DESC:TITLE OF THE INVENTION
A system for sowing seeds

FIELD OF THE INVENTION
[001] The invention relates to a system for sowing seeds.

BACKGROUND OF THE INVENTION
[002] Sowing or planting seeds is an essential part of crop production which requires placing seeds in soil at a required or correct depth and spacing.
[003] Generally, manual techniques of sowing are employed which include manual broadcasting, dropping seeds by hand or through a bamboo/metal funnel attached to the plough in furrows dug up in soil. Such manual techniques although common and widely used, are slow and laborious. Also, achieving uniform seed distribution through manual techniques is a challenge. It is well known that timely and proper sowing of seeds is crucial for a good/optimum crop yield. In view of the aforesaid, there is a need for a technique which addresses at-least aforementioned problems.

SUMMARY OF THE INVENTION
[004] Accordingly, the present invention provides a system for sowing seeds, the system comprises at least one tubular member having a passageway, the tubular member extending from a proximal open end to a distal open end, the tubular member having an opening adjacent to the proximal open end for receiving seeds in the passageway from a chamber, and the distal open end allows the seeds to leave the tubular member, the tubular member having an intermediate region, the intermediate region having a narrow passageway compared to passageway of other regions of the tubular member; and a pump coupled to the proximal open end of each tubular member for generating pressurized air in the passageway of the tubular member, the pressurized air along with the seed travels towards the distal open end through the intermediate region, the narrow passageway of the intermediate region increases velocity of the pressurized air resulting in a supersonic flow downstream of the intermediate region, the supersonic flow creates a shock-wave around the seed, the shock-wave around the seed leads the seed discharging out of the distal open end and drills a hole into soil allowing the seed to penetrate and implant in the soil.

BRIEF DESCRIPTION OF THE DRAWINGS
[005] Reference will be made to embodiments of the invention, examples of which may be illustrated in accompanying figures. These figures are intended to be illustrative, not limiting. Although the invention is generally described in context of these embodiments, it should be understood that it is not intended to limit the scope of the invention to these particular embodiments.
Figure 1 shows a system for sowing seeds in accordance with an embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION
[006] The present invention is directed towards a system for sowing seeds, whereby seeds discharged from the system penetrate soil to implant themselves in the soil without damaging soil and/or the seed.
[007] Figure 1 shows a system 100 for sowing seeds. The system 100 comprises a tubular member 110, a chamber 120, and a pump (not shown).
[008] As shown, the tubular member 110 extends from a proximal open end open to a distal open end. In an embodiment, the tubular member 110 has a passageway extending from the proximal open end to the distal open end. At the proximal open end, the pump is connected. The proximal open end of the tubular member 110 has an extension with ridges thereon which can be connected/coupled with an outlet of the pump. The ridges prevent any leakage of air generated by the pump. Alternately, the pump can be connected with the proximal end of the tubular members via coupling mechanisms. The pump generates pressurized air into passageway of the tubular member 110. In an embodiment, the pressurized air is generated in range of 16 psi to 48 psi depending upon wight and size of seed and also on type of soil where seeds are to be sowed/implanted. Thus, the pressure at which air is to be generated can be selected at site of sowing seeds. The distal open end allows the pressurized air to flow out of the tubular member 110. In this regard, the distal open end is aligned with the pump such that pressurized air travels in a straight line and exits the tubular member 110 through the distal open end. In an embodiment, at the distal open end, the tubular member 110 has a curved extension 150 extending from the distal open end. The curved extension 150 thus continues from the passageway forming a coanda surface, and the pressurized air sticks with the curved extension 150 due to coanda effect. The curved extension 150 extends in a direction away from ground surface causing the pressurized air leaving the distal open end to divert by following the curved extension 150 rather than continuing in a straight line.
[009] Further, as shown in the figure 1, the chamber 120 is provided adjacent to proximal open end of the tubular member 110. The chamber 120 holds plurality of seeds X. In this regard, the tubular member 110 has an opening. The opening is adjacent to the first open end and is on side of the tubular member 110. The chamber 120 is provided in communication with the opening, and through the opening one seed at a time is introduced in the passageway of tubular member 110. The pump when operated, generates pressurized air into passageway of the tubular member 110 which moves rapidly along the tubular member 110, and at the opening the pressurized air creates a negative pressure sucking the seeds out of the chamber 120 and into the tubular member 110. The seeds placed/stored in the chamber 120 are thus sucked out of chamber 120 due to negative pressure created at the opening. Area of the opening of chamber 120 is dimensioned depending upon size of the seed such that one seed at a time is introduced in the tubular member 110. Accordingly, as the pump is operated, the seed and the pressurized air from the pump move towards the distal open end, whereby as discussed hereinabove the pressurized air diverts by following the curved extension 150, and the seed continues to travel in a straight line. In use, the system 100 for sowing seeds is aligned with surface of the soil. Accordingly, one or more seeds leaving the tubular member 110 penetrates the soil.
[010] Further, as shown in the figure 1, the tubular member 110 has a venturi profile/shape, whereby the tubular member 110 has an upper region 112, an intermediate region 114 and a lower region 116. In an embodiment, the intermediate region 114 has a narrow passageway or a smaller cross-section compared to passageway of the upper region 112 and the lower region 116. Further, the passageway of the upper region 112 converges into passageway of the intermediate region 114 whereby the passageway of the upper region 112 narrows down as it extends towards the intermediate region 114, and passageway of the lower region 116 diverges out of the intermediate regions 114 whereby the passageway of the lower region 116 broadens as it extends from the intermediate region 114. Accordingly, radius of passageway of the upper region 112 reduces from proximal open end towards intermediate region 114 whereas radius of passageway of lower region 116 increases towards distal open end. The radius of passageway of intermediate region 114 is constant. Further, length of the intermediate region 114 is considerably less compared to the upper region 112 and lower region 116. The dimensions of the tubular member 110 and the passageway are a design consideration and will correspond with size of the seed. For example, for a seed having radius of approximately 2.5 mm, the passageway of the intermediate region 114 has radius of at-least 3mm. The radius of the passageway of the upper region 112 and the lower region 116 adjacent to intermediate region 114 is approximately 3mm. Further, the radius of the passageway adjacent to proximal open end is at-least 21mm which narrows down towards the intermediate region 114, and the radius of the passageway adjacent to distal open end is 7mm. Further, the upper region 112 has a minimum length of 55mm, the lower regions has a minimum length of 35mm and the intermediate region 114 has a minimum length of 7mm. As the pressurized air along with the seed travels from the upper region 112 to the lower region 116, the narrow passageway of the intermediate region 114 causes a constriction which increases velocity of the pressurized air and the seed leaving the intermediate region 114. The passageway of the upper region 112 converging into the passageway of the intermediate region 114, and passageway of the lower region 116 diverging out of passageway of the intermediate region 114 as shown causing a constriction which optimally increases velocity of the pressurized air. The increase in velocity of the pressurized air and the seed results in a supersonic flow downstream of the intermediate region 114. The supersonic flow causes ambient air around the seed to form a shock-wave around the seed. The shock-wave ahead of the seed leads the seed discharging out of the distal open end and drills a hole into the soil allowing the seed to penetrate and implant in the soil. Accordingly, the shock wave and the seed continues in straight line whereas the pressurized air behind the seed is diverted by curved extension 150. Thus, the pressurized air moves away from the direction of movement of seed reducing the pressure on the seed and preventing the pressurized air form causing any damage to the soil and/or seed which has been implanted.
[011] In an embodiment, the system comprises plurality of tubular members, whereby each tubular member 110 is spaced apart from each other such that seeds can be planted at required or correct spacing in the soil. Each tubular member 110 has a dedicated pump and chamber 120 described hereinbefore. Alternately, a pump with multiple outlets may be connected with each tubular member 110.
[012] Advantageously, the present invention provides a system for sowing seeds which enables planting of seeds at a correct distance and space in the soil resulting in optimum crop yield.
[013] While the present invention has been described with respect to certain embodiments, it will be apparent to those skilled in the art that various changes and modification may be made without departing from the scope of the invention as defined in the following claims.

,CLAIMS:WE CLAIM
1. A system (100) for sowing seeds, the system comprises:
at least one tubular member (110) having a passageway, the tubular member (110) extending from a proximal open end to a distal open end, the tubular member (110) having an opening adjacent to the proximal open end for receiving seeds in the passageway from a chamber (120), and the distal open end allows the seeds to leave the tubular member (110), the tubular member (110) having an intermediate region (114), the intermediate region (114) having a narrow passageway compared to passageway of other regions of the tubular member (110); and
a pump coupled to the proximal open end of each tubular member (110) for generating pressurized air in the passageway of the tubular member (110), the pressurized air along with the seed travels towards the distal open end through the intermediate region (114), the narrow passageway of the intermediate region (114) increases velocity of the pressurized air resulting in a supersonic flow downstream of the intermediate region (114), the supersonic flow creates a shock-wave around the seed, the shock-wave around the seed leads the seed discharging out of the distal open end and drills a hole into soil allowing the seed to penetrate and implant in the soil.
1. The system as claimed in claim 1, wherein the tubular member (110) has a curved extension (150) extending from the distal open end causing the pressurized air from the pump to follow the curved extension (150) and the seed to move towards the distal open end to travel in a straight line.
2. The system as claimed in claim 1, wherein the tubular member (110) has an upper region (112) and a lower region (116), passageway of the upper region (112) converges into the passageway of the intermediate region (114), and passageway of the lower region (116) diverges out of passageway of the intermediate region (114) causing a constriction at the intermediate region (114) which increases velocity of the pressurized air.

3. The system as claimed in claim 1, wherein the pressurized air from the pump creates a negative pressure at the opening sucking the seeds out of the chamber (120) into the tubular member (110).

4. The system as claimed in claim 1, wherein the pump generates pressurized air in range of 16 psi to 48 psi depending upon weight and size of seed and also on type of soil where seeds are to be implanted.

5. The system as claimed in claim 1, wherein the system comprises of plurality of tubular members, each tubular member (110) is spaced apart from each other such that seeds can be planted at required spacing in the soil.