CLIAMS:We Claim:

1. A quick fit mechanism for power harrow blade having a power harrow blade assembly (1) carried by a rotor through driving shafts (7, 10, 13) and gears (8, 9, 11, 12, 14) to transfer power and rotation for rotating the attached power harrow blade assembly (1); wherein said power harrow blade assembly (1) comprises at least a pair of power harrow blades (2) mounted on a rotatable blade mount housing (3) at fixed angle through the holes provided on said power harrow blade (2) and blade mount housing (3) to be fastening with a double pin (4), said double pin (4) having a hole wherein a single pin (5) to be treated as a supporting part which is locked by linchpin (6) thereby inserting in the hole of a single pin (5) to lock and to hold the power harrow blade assembly (1).

2. The quick fit mechanism for power harrow blade as claimed in claim 1, wherein the power harrow blade assembly (1) increases the field efficiency by providing easily replaceable power harrow blade assembly (1).

Dated this 12th day of June, 2015
,TagSPECI:FORM 2
THE PATENT ACT 1970
(39 of 1970)
&
The Patents Rules, 2003
COMPLETE SPECIFICATION
(See section 10 and rule 13)
1. TITLE OF THE INVENTION: A QUICK FIT MECHANISM FOR POWER HARROW BLADE
2. APPLICANT:
1. (a) NAME : Tirth Agro Technology Pvt. Ltd
(b) NATIONALITY : Indian
(c) ADDRESS : “SHAKTIMAN”, Survey No.-108/1,
Plot No. B, NH-27,
Nr. Bharudi Toll Plaza,
Bhunava, Gondal,
Rajkot– 360311.
Gujarat, India
3. PREMABLE TO THE DESCRIPTION
PROVISIONAL

The following specification describes the invention. þ COMPLETE

The following specification particularly describes the invention and the manner in which it is to be performed.

Field of Invention:

The present invention relates to A Quick Fit Mechanism for Power Harrow Blade to easily replacing the blade for minimize downtime and hence to increase the field efficiency.

Background of the Present Invention:

A number of different implements are known which incorporate weeding or cutting knives, sometimes known as sweeps or sweep blades, which in use operate below the surface of soil and which are design to severe the roots or stems of plants such as weed or trees as they travel through the soil. In one form the implements are decided tools and comprise rigid cutting blades. Alternatively, weeding implements can be in the form of the rod which may be supported from a toolbar trailed from a prime mover such as a tractor so as to extend transversely relative to the direction of travel and which can be driven to rotate about its longitudinal axis.

A convention power harrow comprises a transverse beam or full form which depends, at a number of spaced positions along the length of the beam pairs of soil working blades. The beam which is hollow accommodates a drive train which drives each blade pair about a vertical axis from the power take-off shaft of an agricultural tractor as the latter pulls the harrow across the land to be worked.

US 1299291 relates to a power harrow having a frame that is normally substan¬tially horizontal and at least one rotor. A rotatable shaft is journalled near one end in a bearing secured to the frame. The rotor is in driven connection with the other end of the shaft, and is rotated about a normally upright axis, so as to make contact with the soil to work it. A protective shield surrounds the bearing from below.

EP 1208729 discloses a blade assembly for a power harrow, the assembly comprising support means formed with two recesses, two harrow blades each having a support flange receivable in a respective recess, the support means carrying two retaining members each movable between an operative position in which the retaining member locks the corresponding blade in position in the corresponding recess, and an inoperative position allowing insertion of the flange into the recess or withdrawal of the flange from the recess, each retaining member being biased towards the operative position.

The soil working experienced huge amount of force while working in the field and have to replace frequently. The time taken in replacing the blades was too much in the earlier machine because of their complex mechanism. Hence, there is a need of an invention or a machine having a simple mechanism for replacing blades in a short time to overcome the above problems and to increase its efficiency by maintain the machine.

Object of the Present Invention:

The main object of the present invention is to provide a quick fit mechanism for power harrow blade having a power harrow blade assembly to easily replace blade for maintaining the machine.

Furthermore, object the present invention increases the field efficiency of the machine.

Summary of the Present Invention:

The present invention relates to a quick fit mechanism for power harrow blade having an easily replaceable power harrow blade assembly carried by a rotor to transmit power and rotation using the driving shafts and various spur gears to rotate the power harrow blade to cultivate the soil of land. The power harrow blade assembly comprises at least a pair of power harrow blades which are mounted at the fixed angle on the rotatable blade mount housing each one fastening with a double pin fastened in the holes of the power harrow blade and blade mount housing, the double pin having a single pin as a supporting part which is locked by a linchpin thereby inserting in the hole of single pin to hold the power harrow blade assembly. The assembly of the power harrow blades reduces maintenance time by quick releasing and/or attaching the power harrow blades and increases the field efficiency.

Brief Description of Drawings:

Fig. 1 is schematic diagram of a quick fit mechanism for power harrow blade.
Fig.2 is exploded view of a quick fit mechanism for power harrow blade.

Detailed Description of Present Invention:

Before explaining the present invention in detail, it is to be understood that the invention is not limited in its application to the details of the construction and arrangement of parts illustrated in the accompany drawings. The invention is capable of other embodiments, as depicted in different figures as described above and of being practiced or carried out in a variety of ways. It is to be understood that the phraseology and terminology employed herein is for the purpose of description and not of limitation.

The present invention relates to a quick fit mechanism for power harrow blade having a power harrow blade assembly (1) which is carried out by a rotor. As shown in fig. 1, the power harrow blade assembly (1) comprises at least a pair of sharp edge power harrow blades (2) for cultivating soil which are mounted on the rotatable sealed bearing blade mount housing (3) at fixed angle. Each power harrow blade (2) having two hole to be fastening by a u-shaped double pin (4). The double pin (4) having a hole in which the single pin (5) is fastened to provide a form-fitting connection and to hold it through a linchpin (6) by passing via hole of the single pin (5) thereby locking the power harrow blade assembly (1).

As shown in the fig. 2, the rotor comprising driving shafts (7, 10, 13) and various gears (8, 9, 11, 12, 14) which are connected to the power harrow blade assembly (1). The driving shafts having an input shaft (7) from where the power is transferred and a pair of spur gears (8, 9) to rotate the relative parts by transmitting large amount of power. The rotor also comprises an intermediate shaft (10) and main drive shaft (13) to pass the rotation and power and a pair of bevel gears ((pinion) 11, (crown) 12) which drive in a 90° angle towards the other gears.

Said power harrow blade (2) having sharp edge cultivating knife manufactured from high resistance forge steel material to optimise for lower power requirement to consume minimum diesel while it is in working position. The said power harrow blades (2) are long enough to till depths of any soil and improve its organic structure.

Said power harrow blade (2) is mounted on the blade mount housing (3) which is also manufactured form high resistance forge steel material and securely fixed with the spur gear (14) using the retaining members to rotate on its fixed axes.

The power harrow blade (2) and the blade mount housing (3) are connected through the u-shaped double pin (4), a single pin (5) and a linchpin (6). The double pin (4) is a fastening part of the present invention having two ends to insert in the mounting holes and a hole in the middle place at which the single pin (5) is attached. Said single pin (5) is also another mounting pin with a hole of the present invention to fix in the form-fitting manner to the power harrow blade (2) and locking though a linchpin (6) which holds various element of the said present invention.

The power harrow blade assembly (1) provides easily and quickly replaceable power harrow blades (2), so the power harrow blades (2) can no longer be implemented in conjunction with dirt and soil. To remove the power harrow blade (2), the linchpin (6) is removed from the single pin (5) by removal from said assembly (1). Said single pin (5) is a supporting part of the double pin (4) which is withdrawn from the corresponding slot after removing of the linchpin (6), so that the power harrow blade (2) is removed from the blade mount housing (3) and placed another power harrow blade (2) on it. To mount the power harrow blade (2), the blade is placed on the blade mount housing (3) and inserted the double pin (4) in the holes to be fastening the blade with the housing (3) and then double pin hole to be inserted into the single pin (5) and locked it with the linchpin (6).

In the working, the rotor transmits power through the input shaft (7) to the pair of spur gears (8, 9), which are reducing the speed and transmitting power to the bevel gears (pinion (11), crown (12)) which are changing the direction of the rotation at 90° through the intermediate shaft (10) to pass the rotation. After passing through the bevel gears (11, 12), the main drive shaft (13) pass the power to the spur gear (14) to rotate the rotatable blade mount housing (3). Hence, the power harrow blades (2) are rotating and cultivating land.

We Claim:

1. A quick fit mechanism for power harrow blade having a power harrow blade assembly (1) carried by a rotor through driving shafts (7, 10, 13) and gears (8, 9, 11, 12, 14) to transfer power and rotation for rotating the attached power harrow blade assembly (1); wherein said power harrow blade assembly (1) comprises at least a pair of power harrow blades (2) mounted on a rotatable blade mount housing (3) at fixed angle through the holes provided on said power harrow blade (2) and blade mount housing (3) to be fastening with a double pin (4), said double pin (4) having a hole wherein a single pin (5) to be treated as a supporting part which is locked by linchpin (6) thereby inserting in the hole of a single pin (5) to lock and to hold the power harrow blade assembly (1).

2. The quick fit mechanism for power harrow blade as claimed in claim 1, wherein the power harrow blade assembly (1) increases the field efficiency by providing easily replaceable power harrow blade assembly (1).

Dated this 12th day of June, 2015

Abstract
A Quick Fit Mechanism for Power Harrow Blade

The present invention relates to a quick fit mechanism for power harrow blade having an easily replaceable power harrow blade assembly (1) carried by a rotor to transmit power and rotation using the driving shafts (7, 10, 13) and various gears (8, 9, 11, 12, 14) to rotate the power harrow blade (2) to cultivate the soil of land. The power harrow blade assembly (1) comprises at least a pair of power harrow blades (2) which are mounted at the fixed angle on the rotatable blade mount housing (3) each one fastening with a double pin (4) fastened in the holes of the power harrow blade (2) and blade mount housing (3), the double pin (4) having a single pin (5) as a supporting part which is locked by a linchpin (6) thereby inserting in the hole of single pin (5) to hold the power harrow blade assembly (1). The assembly of the power harrow blades (1) reduces maintenance time by quick replacing the power harrow blades (2) and increases the field efficiency.