CA1081983A - Apparatus for terrying yarn - Google Patents
Apparatus for terrying yarnInfo
- Publication number
- CA1081983A CA1081983A CA321,564A CA321564A CA1081983A CA 1081983 A CA1081983 A CA 1081983A CA 321564 A CA321564 A CA 321564A CA 1081983 A CA1081983 A CA 1081983A
- Authority
- CA
- Canada
- Prior art keywords
- jacks
- loops
- dial
- extended
- needles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Knitting Machines (AREA)
Abstract
APPARATUS FOR TERRYING YARN
ABSTRACT
A circular ladies hosiery knitting machine is provided having a conventional rotatable needly cylinder and dial. The dial includes radially movable transfer jacks which, when fully extended, cooperate with the needles to form loops on the jacks. A
selectively operable device positions a de-looper element in the path of loops carried by the transfer jacks whereby the loops are lifted out of engagement with the jacks without the jacks having to be re-tracted.
ABSTRACT
A circular ladies hosiery knitting machine is provided having a conventional rotatable needly cylinder and dial. The dial includes radially movable transfer jacks which, when fully extended, cooperate with the needles to form loops on the jacks. A
selectively operable device positions a de-looper element in the path of loops carried by the transfer jacks whereby the loops are lifted out of engagement with the jacks without the jacks having to be re-tracted.
Description
108~3 APPARATUS FOR TERRYI~G Y~R~
BACKGROUND OF THE I~VE~TIO~
The present invention relates to an improvement in circular ladies hosiery knitting machinery adapted to simultaneously knit yarn and introduce terry to the knitted product.
Techniques and equipment for terrying a fabric produced by circular knitting machines are well known.
¦ Examples of such arrangements are those disclosed in ~ 10 United States Patents 3,107,509, issued to Glen R.
;¦ ~armer on October 22, 1963 and 4,010,626, which was . .
I granted to Tibor Feher on March 8, 1977.
¦` In each of the two patents just identified, a ¦ rotatable dial is employed which is coaxial with, and ,.
-j 15 operatively related to, a rotatable needle cylinder.
The cylinder houses needles which are arranged for up-1 and-down motion as the cylinder rotates. The reci-:! procating needles engage yarn so as to knit the fabric.
The dial supports a plurality of radially arranged 20 loop-forming elements which are selectively extended ~ ~
to a position proximate the path of reciprocation of ~`
the needles whereby during downward movement of the ~ needles, a length of yarn is engaged and is drawn into ;~
-l engagement with the elements. Continued downward needle movement results in loops of yarn being formed.
The elements are configured such that upon their re-traction into the dial, the loops are released, thereby forming terry in the knitted fabric.
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~ 9~ 3 During fabrication of a product such as a pantyhose with knitted waistband, it is alqo desirable to form loops which are knitted directly into the j fabric rather than serving as terry. This requires , 5 that a previously formed loop be positioned in the path o needle movement so that the loop is engaged by the needle and drawn into the next course of fabric being knitted.
Such a procedure is not possible with terrying arrangements of the type disclosed, for example, in U.S. Patent 3,107,509 inasmuch as the verge bit has essentially a smooth, straight upper surface. Once a 1 loop is formed and the verge bit is withdrawn prior to ¦ being re-extended for introduction of the loop to the next course, the verge bit withdrawal results in the loop slipping off the end of the verge bit.
I One of the embodiments disclosed in U.S. Patent i 4,010,626 attempts to solve this problem by utilizing a pair of loop-forming elements having been modified, one with the tip completely cut off and the other one, I the tip modified. When terry is to be formed, full ¦ retraction of the pairs of loop-forming elements into the dial causes the loop to be removed from the jacks.
With such an arrangement, the loop-forming element can only do terrying, it cannot do the job of a regular transfer jack making a knitted waistband on ladies pantyhose.
; It is apparent that the arrangement of U.S.
~ Patent 4,310,626 described in the preceding paragraph i, 30 has important shortcomings. For example, such a device - requires a pair of loop-forming elements and complicated ~'' .
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~81g~3 camming is necessary to provide both partial and full withdrawal of the loop-forming elements.
SUMMARY OF THE INVENTION
The present invention provides a simplified arrangement which permits tarry loops to be formed without any modification of conventional transfer jacks and without the necessity of providing means for select-ively obtaining partial and complete withdrawal of the transfer jacks. More particularly, a de-looper is pro-vided which is selectively moved into the path of loopsformed on extended transfer jacks to lift the loops therefrom when terrying is desired. In the case where it is desired that the loops formed by the transfer jacks be knitted into a subsequent course of fabric, the de-looper is removed from the path of travel of the loops. The transfer jacks then can be withdrawn ¦ and re-extended without the loops carried by the jacks being lost. This permits the loops to be knitted into `l a subsequent course of the fabric. When this operation is completed, the transfer jacks can be cleared for terrying by moving the de-looper into the path of the travel of the loops.
' With the arrangement just described, it is pos-- sible to double knit a waistband in a ladies pantyhose and then transfer to conventional knitting. This results from the fact that the ba~ic knitting machine's transfer ~ I
`~'' loops are not altered as in the case of the loop-forming j~ elements and verge bits disclosed in U.S. Patents ~ 4,010,626 and 3,107,509 respectively.
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The invention now will be described in further detail with reference to the accompanying drawings wherein:
FIGURE 1 is an elevational view, partially tn section, illustrating portions of a circular ladies hosiery knitting machine incorporating a de-looper according to the present invention;
FIGURE 2 is a top plan of a dial element shown in Figure l; and FIGURE 3 is a diagrammatic view illustrating a de-looping operation utilizing the structure shown in Figure 1.
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'~ ' ' ' ' ' '~ ' ' ' ~ ' , Referring first to Figures 1 and 2, portions of a conventional circular ladies hosiery knitting machine are illustrated. A typical machine with which the present invention may be used is the Mark IV model 5 produced by Textile Machine works of Wyomissing, Pennsylvania, the successor of which is ~orth American Rockwell Corporation of Pittsburgh, Pennsylvania. How-ever, it will be apparent that the invention can be ; utilized on any type of ladies hosiery knitting machine.
lO For convenience of illustration, only those portions of the machine necessary to explain the operation of ! the invention have been shown.
The circular knitting machine includes a needle cylinder 10 and a dial 12. These elements are oper-15 atively related to rotate simultaneously about the axis ?
of the cylinder.
l ~ The needle cylinder carries conventional latch-`l type knit~ing needles 14 which are vertically recipro-cated in accordance with a cam system (not shown) in order 20 to engage yarn and knit the fabric. Since the manner of feeding yarn and performing the necessary steps to achieve a knit are well ~nown, the structure required for this operation has been omitted from the drawings.
The rotatable dial 12 includes a plurality of 25 radially extending slots 16 only a few of which are shown ;
in Figure 2. The slots 16 receive respective conventional transfer jacks 18 which can be seen in Figure l. Each jack includes at one end thereof a curved tip 20 which projects beyond dial 12, and a vertically extending pro-~` 30 jection 22 is provided intermediate the ends of the jack.
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A stationary dial cap 24 is positioned above the dial 12. Cap 24 includes a groove 26 which receives the projections 22 of the jacks. The groove 26 is ¦ formed in a configuration such that as the dial 12 ro-tates with respect to cap 24, the transfer jack pro-jections 22 follow the groove to cause the jacks to move within their slots in a plarie normal to the direction of movement of needles 14. When the jacks are fully ex-tended in this manner, their tips 20 are positioned in operative relationship with needles 14. More parti-cularly, each extended jack tip is located in a space between a pair of associated needles whereby when the latter are elevated above the transfer jack to catch yarn and then are lowered past the jack, the yarn carried by the needles is brought into engagement with the cor-j responding jack tip to form a loop.
A stationary sinker bed assembly 28 is posi-tioned below dial 12 and is positioned in operative rela-tionship with the needles 14 at a location outside the ~l 20 cylindrical space defined by the array of needles. The -' sinker assembly supports a number of elements employed in the knitting operation. ~Iowever, since such elements are conventional, they have only been generally illu-strated, and no discussion thereof is necessary. Sinker ` 25 bed assembly 28 additionally supports a de-looper arrange-ment. This de-looper includes a stationary block 30 and a sliding block assembly 32 operatively related to block 30. More particularly, block 30 includes a longitu-dinally extending channel 34 formed with a shoulder ' 30 portion 36. Block assembly 32 is provided with a .
.
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;33 longitudinally extending projecting portion 38 formed to be slidably received within channel 34. Inward movement of assembly 32 is limited by the engagement of portion 38 with shoulder 36.
The block assembly 32 includes a de-looper element 40 having an arm portion 42 which projects beyond block 30. As can be apprecia-ted from Figure 3, an upwardly inclined loop-engaging portion 44 is pro-vided at the projecting end of arm 42. Portion 44 in-cludes a curved edge surface 46 which is configured so as to be able to lift a loop from a transfer jack when ! such a loop is brought into engagement with edge 46 1 and the arm 42 is fully extended, as shown in Figure l.
I
The loop-lifting operation itself can be understood by reference to Figure 3.
.1 ':
When the arm 42 is retracted to the point where -portion 38 engages shoulder 36, portion 44 of the de-I looper is positioned outside the loci of movement of .
the vertically reciprocating needles and beyond the maximum extension of the tips 20 of the transfer jacks.
Conse~uently, no interference with the de-looper can ,..
. occur as the needles and jacks move with respect to the ~tationary de-looper.
During those periods when loops are formed on 25 the transfer jacks in the manner previously described, ~
- the elevation of the need~es and extension of the trans- ~: :
~ fer jacks are programmed such that the loops are produced ; at-a location angularly displaced from the fixed position of the developer 40. When it is desired to form terry ~ :
from the loops, the transfer jacks remain extended after `. , .
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the loops are formed thereon, and the arm 42 of the de-looper 40 is extended prior to the arrival of the loops at the de-looping position. The de-looper may be extended and withdrawn in a variety of ways. For example, this operation may be accomplished by select-ively energizing a solenoid (not shown) which is joined to a projecting element 48 secured to block assembly 32 whereby solenoid actuation is translated through element 48 to sliding movement of the assembly with respect to block 30 en the de-looper arm 42 is fully extended, edge 46 of the inclined portion 44 describes a path from I a position below and inwardly of the circular locus of ¦ ~ the extended transfer jack tip 20 to a position above ;~ -and outwardly of this locus. The edge 46 has a direc-tional component extending in the direction of movement of the transfer jack as the latter moves past the de-j looper. Consequently, as can be appreciated from Figure ~;
3, the loops carried by the extended transfer jacks are lifted and separated from the tips 20 by edge 46 as the ~, jack passes over the de-looper. Thus, terrying is ac-complished without withdrawing the transfer jacks as is ~ required ~y the arrangements disclosed in U.S. Patents -' 3,107,509 and 4~010~626~ The jacks remain extended to 25 produce loops on the next course(s) of fabric whereby a terry patch is knitted. The terrying operation is terminated by withdrawal of the de-looper arm 42r I In the case where the loops formed on the trans-....
fer jacks are to be knitted into a subsequent course of the item being produced, the jac~s are retracted. The J
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08~3 curved tips 20 of the jacks permit the loops to be retained by the jacks until the jacks again are ex-tended into operative relationship with knitting needles.
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BACKGROUND OF THE I~VE~TIO~
The present invention relates to an improvement in circular ladies hosiery knitting machinery adapted to simultaneously knit yarn and introduce terry to the knitted product.
Techniques and equipment for terrying a fabric produced by circular knitting machines are well known.
¦ Examples of such arrangements are those disclosed in ~ 10 United States Patents 3,107,509, issued to Glen R.
;¦ ~armer on October 22, 1963 and 4,010,626, which was . .
I granted to Tibor Feher on March 8, 1977.
¦` In each of the two patents just identified, a ¦ rotatable dial is employed which is coaxial with, and ,.
-j 15 operatively related to, a rotatable needle cylinder.
The cylinder houses needles which are arranged for up-1 and-down motion as the cylinder rotates. The reci-:! procating needles engage yarn so as to knit the fabric.
The dial supports a plurality of radially arranged 20 loop-forming elements which are selectively extended ~ ~
to a position proximate the path of reciprocation of ~`
the needles whereby during downward movement of the ~ needles, a length of yarn is engaged and is drawn into ;~
-l engagement with the elements. Continued downward needle movement results in loops of yarn being formed.
The elements are configured such that upon their re-traction into the dial, the loops are released, thereby forming terry in the knitted fabric.
, .,,,1 ~ , ., -~, , ~,'.
~.
~ 9~ 3 During fabrication of a product such as a pantyhose with knitted waistband, it is alqo desirable to form loops which are knitted directly into the j fabric rather than serving as terry. This requires , 5 that a previously formed loop be positioned in the path o needle movement so that the loop is engaged by the needle and drawn into the next course of fabric being knitted.
Such a procedure is not possible with terrying arrangements of the type disclosed, for example, in U.S. Patent 3,107,509 inasmuch as the verge bit has essentially a smooth, straight upper surface. Once a 1 loop is formed and the verge bit is withdrawn prior to ¦ being re-extended for introduction of the loop to the next course, the verge bit withdrawal results in the loop slipping off the end of the verge bit.
I One of the embodiments disclosed in U.S. Patent i 4,010,626 attempts to solve this problem by utilizing a pair of loop-forming elements having been modified, one with the tip completely cut off and the other one, I the tip modified. When terry is to be formed, full ¦ retraction of the pairs of loop-forming elements into the dial causes the loop to be removed from the jacks.
With such an arrangement, the loop-forming element can only do terrying, it cannot do the job of a regular transfer jack making a knitted waistband on ladies pantyhose.
; It is apparent that the arrangement of U.S.
~ Patent 4,310,626 described in the preceding paragraph i, 30 has important shortcomings. For example, such a device - requires a pair of loop-forming elements and complicated ~'' .
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,: : : ., . ~:
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. ,::: . .
:,:. . . .
,' , .
~81g~3 camming is necessary to provide both partial and full withdrawal of the loop-forming elements.
SUMMARY OF THE INVENTION
The present invention provides a simplified arrangement which permits tarry loops to be formed without any modification of conventional transfer jacks and without the necessity of providing means for select-ively obtaining partial and complete withdrawal of the transfer jacks. More particularly, a de-looper is pro-vided which is selectively moved into the path of loopsformed on extended transfer jacks to lift the loops therefrom when terrying is desired. In the case where it is desired that the loops formed by the transfer jacks be knitted into a subsequent course of fabric, the de-looper is removed from the path of travel of the loops. The transfer jacks then can be withdrawn ¦ and re-extended without the loops carried by the jacks being lost. This permits the loops to be knitted into `l a subsequent course of the fabric. When this operation is completed, the transfer jacks can be cleared for terrying by moving the de-looper into the path of the travel of the loops.
' With the arrangement just described, it is pos-- sible to double knit a waistband in a ladies pantyhose and then transfer to conventional knitting. This results from the fact that the ba~ic knitting machine's transfer ~ I
`~'' loops are not altered as in the case of the loop-forming j~ elements and verge bits disclosed in U.S. Patents ~ 4,010,626 and 3,107,509 respectively.
. . :
.: . : : , . . . . .
,: ' , . , , , ' ' : .- .' , ~ ,' .:., ' ''' ,' ,' ' .'-DETAILED DESCRIPTION OF T.T.-IE I~VE~TION
The invention now will be described in further detail with reference to the accompanying drawings wherein:
FIGURE 1 is an elevational view, partially tn section, illustrating portions of a circular ladies hosiery knitting machine incorporating a de-looper according to the present invention;
FIGURE 2 is a top plan of a dial element shown in Figure l; and FIGURE 3 is a diagrammatic view illustrating a de-looping operation utilizing the structure shown in Figure 1.
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'. '~"' ' " . . ,. , .' ' . ' ' ' , '. '.' ' ' , , ~, " ~ . " . ' , ' ' ' . . , ' ~ , ' ' ' ' ', ' ~ ' ' . ' ' ' '`''. . ~ ' ' ' , ~ .
'~ ' ' ' ' ' '~ ' ' ' ~ ' , Referring first to Figures 1 and 2, portions of a conventional circular ladies hosiery knitting machine are illustrated. A typical machine with which the present invention may be used is the Mark IV model 5 produced by Textile Machine works of Wyomissing, Pennsylvania, the successor of which is ~orth American Rockwell Corporation of Pittsburgh, Pennsylvania. How-ever, it will be apparent that the invention can be ; utilized on any type of ladies hosiery knitting machine.
lO For convenience of illustration, only those portions of the machine necessary to explain the operation of ! the invention have been shown.
The circular knitting machine includes a needle cylinder 10 and a dial 12. These elements are oper-15 atively related to rotate simultaneously about the axis ?
of the cylinder.
l ~ The needle cylinder carries conventional latch-`l type knit~ing needles 14 which are vertically recipro-cated in accordance with a cam system (not shown) in order 20 to engage yarn and knit the fabric. Since the manner of feeding yarn and performing the necessary steps to achieve a knit are well ~nown, the structure required for this operation has been omitted from the drawings.
The rotatable dial 12 includes a plurality of 25 radially extending slots 16 only a few of which are shown ;
in Figure 2. The slots 16 receive respective conventional transfer jacks 18 which can be seen in Figure l. Each jack includes at one end thereof a curved tip 20 which projects beyond dial 12, and a vertically extending pro-~` 30 jection 22 is provided intermediate the ends of the jack.
; .
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,. .
A stationary dial cap 24 is positioned above the dial 12. Cap 24 includes a groove 26 which receives the projections 22 of the jacks. The groove 26 is ¦ formed in a configuration such that as the dial 12 ro-tates with respect to cap 24, the transfer jack pro-jections 22 follow the groove to cause the jacks to move within their slots in a plarie normal to the direction of movement of needles 14. When the jacks are fully ex-tended in this manner, their tips 20 are positioned in operative relationship with needles 14. More parti-cularly, each extended jack tip is located in a space between a pair of associated needles whereby when the latter are elevated above the transfer jack to catch yarn and then are lowered past the jack, the yarn carried by the needles is brought into engagement with the cor-j responding jack tip to form a loop.
A stationary sinker bed assembly 28 is posi-tioned below dial 12 and is positioned in operative rela-tionship with the needles 14 at a location outside the ~l 20 cylindrical space defined by the array of needles. The -' sinker assembly supports a number of elements employed in the knitting operation. ~Iowever, since such elements are conventional, they have only been generally illu-strated, and no discussion thereof is necessary. Sinker ` 25 bed assembly 28 additionally supports a de-looper arrange-ment. This de-looper includes a stationary block 30 and a sliding block assembly 32 operatively related to block 30. More particularly, block 30 includes a longitu-dinally extending channel 34 formed with a shoulder ' 30 portion 36. Block assembly 32 is provided with a .
.
.
, . . - . : ~ . .. ~ . - . ,, :. . , .. . . .
: , : : , . , .
;33 longitudinally extending projecting portion 38 formed to be slidably received within channel 34. Inward movement of assembly 32 is limited by the engagement of portion 38 with shoulder 36.
The block assembly 32 includes a de-looper element 40 having an arm portion 42 which projects beyond block 30. As can be apprecia-ted from Figure 3, an upwardly inclined loop-engaging portion 44 is pro-vided at the projecting end of arm 42. Portion 44 in-cludes a curved edge surface 46 which is configured so as to be able to lift a loop from a transfer jack when ! such a loop is brought into engagement with edge 46 1 and the arm 42 is fully extended, as shown in Figure l.
I
The loop-lifting operation itself can be understood by reference to Figure 3.
.1 ':
When the arm 42 is retracted to the point where -portion 38 engages shoulder 36, portion 44 of the de-I looper is positioned outside the loci of movement of .
the vertically reciprocating needles and beyond the maximum extension of the tips 20 of the transfer jacks.
Conse~uently, no interference with the de-looper can ,..
. occur as the needles and jacks move with respect to the ~tationary de-looper.
During those periods when loops are formed on 25 the transfer jacks in the manner previously described, ~
- the elevation of the need~es and extension of the trans- ~: :
~ fer jacks are programmed such that the loops are produced ; at-a location angularly displaced from the fixed position of the developer 40. When it is desired to form terry ~ :
from the loops, the transfer jacks remain extended after `. , .
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the loops are formed thereon, and the arm 42 of the de-looper 40 is extended prior to the arrival of the loops at the de-looping position. The de-looper may be extended and withdrawn in a variety of ways. For example, this operation may be accomplished by select-ively energizing a solenoid (not shown) which is joined to a projecting element 48 secured to block assembly 32 whereby solenoid actuation is translated through element 48 to sliding movement of the assembly with respect to block 30 en the de-looper arm 42 is fully extended, edge 46 of the inclined portion 44 describes a path from I a position below and inwardly of the circular locus of ¦ ~ the extended transfer jack tip 20 to a position above ;~ -and outwardly of this locus. The edge 46 has a direc-tional component extending in the direction of movement of the transfer jack as the latter moves past the de-j looper. Consequently, as can be appreciated from Figure ~;
3, the loops carried by the extended transfer jacks are lifted and separated from the tips 20 by edge 46 as the ~, jack passes over the de-looper. Thus, terrying is ac-complished without withdrawing the transfer jacks as is ~ required ~y the arrangements disclosed in U.S. Patents -' 3,107,509 and 4~010~626~ The jacks remain extended to 25 produce loops on the next course(s) of fabric whereby a terry patch is knitted. The terrying operation is terminated by withdrawal of the de-looper arm 42r I In the case where the loops formed on the trans-....
fer jacks are to be knitted into a subsequent course of the item being produced, the jac~s are retracted. The J
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08~3 curved tips 20 of the jacks permit the loops to be retained by the jacks until the jacks again are ex-tended into operative relationship with knitting needles.
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Claims (3)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An apparatus for terrying yarn comprising:
a circular ladies hosiery knitting machine including:
(a) a latch needle cylinder and a dial rotatable about a common axis;
(b) a plurality of latch needles supported by said cylinder and movable therewith as the cylinder rotates, said needles being adapted to be reciprocated in a direction parallel to said axis to knit yarn into a fabric; and (c) a plurality of transfer jacks radially oriented with respect to said dial and movable therewith as the dial rotates, said jacks being adapted to be extended and retracted with respect to the dial in a plane normal to the direction of reciprocation of said needles, said jacks, when extended, cooperating with the needles to form loops of yarn on the jacks, said loops being movable in a circular path as the jacks rotate with the dial; and a de-looping arrangement adapted to be moved between operative and inoperative positions, said arrangement in the operative position being located in the path of movement of the loops carried by said extended jacks thereby engaging said loops to separate them from the jacks and said arrangement in the inoperative position being located out of the path of movement of the loops carried by said extended jacks thereby permitting said loops to be knitted into the fabric.
a circular ladies hosiery knitting machine including:
(a) a latch needle cylinder and a dial rotatable about a common axis;
(b) a plurality of latch needles supported by said cylinder and movable therewith as the cylinder rotates, said needles being adapted to be reciprocated in a direction parallel to said axis to knit yarn into a fabric; and (c) a plurality of transfer jacks radially oriented with respect to said dial and movable therewith as the dial rotates, said jacks being adapted to be extended and retracted with respect to the dial in a plane normal to the direction of reciprocation of said needles, said jacks, when extended, cooperating with the needles to form loops of yarn on the jacks, said loops being movable in a circular path as the jacks rotate with the dial; and a de-looping arrangement adapted to be moved between operative and inoperative positions, said arrangement in the operative position being located in the path of movement of the loops carried by said extended jacks thereby engaging said loops to separate them from the jacks and said arrangement in the inoperative position being located out of the path of movement of the loops carried by said extended jacks thereby permitting said loops to be knitted into the fabric.
2. An apparatus according to Claim 1 wherein said de-looping arrangement is mounted on a stationary support, said arrangement including a slidable block assembly joined to the support and a de-looping element extending from said assembly, said element being provided with an inclined portion for engaging and elevating the loops when said de-looping arrangement is in its operative position and the transfer jacks are extended.
3. An apparatus according to Claim 2, wherein said inclined portion has a loop-engaging edge having a directional component extending in the direction of movement of the transfer jacks as they move past said element.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US87872478A | 1978-02-17 | 1978-02-17 | |
| US878,724 | 1978-02-17 | ||
| US967,496 | 1978-12-07 | ||
| US05/967,496 US4228665A (en) | 1978-12-07 | 1978-12-07 | Apparatus for terrying yarn |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1081983A true CA1081983A (en) | 1980-07-22 |
Family
ID=27128502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA321,564A Expired CA1081983A (en) | 1978-02-17 | 1979-02-15 | Apparatus for terrying yarn |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1081983A (en) |
-
1979
- 1979-02-15 CA CA321,564A patent/CA1081983A/en not_active Expired
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