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Title:
A SEVEN-WHEEL TAKE UP MECHANISM FOR HANDLOOMS
Document Type and Number:
WIPO Patent Application WO/2016/120794
Kind Code:
A1
Abstract:
Exemplary embodiments of the present disclosure are directed towards a seven-wheel take up mechanism 100 designed for handlooms that eases the operation of the handlooms increasing the efficiency of the weavers. It also ensures uniform pick spacing and gives flexibility to set the desired pick spacing, as in power looms. The seven-wheel take up mechanism 100 is actuated by an actuating mechanism that swings a monkey tail lever 102, wherein the swinging motion engages a pulling pawl 108 with a ratchet wheel 110. The rotation of the ratchet wheel 110 drives the standard wheel 112 that further drives a pick wheel 114, a pick wheel pinion 116, a stud wheel 118, a stud wheel pinion 120 and a beam wheel 122. The beam wheel 122 is connected to a beam roller 204 that takes up the woven fabric 202 and passes it on to the cloth roller 208 through a nip roller 206.

Inventors:
JAMAKHANDI HAYAVADANA (IN)
Application Number:
PCT/IB2016/050393
Publication Date:
August 04, 2016
Filing Date:
January 27, 2016
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
JAMAKHANDI HAYAVADANA (IN)
International Classes:
D03D49/00
Foreign References:
IN326CHE2010A
IN548CHE2003A
Download PDF:
Claims:
CLAIMS

1. A take up mechanism 100 for a handloom comprising:

a monkey tail lever 102; a sley sword 106 connected to a bottom end of the monkey tail lever 102; a pulling pawl 108, wherein a first end of the pulling pawl 108 is connected to a top end of the monkey tail lever 102; a ratchet 110 engaged by a second end of the pulling pawl 108; a standard wheel 112 connected to the ratchet 110 through a first shaft 124; a pick wheel 114 driven by the standard wheel 112; a pick wheel pinion 116 connected to the pick wheel 114 through a second shaft 126; a stud wheel 118 driven by the pick wheel pinion 116; and a stud wheel pinion 120 connected to the stud wheel 118 through a third shaft 128; and a beam wheel 122 connected to a beam roller 204 and driven by the stud wheel pinion 120.

2. The take up mechanism 100 as in claim 1, wherein the beam roller 204 is rotatable relative to a nip roller 206 and a cloth roller 208.

3. A method for driving a take up mechanism 100 for a handloom comprising: actuating a sley sword 106 through an actuating means to swing a monkey tail lever 102,

engaging a pulling pawl 108 with a ratchet 110 through swinging of the monkey tail lever 102 to drive a standard wheel 112, wherein the standard wheel 112 rotates a pick wheel 114; driving a pick wheel pinion 116 through rotation of the pick wheel 114 to rotate a stud wheel 118, wherein the stud wheel 118 drives a stud wheel pinion 120; rotating a beam wheel 122 through driving of a stud wheel pinion 120; and taking up of a woven fabric 202 by a beam roller 204 connected to the beam wheel 122.

4. The method as in claim 3, wherein the woven fabric 202 from the beam roller 204 passes onto a nip roller 206 and then to a cloth roller 208.

Description:
A SEVEN- WHEEL TAKE UP MECHANISM FOR HANDLOOMS

TECHNICAL FIELD

[001] The present disclosure generally relates to the field of weaving. More particularly, the present disclosure relates to a seven-wheel take up mechanism designed for handlooms for taking up of the woven fabric.

BACKGROUND

[002] Handloom industry is mainly a cottage industry that is the lifeline of millions of people in developing countries. Though power loom weaving has largely replaced traditional weaving, there is still a considerable demand for hand woven fabrics due to

i. Certain special sorts of weaving like Ikat, Tie & Dye etc. are still woven on handlooms only. ii. Certain special varieties of Silk sarees like Pitambara used for Indian Marriages are still produced on handlooms

iii. Handlooms are generally made of eco-friendly materials and have a rich aesthetic and artistic appeal.

[003] In general, handlooms are provided with a direct cloth wind up roller with a manual system of rolling the woven fabric. This process of winding up the woven fabric onto the cloth roller is called the take up process. The manual take up process is intermittent and also cannot assure uniform pick spacing. The existing method of manual cloth wind up as and when the desired length of fabric is woven is supervised manually. This not only restricts the length of the woven fabric but also may vary from person to person due to perception and experience. The conventional handloom also does not have any method or control to get the desired picks per inch using some gear wheel.

[004] In the light of aforementioned discussion, there exists a need for modified handlooms that overcome the disadvantages of manual take up process. The present invention discloses a seven- wheel take up mechanism designed for handlooms that would ease the operation of the handloom thus improving the efficiency of the weavers and also ensure uniform pickup spacing thus improving the quality of the woven fabric.

BRIEF SUMMARY

[005] The following presents a simplified summary of the disclosure in order to provide a basic understanding to the reader. This summary is not an extensive overview of the disclosure and it does not identify key/critical elements of the invention or delineate the scope of the invention. Its sole purpose is to present some concepts disclosed herein in a simplified form as a prelude to the more detailed description that is presented later.

[006] Exemplary embodiments of the present disclosure are directed towards a seven-wheel take up mechanism comprising of: a monkey tail lever, wherein the monkey tail lever swings about a fulcrum at its centre; sley sword connected to a bottom end of the monkey tail lever; a pulling pawl, wherein a first end of the pulling pawl is connected to a top end of the monkey tail lever; a ratchet engaged by a second end of the pulling pawl; a standard wheel connected to the ratchet through a first shaft; a pick wheel driven by the standard wheel; a pick wheel pinion connected to the pick wheel through a second shaft; a stud wheel driven by the pick wheel pinion; a stud wheel pinion connected to the stud wheel through a third shaft; and a beam wheel connected to a beam roller and driven by the stud wheel pinion.

[007] Another exemplary aspect of the present subject matter is directed towards a method for driving a seven-wheel take up mechanism for a handloom, wherein the method comprises the following steps of : actuating a sley sword through an actuating means to swing a monkey tail lever about its fulcrum, engaging a pulling pawl with a ratchet through swinging of the monkey tail lever to drive a standard wheel, wherein the standard wheel rotates a pick wheel; driving a pick wheel pinion through rotation of the pick wheel to rotate a stud wheel, wherein the stud wheel drives a stud wheel pinion; rotating a beam wheel through driving of a stud wheel pinion, taking up of a woven fabric by a beam roller connected to the beam wheel. [008] It is an object of the present invention to disclose a seven-wheel take up mechanism for a handloom that would ease the operation of handlooms thus improving the efficiency of the weavers.

[009] It is another object of the present invention to disclose a seven-wheel take up mechanism for a handloom that would ensure uniform pickup spacing of the fabric thus improving the quality of the woven fabric.

[0010] It is another object of the present invention to disclose a seven-wheel take up mechanism for a handloom wherein the desired picks per inch can be set by a pick wheel, on par with a power loom.

BRIEF DESCRIPTION OF DRAWINGS

[0011] Other objects and advantages of the present invention will become apparent to those skilled in the art upon reading the following detailed description of the preferred embodiments, in conjunction with the accompanying drawings, wherein like reference numerals have been used to designate like elements, and wherein:

[0012] FIG. 1A represents a schematic illustration of a seven-wheel take up mechanism designed for handlooms.

[0013] FIG. IB represents a schematic illustration of the arrangement of the seven gear wheels in the seven-wheel take up mechanism with respect to each other.

[0014] FIG. 2 represents a schematic illustration of the arrangement of the beam roller, nip roller and cloth roller with respect to each other.

DETAILED DESCRIPTION [0015] It is to be understood that the present disclosure is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. The present disclosure is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.

[0016] The use of "including", "comprising" or "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. The terms "a" and "an" herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item. Further, the use of terms "first", "second", and "third", and the like, herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.

[0017] According to a non limiting exemplary embodiment of the present disclosure, a seven- wheel take up mechanism designed for handlooms and comprising of seven gear wheels is disclosed.

[0018] In accordance with a non limiting exemplary embodiment of the present subject matter, a modified handloom with a seven- wheel take up mechanism is disclosed.

[0019] Referring to FIG. 1A, it represents a schematic illustration of a seven-wheel take up mechanism 100 designed for handlooms.

[0020] Referring to FIG. IB, it represents a schematic illustration of the arrangement of the seven gear wheels in the seven-wheel take up mechanism with respect to each other.

[0021] Referring to FIG. 2, it represents a schematic illustration of the arrangement of the beam roller, nip roller and cloth roller 200 with respect to each other. [0022] According to a non limiting exemplary embodiment of the present disclosure, a seven- wheel take up mechanism 100 for a handloom is disclosed. The seven-wheel take up mechanism 100 comprises of: a monkey tail lever 102, wherein the monkey tail lever 102 swings about a fulcrum 104 at its centre; a sley sword 106 connected to a bottom end of the monkey tail lever 102; a pulling pawl 108, wherein a first end of the pulling pawl 108 is connected to a top end of the monkey tail lever 102; a ratchet 110 engaged by a second end of the pulling pawl 108; a standard wheel 112 connected to the ratchet through a first shaft 124; a pick wheel 114 driven by the standard wheel 112; a pick wheel pinion 116 connected to the pick wheel 114 through a second shaft 126; a stud wheel 118 driven by the pick wheel pinion 116; a stud wheel pinion 120 connected to the stud wheel 118 through a third shaft 128; and a beam wheel 122 connected to a beam roller 204 and driven by the stud wheel pinion 120.

[0023] In accordance with a non limiting exemplary embodiment of the present disclosure, a seven-wheel take up mechanism 100 is disclosed, wherein the beam roller 204 is rotatable relative to a nip roller 206 and a cloth roller 208. The nip roller 206 is positioned above the beam roller 204 abutting it. The cloth roller 208 is placed below the beam roller 204 abutting it.

[0024] According to a non limiting exemplary embodiment of the present disclosure, the beam roller 204 is an emery beam roller, wherein it frictionally drives the cloth roller 208.

[0025] According to a non limiting exemplary embodiment of the present disclosure, a method for driving a seven-wheel take up mechanism 100 for a handloom is disclosed, wherein the method comprises the following steps of : actuating a sley sword 106 through an actuating means to swing a monkey tail lever 102 about its fulcrum 104, engaging a pulling pawl 108 with a ratchet 110 through swinging of the monkey tail lever 102 to drive a standard wheel 112, wherein the standard wheel 112 rotates a pick wheel 114; driving a pick wheel pinion 116 through rotation of the pick wheel 114 to rotate a stud wheel 118, wherein the stud wheel 118 drives a stud wheel pinion 120; rotating a beam wheel 122 through driving of a stud wheel pinion 120, taking up of a woven fabric 202 by a beam roller 204 connected to the beam wheel 122. [0026] In accordance with a non limiting exemplary embodiment of the present disclosure, a method for driving a seven-wheel take up mechanism 100 is disclosed, wherein the woven fabric 202 from the beam roller 204 passes onto a nip roller 206 and then to a cloth roller 208.

[0027] According to a non limiting exemplary embodiment of the present disclosure, the required number of picks per inch can be set/adjusted through the pick wheel 114, like in power looms. This ensures uniform pick spacing and thus uniform cover factor of the fabric 202.

[0028] Although the present disclosure has been described in terms of certain preferred embodiments and illustrations thereof, other embodiments and modifications to preferred embodiments may be possible that are within the principles and spirit of the invention. The above descriptions and figures are therefore to be regarded as illustrative and not restrictive.

[0029] Thus the scope of the present disclosure is defined by the appended claims and includes both combinations and sub combinations of the various features described herein above as well as variations and modifications thereof, which would occur to persons skilled in the art upon reading the foregoing description.