Title of Invention	A GENTLE COVER CLOSING MECHANISM FOR A POSITIVE CLEARER ON A SPEED FRAME, FLY FRAME OR ROVING FRAME USED-IN YARN SPINNING MILLS
Abstract	A gentle cover closing mechanism for a positive clearer on a speed fitune, fly fortune or roving frame, comprising a piston reciprocable disposed within a cylinder and loaded with a compression spring, the cylinder being closed at one end with an superstore at the other, the piston protruding out of the said superstore and the cylinder being constituted by two parts in moveable engagement with each other for partially compressing the spring to a predetermined extent; a traction head provided for the producing part of the piston, and means for fixing the said traction head and the said cylinder to the clearer cover and to a rigid support, such as, the arm bracket.

Title of Invention

A GENTLE COVER CLOSING MECHANISM FOR A POSITIVE CLEARER ON A SPEED FRAME, FLY FRAME OR ROVING FRAME USED-IN YARN SPINNING MILLS

Abstract

A gentle cover closing mechanism for a positive clearer on a speed fitune, fly fortune or roving frame, comprising a piston reciprocable disposed within a cylinder and loaded with a compression spring, the cylinder being closed at one end with an superstore at the other, the piston protruding out of the said superstore and the cylinder being constituted by two parts in moveable engagement with each other for partially compressing the spring to a predetermined extent; a traction head provided for the producing part of the piston, and means for fixing the said traction head and the said cylinder to the clearer cover and to a rigid support, such as, the arm bracket.

Full Text	This invention relate* to a gentle cover closing mechanism for a positive clearer on a speed frame, fly frame or roving frame used in yarn spinning mills. The positive clearer has a heavy metallic cover which is closed during running and opened, for maintenance, during standstill condition of the said frame. Closing of the cover Involves risk of injury to the operator, since the heavy cover falls down with considerable force, under gravity. So also, opening the cover, once closed, is also a difficult operation, especially when the cover opens out to its extreme position, whence it will be difficult to close it once again, when necessary. Proposals have been made to overcome the above mentioned drawbacks. For instance, the use of a tensloner spring mechanism is known to the art. In this mechanism, a tensloner spring is provided for the cover of a positive clearer, the spring having a tension adjuster operable by tightening or loosening a nut. The spring and adjuster are enclosed by a plastic tube. The disadvantages of the known tensloner spring mechanisms are s The operation is not smooth and efficient. (ii> The end of the tensloner spring is fixed to the cover of the positive clearer or to some related element by a hook, while the other end of the spring is fixed to the spring adjuster by another hacks. There is thus the possibility of these hooks giving May during repeated operation. and related components, so much so that there is the possibility of fluff and other foreign matter accumulating within it. This invention, on the other hand, proposes a mechanism which does away with the foregoing disadvantages. In the mechanism proposed herein (i) A compression spring is incorporated. The spring action is thus more positive than a pensioner spring. The piston itself is not fixed to the spring, so much so that the spring action is uninhibited. (iii) No hooks are employed. collar and body arrangement which creates a direct axial thrust on the spring. cover during manufacture. The erector has thus only one fastener to fix at the other end. (vi) Installation is quick and single, using two fasteners. The compression spring and related components are fully insulated against flies, fluff and other foreign matter. (viii) Virtually no maintenance is involved. especially as the compression spring acts as a buffer while closing and opening of the clearer cover, furnishing a gentle closing and opening action. Various other features of this invention will be apparent from the following further description thereof given hereunder. The gentle cover closing mechanism for a positive clearer on a speed frame, fly frame or roving frame, used in yarn spinning mills, according to this invention, comprises a piston reciprocably disposed within a cylinder and loaded with a compression spring, the cylinder being closed at one end with an aperture at the other, the piston protruding out of the said aperture and the cylinder being constituted by two parts in moveable engagement with each other, for partially compressing the spring to a predetermined extent\| a traction head provided for the protruding part of the the aid traction head and the Raid cylinder to the clearer cover and to s rigid support, herein. Fig. 1 illustrating the embodiment fixed to the clearer cover and to the arm bracket. Fig. 2 illustrating the assembly of the said embodiment. and Fig. 3 illustrating two specimens of the embodiment flowed to the clearer cover and to the arm bracket. A piston P is reciprocafoly disposed within a cylinder C. The piston is loaded with a compression spring S which surrounds the piston but is not fixed to it. The cylinder C is closed at one end A with an aperture B at the other, the piston P protruding out of the said aperture at ,T. The cylinder C is composed of two parts, a body CI and a collar C2 in moveable engagement with each other. One of possible forms of moveable engagement is a threaded engagement between the body CI and the collar C2. Thus, the collar C2 can be loosened or tightened with to the body CI, to the demised extent- As already stated, the spring S is not fixed to the piston P, but merely surround it. However, the spring rests between a flange F on the piston and the collar C2, whereby tightening or loosening the collar C2 compresses or decompresses the spring S to increase or decrease the compressive force, offered by the spring, to predetermined values. When the collar C2 is fully tightened over the body CI, the spring S will not be fully compressed, because full compression of the spring will not leave any scope for action during operation. The part of the piston P protruding out of the aperture B is provided with a traction head H. One of the possible forms of attaching the traction head H to the piston P is by threadedly engaging the two together. Means are provided for fixing the traction head H to the clearer cover M and for filing the cylinder body to a rigid support e.g. the arm bracket L. One of possible forms of such means comprise fasteners D and E. The fastener D on the traction head H will, preferably, be fastened to the clearer cover, during manufacture, leaving the fastener E to be fastened to the arm bracket during erection. A» the heavy clearer cover 1 being closed, th» downward thrust of the cover transferred to the traction head H (Fig 3) which the P to be drawn outwardly with respect to the cylinder C, to the precompresmed spring 8 further and thus bring about a gentle cloning action of the cover. The reverse opening action, pushes the piston P inwardly with respect to the cylinder C, to decompress the S and bring about a gentle opening action. The doming action and the opening action are thus smooth, positive and gentle. The term* and expressions in this specification® are of description and not of limitation there being no Intention in the use of such terms and expressions of excluding any equivalents of the features illustrated and described, but it is understood that various other embodiments of the mechanism proposed herein are possible without departing from the scoop© and ambit of this invention. I Claim t i. A gentle cover closing mechanism for a positive clearer on a speed frame, fly frame or roving frame, used in yarn spinning mills, comprising a piston reciprocally disposed

Full Text

This invention relate* to a gentle cover closing mechanism for a positive clearer on a speed frame, fly frame or roving frame used in yarn spinning mills.
The positive clearer has a heavy metallic cover which is closed during running and opened, for maintenance, during standstill condition of the said frame.
Closing of the cover Involves risk of injury to the operator, since the heavy cover falls down with considerable force, under gravity. So also, opening the cover, once closed, is also a difficult operation, especially when the cover opens out to its extreme position, whence it will be difficult to close it once again, when necessary. Proposals have been made to overcome the above mentioned drawbacks. For instance, the use of a tensloner spring mechanism is known to the art. In this mechanism, a tensloner spring is provided for the cover of a positive clearer, the spring having a tension adjuster operable by tightening or loosening a nut. The spring and adjuster are enclosed by a plastic tube.
The disadvantages of the known tensloner spring mechanisms
are s
The operation is not smooth and efficient.
(ii> The end of the tensloner spring is fixed to the cover

of the positive clearer or to some related element by a
hook, while the other end of the spring is fixed to the
spring adjuster by another hacks. There is thus the
possibility of these hooks giving May during repeated
operation.
and related components, so much so that there is the
possibility of fluff and other foreign matter accumulating
within it.
This invention, on the other hand, proposes a mechanism
which does away with the foregoing disadvantages.
In the mechanism proposed herein
(i) A compression spring is incorporated. The spring action
is thus more positive than a pensioner spring.
The piston itself is not fixed to the spring, so much so
that the spring action is uninhibited.
(iii) No hooks are employed.
collar and body arrangement which creates a direct axial
thrust on the spring.
cover during manufacture. The erector has thus only one

fastener to fix at the other end.
(vi) Installation is quick and single, using two fasteners.
The compression spring and related components are
fully insulated against flies, fluff and other foreign
matter.
(viii) Virtually no maintenance is involved.
especially as the compression spring acts as a buffer while
closing and opening of the clearer cover, furnishing a
gentle closing and opening action.
Various other features of this invention will be apparent from the following further description thereof given hereunder.
The gentle cover closing mechanism for a positive clearer on a speed frame, fly frame or roving frame, used in yarn spinning mills, according to this invention, comprises a piston reciprocably disposed within a cylinder and loaded with a compression spring, the cylinder being closed at one end with an aperture at the other, the piston protruding out of the said aperture and the cylinder being constituted by two parts in moveable engagement with each other, for partially compressing the spring to a predetermined extent|

a traction head provided for the protruding part of the
the aid traction head and the
Raid cylinder to the clearer cover and to s rigid support,

herein.
Fig. 1 illustrating the embodiment fixed to the clearer
cover and to the arm bracket.
Fig. 2 illustrating the assembly of the said embodiment.
and Fig. 3 illustrating two specimens of the embodiment flowed to the clearer cover and to the arm bracket.
A piston P is reciprocafoly disposed within a cylinder C. The piston is loaded with a compression spring S which surrounds the piston but is not fixed to it.
The cylinder C is closed at one end A with an aperture B at the other, the piston P protruding out of the said aperture at ,T.
The cylinder C is composed of two parts, a body CI and a collar C2 in moveable engagement with each other. One of possible forms of moveable engagement is a threaded engagement between the body CI and the collar C2. Thus, the

collar C2 can be loosened or tightened with to the
body CI, to the demised extent-
As already stated, the spring S is not fixed to the piston
P, but merely surround it.
However, the spring rests between a flange F on the piston
and the collar C2, whereby tightening or loosening the
collar C2 compresses or decompresses the spring S to
increase or decrease the compressive force, offered by the
spring, to predetermined values.
When the collar C2 is fully tightened over the body CI, the
spring S will not be fully compressed, because full
compression of the spring will not leave any scope for
action during operation.
The part of the piston P protruding out of the aperture B is
provided with a traction head H. One of the possible forms
of attaching the traction head H to the piston P is by
threadedly engaging the two together.
Means are provided for fixing the traction head H to the
clearer cover M and for filing the cylinder body to a
rigid support e.g. the arm bracket L.
One of possible forms of such means comprise fasteners D and
E. The fastener D on the traction head H will, preferably,
be fastened to the clearer cover, during manufacture,
leaving the fastener E to be fastened to the arm bracket

during erection.
A» the heavy clearer cover 1 being closed, th» downward thrust of the cover transferred to the traction head H (Fig 3) which the P to be drawn outwardly with respect to the cylinder C, to the precompresmed spring 8 further and thus bring about a gentle cloning action of the cover. The reverse opening action, pushes the piston P inwardly with respect to the cylinder C, to decompress the S and bring about a gentle opening action. The doming action and the opening action are thus smooth, positive and gentle.
The term* and expressions in this specification® are of description and not of limitation there being no Intention in the use of such terms and expressions of excluding any equivalents of the features illustrated and described, but it is understood that various other embodiments of the mechanism proposed herein are possible without departing from the scoop© and ambit of this invention.
I Claim t
i. A gentle cover closing mechanism for a positive clearer on a speed frame, fly frame or roving frame, used in yarn spinning mills, comprising a piston reciprocally disposed

Documents:

0703-mas-1996 abstract.pdf

0703-mas-1996 claims duplicate.pdf

0703-mas-1996 claims.pdf

0703-mas-1996 correspondence -others.pdf

0703-mas-1996 correspondence -po.pdf

0703-mas-1996 description (complete).pdf

0703-mas-1996 description (completet) duplicate.pdf

0703-mas-1996 drawings.pdf

0703-mas-1996 form-1.pdf

0703-mas-1996 form-26.pdf

0703-mas-1996 form-9.pdf

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Patent Number

193603

Indian Patent Application Number

703/MAS/1996

PG Journal Number

30/2009

Publication Date

24-Jul-2009

Grant Date

Date of Filing

30-Apr-1996

Name of Patentee

RAJAGOPAL VASANTHAKUMAR

Applicant Address

INDIAN NATIONAL OF KARPAGAM INDUSTRIES (P) LTD; K-5 SIDCO INDUSTRIAL ESTATE, COIMBATORE 641 021

Inventors:

#	Inventor's Name	Inventor's Address
1	RAJAGOPAL VASANTHAKUMAR	INDIAN NATIONAL OF KARPAGAM INDUSTRIES (P) LTD; K-5 SIDCO INDUSTRIAL ESTATE, COIMBATORE 641 021

PCT International Classification Number

DO1H 11/00

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1			NA