SHARE Russian patent published in 1999 - IPC

FIELD: agricultural engineering. SUBSTANCE: share is made in the form of trapezium-shaped strip with landward and furrow edges on sides, cutting part with blade and point positioned at side adjacent to landward edge. Back is positioned at strip side opposed to blade. Back end is adapted for engagement with respective end of plow-bottom surface. Back is provided with locking openings for related openings of plow body shoe. Axes of openings are arranged between blade and back in parallel with end and oriented in direction away from landward edge to furrow edge. Wedge-shaped widened part is positioned adjacent to rear side of strip in the vicinity of related cutting part and provided with rigidity rib oriented toward share edges. Rim adjoining share back rear side has height reducing from landward edge to furrow edge. Height h of rim in zone adjacent to locking opening outer with respect to landward edge exceeds height h1 of rim in zone adjacent to locking opening outer with respect to furrow edge by 1.4-1.7 times. Face of rim is aligned with related surface of strip. Wedge-shaped widened part adjacent to rigidity rib has height L reducing from landward edge to furrow edge and having minimum value in zone of intersection between furrow edge and rigidity rib, with this minimum value not exceeding 0-5 mm. EFFECT: increased efficiency and improved strength in parts of share subjected to maximum loading, such as zones adjacent to point and at outer locking opening with respect to landward edge. 1 cl, 3 dwg