. Firmly knotted wire netting substantially as herein described with reference to the accompanying drawings.

7. A method of forming firmly knotted wire netting substantially as herein described and with reference to the accompanying drawings. JOHN—NICHOLAS TA^QR ASPEC45478 END OF CLAIMS </div>