AU2011201037A1 - An agriculture share - Google Patents

Abstract

An agricultural share (10) comprising a first portion (12) and a second portion (14), wherein the second portion (14) comprises a ground engaging means (24), the first portion (12) is arranged to engage a point holder (30) to be mounted on an agricultural tine, the first portion (12) comprising a cut away section (18), the cut away section (18) being arranged to facilitate resilient deformation of a rear section (20) of the first portion (12), whereby the resilient deformation of the rear section (20) allows the first portion (12) to pass through and then frictionally engage with an opening in the point holder (30). 36 '20 ftcae

Description

AUSTRALIA PATENTS ACT 1990 COMPLETE SPECIFICATION FOR A STANDARD PATENT (Original) APPLICATION NO: LODGED: COMPLETE SPECIFICATION LODGED: ACCEPTED: PUBLISHED: RELATED ART: NAME OF APPLICANT: Henry Frank Jarvis ACTUAL INVENTOR: Henry Frank Jarvis ADDRESS FOR SERVICE: LORD AND COMPANY, Patent and Trade Mark Attorneys, of 4 Douro Place, West Perth, Western Australia, 6005, AUSTRALIA. INVENTION TITLE: "AN AGRICULTURE SHARE" DETAILS OF ASSOCIATED PROVISIONAL APPLICATION NO: Australian Provisional Patent Application Number 2010900994 filed on 10 March 2010 The following Statement is a full description of this invention including the best method of performing it known to me/us: TITLE "AN AGRICULTURE SHARE" 5 The present invention relates to an agricultural share. Agricultural shares are commonly used to cultivate ground in preparation for seeding. The agricultural share may be affixed either to an adapter known as a point holder or directly to an agricultural tine, which is capable of holding the share in contact with the 10 ground. The share is then forced forward through the ground to cultivate same. As the share cultivates the ground, vegetable matter and other debris may be forced upwards along the front face of the share. The vegetable matter and debris that has travelled up the front face of the share may become engaged with and trapped in the 15 fastening arrangement of the share and the point holder or the share and the tine. It is common for an agricultural share to be affixed to a tine using a nut and bolt or a split pin, or to engage the share in a point holder that is bolted onto the tine and held in position by a bolt or split pin. These fastening arrangements present a number of 20 protrusions, which act as collection points for debris. Once engaged with the fastening arrangements the vegetable matter and debris cause corrosion to occur at a rapid rate. Once corroded the fastening arrangements become difficult to disengage and are often damaged whilst being removed. 2 The present invention attempts to overcome at least in part the aforementioned disadvantages of previously known agricultural shares. In accordance with one aspect of the present invention there is provided an agricultural 5 share comprising a first portion arranged to engage a point holder to be mounted on an agricultural tine, and a second portion comprising a ground engaging means, wherein the first portion comprises a cut away section, the cut away section arranged to facilitate resilient deformation of the rear section of the first portion. Whereby, the resilient deformation of the rear section allows the first portion to pass through and then 10 frictionally engage with an opening in a point holder. The present invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a perspective view of an agricultural share in accordance with the present 15 invention. Figure 2 is a perspective view of a point holder. Figure 3 is a side view of the agricultural share of Figure 1 partially engaged with the point holder of Figure 2. Figure 4 is a perspective view of the agricultural share of Figure 1 engaged with the point 20 holder of Figure 2. Referring to the Figures, there is shown an agricultural share 10 comprising a first portion 12 arranged to engage a point holder 30 and a second ground-engaging portion 14. 3 As shown in Figure 1 the first portion 12 comprises a hooked engaging means 16, a cut away portion 18, a rear section 20, an upper curved surface 22 and an engaging means 28. The first portion 12 is preferably formed of spring steel although it is possible to produce the share as a whole using a casting process. 5 The ground-engaging portion 14 comprises a number of wear resistant portions 24. The wear-resistant portions 24 preferably comprise a tungsten alloy to give greater wear resistance to the front of the share. 10 Shown in Figure 2 is a point holder 30. The point holder 30 comprises a body section 32, a plurality of apertures 34 for the passage of bolts and an engagement means 36. The body section 30 and engaging means 36 forming a substantially rectangular opening 38 at the rear of the point holder 30. 15 Shown in Figure 3 are the point holder 30 of Figure 2 and the agricultural share 10 of Figure 1, the share 10 being shown partially engaging the point holder 30. In this arrangement the curved upper surface 22 of the share is in close contact with the engaging means 36 of the point holder 30 and the rear section 20 is in close contact with the body 32 of the point holder. Forcing the first portion 12 into the opening 38 causes 20 the rear section 20 to be resiliently deformed, whereby the cut away portion 18 in the first portion 12 is substantially closed. The first portion 12 is so arranged as to then pass through the opening 38 at the rear of the point holder 30, when the cut away portion 18 is substantially closed. Figure 4 shows the share 10 of the present invention fully engaged with the point holder 4 30. The engaging means 28 of the share 10 is held in close contact with the front face 40 of the body 32 of the point holder 30. The hooked engaging means 16 are being held in close contact with the engaging means 32 of the point holder. 5 In use, the first portion 12 is arranged to engage a point holder 30 attached to an agricultural tine in interference fit. When inserted into the opening 38 of the point holder 30, the curved upper surface 22 comes into close contact with the engagement means 36 of the point holder and the rear section 20 contacts the body portion 32 of the point holder 30. When sufficient force is applied, the rear section 20 is resiliently deformed 10 causing the cut away portion 18 to be forced closed, whereby the rear section 20 and the rear of the curved upper surface 22 are forced into close contact. The closure of the cut away section 18 sufficiently reduces the thickness of the first portion 12 to allow it to pass through the opening 38. Once the curved upper surface 22 15 and the hooked engaging means 16 pass through the engagement means 36 of the point holder 30, the rear section 20 resiliently returns to its original shape. Thus the hooked engaging means 16 and the engagement means 36 are held close contact. The upper curved surface 22 stands proud of the point holder 30. 20 To remove the first portion 12 from the point holder, a chisel or other like implement is placed on the curved upper surface 22 and struck with a hammer. The impulse will be sufficient to cause the cut away section 18 to close and allow the hook engaging means 16 to pass through the engagement means 32 of the point holder. 5 Modifications and variations as would be apparent to a skilled addressee are deemed to be within the scope of the present invention. 6

Claims (8)

1. An agricultural share comprising a first and second portion, wherein the second portion comprises a ground engaging means, the first portion is arranged to engage a point holder to be mounted on an agricultural tine, the first portion comprising a cut away section, the cut away section being arranged to facilitate resilient deformation of a rear section of the first portion, whereby the resilient deformation of the rear section allows the first portion to pass through and then frictionally engage with an opening in the point holder.

2. An agricultural share according to claim 1, wherein the resilient deformation of the rear section of the first portion causes the cut away portion to be forced closed.

3. An agricultural share according to claim 2, wherein the resilient deformation of the rear section of the first portion reduces the thickness of the first portion to allow it to pass through the opening of the point holder.

4. An agricultural share according to any one of the preceding claims, wherein the first portion further comprises a hooked engaging means being arranged in use to engage with the point holder.

5. An agricultural share according to any one of the preceding claims, wherein 0 the first portion further comprises an upper curved surface being arranged, in use, to close the cut away portion of the first portion, as the first portion is inserted into the point holder.

6. An agricultural share according to any one of the preceding claims, wherein the ground engaging portion comprises a number of wear resistant portions. 7

7. An agricultural share according to claim 6, wherein the wear resistant portions comprise an alloy of tungsten.

8. An agricultural share substantially as hereinbefore described with reference to the accompanying drawings. 8