Light-weight spade. RU patent 2246190.

FIELD: horticulture, in particular, tillage tools.

SUBSTANCE: spade has shank bushing rigidly coupled to flat bayonet. The latter is equipped with side ends-wings bent in rearward direction and with axial shank. Bushing is extending to mid portion of bayonet and is equipped with sharpened front end having edges contacting with and rigidly connected to flat bayonet.

EFFECT: reduced consumption of physical force applied to spade for soil tillage, and reduced breakage of soil structure during repeated digging of soil.

5 cl, 2 dwg

IPC classes for russian patent Light-weight spade. RU patent 2246190. (RU 2246190):

A01B1/02 - Spades; Shovels

A01B1 - Hand tools (edge trimmers for lawns A01G0003060000)

Another patents in same IPC classes:

Spade / 2245005
Spade has shank, blade with rigidity rib in mid portion, scraper disposed on blade for moving thereon, and handle. Two slots are made in blade at both sides of rigidity rib, in parallel therewith. Scraper is composed of two parts disposed at both sides of blade and connected with one another through slots by means of two bolts. Scraper profiles conform to profile of respective sides of blade, including rigidity rib and handle end. Part of scraper arranged at front side of blade is equipped with supporting surface and two guiding pins rigidly connected with said surface and adapted for movement along slots.

Hole cutting apparatus / 2246189
Apparatus has pushing-out device, which may be withdrawn from soil during operation without applying of substantial muscular force by user. Apparatus is formed as ring made from pipe section and coil-type spring attached to ring with its lower coil. Ring is adapted for placing onto soil. Inner diameter of ring is equal to outer diameter of larger base of conical blade and inner diameter of spring exceeds outer diameter of said larger base. Upper coil of spring is attached to lower ends of carriers and lower and upper coils of spring are biased. Ratio of spring wire diameter to outer diameter of section of supporting ring is 0.35:0.44. Lower surfaces of blade cutting edge and supporting ring are lying in single plane.

Tillage method / 2245009
Method involves cutting soil by means of plow share having strut diagonally extending from lower part of moldboard to frame to provide for ripping soil open from inside. Employment of strut allows force acting upon plow or cultivator to be reduced and prevents plow or cultivator from clogging with plant remains.

Hand-held horticultural hiller / 2245006
Horticultural hiller has share with undercutting knife on its front part, tine attached to share and equipped with bracket, pulling handle pivotally fixed on bracket, and hiller deepening arm. Share moldboards are made in the form of two screws with coils oriented in opposite directions. Screws are provided with blades and arranged in horizontal plane. Hiller has moving wheel mounted on shaft fixed on tine and drive wheel arranged between screws. Moving wheel and drive wheel are engaged with one another through pin.

Method for restoration of contaminated soil, ground and water / 2243638
Method involves mechanical removal of excessive contaminants from surface and reducing toxicity of contaminated soil; sowing green manure crops and perennial grasses; preliminarily removing taking soil samples from contaminated surface and separating native contaminant destructors therefrom; after mechanical removal of contaminant from soil surface, providing sequential treatment of plot soil with water-soluble humates and at least double treatment with native contaminant destructors; mellowing soil; applying lime with mineral fertilizers such as saltpeter, double superphosphate and calcium chloride. Green manure crops are sown after application of fertilizers. Method further involves grinding green manure crops, plowing into soil and covering with soil by means of covering roll.

Light-weight spade / 2246190
Spade has shank bushing rigidly coupled to flat bayonet. The latter is equipped with side ends-wings bent in rearward direction and with axial shank. Bushing is extending to mid portion of bayonet and is equipped with sharpened front end having edges contacting with and rigidly connected to flat bayonet.

Method and apparatus for controlling of soil erosion on slopes / 2246807
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Apparatus for forming of intermittent micro raised portions / 2246808
Apparatus has frame and blade-type swivel connected with frame by means of free-motion mechanism. Blades of swivel are made concave and movably fixed thereon. Locking mechanisms for each individual blade are mounted on blade-type swivel. Locking mechanism switch is positioned on frame. Such arrangement and interconnection between said parts of apparatus allow micro raised portions to be provided within wide range of soil conditions.

Spade and working tool for spade / 2253205
Spade has working tool comprising ladle-shaped casing made from polymeric reinforced material and provided with front edge portion formed as blade, and devices for connecting to handle. Strengthening head is attached to blade of working tool casing. Strengthening head has V-shaped section and is manufactured from impact-resistant material. One side of head is arranged on face side of casing of working tool and other side with at least one attachment member is arranged on rear side of casing. At least one member adapted for cooperation with head attachment member and device for joining with handle shank are fixed on rear side of casing.

Ground digging apparatus / 2260272
Apparatus has frame and wheels mounted on lower part of frame. Lower side of frame lower part is reinforced with plates. Reinforcing planks disposed on upper part of frame are made channel-shaped. Spade cleaning scraper is provided on front end of frame upper part. Spade shank is made conical, with base being disposed at site of contacting with traverse of frame upper part. Rubberized grip is provided in upper part of spade shank.