US3392551A - Pneumatic take-up or tensioning device for circular knitting machines - Google Patents

Pneumatic take-up or tensioning device for circular knitting machines Download PDF

Info

Publication number
US3392551A
US3392551A US375074A US37507464A US3392551A US 3392551 A US3392551 A US 3392551A US 375074 A US375074 A US 375074A US 37507464 A US37507464 A US 37507464A US 3392551 A US3392551 A US 3392551A
Authority
US
United States
Prior art keywords
tube
needle cylinder
cylinder
air
fabric
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 - Lifetime
Application number
US375074A
Other languages
English (en)
Inventor
Tenconi Riccardo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3392551A publication Critical patent/US3392551A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/88—Take-up or draw-off devices for knitting products
    • D04B15/92—Take-up or draw-off devices for knitting products pneumatic

Definitions

  • a circular knitting machine having a cylinder bearing an annular series of needles and sinkers cooperating with the needles to form the stitches of a circular knit fabric adjacent one end of the cylinder, is provided with a pneumatic tensioning device to produce a flow of air from the interior to the exterior of the needle cylinder in an axial direction to tension the fabric as it is knit and to pull it out of the needle cylinder at the end at which the stitches are formed. This generally results in the circular knit fabric being tensioned upwardly out of the upper end of the needle cylinder so that the fabric is everted immediately after the formation of the stitches.
  • This invention relates generally to circular knitting machines of the kind used for the manufacture of hosiery, and is particularly directed to a pneumatic take-up or tensioning device for such machines.
  • Oircular knitting machines presently employed for the manufacture of hosiery have a vertically arranged, rotatable cylin-der bearing an annular series of needles, and a sinker ring extending around the upper end of the needle cylinder and carrying cam actuated sinkers which cooperate with the needles to form the stitches of a circular or tubular knit fabric adjacent the upper end of the needle cylinder.
  • a take-up or tensioning device draws the same downwardly through the needle cylinder so as to maintain a constant tension on the fabric, thereby to achieve uniform knitting thereof.
  • the existing take-up or tensioning devices which are pneumatic, that is, which rely on a flow or stream of air for tensioning the fabric as it is knit, all pass the flow of air longitudinally through the needle cylinder in the downward direction, that is, in the direction from the head or end of the needle cylinder where the stitches are formed toward the opposite end of the needle cylinder.
  • the flow of air downwardly through the needle cylinder may be produced by a source of air under pressure, but is usually produced by a source of low pressure or vacuum.
  • the circular knitted fabric progressively develops inside the needle cylinder or in a stationary or rotated tube extending axially downward from within the cylinder, and the completed stocking is conveyed out of the bottom of the needle cylinder and into a conduit which carries the same to a connecting chamber.
  • the head or upper end of the needle cylinder was located at a suflicient height so that the stocking being knit therein and tensioned downwardly by the air flow could hang straight within the needle cylinder and its tubular extension, even when the stocking had been knitted to its full length.
  • pneumatic tensioning and everting devices have now been perfected so as to be capable of the necessary consistent or reliable operation, such devices are relatively complicated and delicate in that they require the use of distributor valves controlled in accordance with the operation of the knitting machine for selecting the part of the air flow through several conduits. Further, where the air flow for tensioning the stocking, or for successively tensioning and then everting the completed stocking, is created by connection to a source of suction or vacuum, as distinguished from a source of air under pressure, it is necessary to use relatively large centrifugal blowers for that purpose.
  • Another object is to provide a pneumatic tensioning device that permits the construction of the associated circular knitting machine with its head, at which the sinkers cooperate with the needles to form stitches, being relatively low so as to facilitate inspection of the fabric being knitted and servicing of the machine.
  • a further object is to provide a pneumatic tensioning device for circular knitting machines which causes the circular knitted fabric to be progressively developed with the right side of the knitted fabric facing inwardly so that, upon completion of a stocking, there is no need to evert the same prior to the next sewing step.
  • a circular knitting machine having a cylinder bearing an annular series of needles and sinkers cooperating with the needles to form the stitches of a circular knit fabric adjacent one end of the cylinder is provided with a pneumatic tensioning device comprising means operative to produce a flow of air from the interior of the needle cylinder to the exterior thereof generally in the axial direction extending toward said one end of the cylinder from the other end thereof, whereby the flow of air is adapted to tension the fabric as it is knit and to pull the knit fabric out of the needle cylinder at the end of the latter at which the stitches are formed.
  • FIG. 1 is a diagrammatic vertical sectional view of a circular hosiery knitting machine provided with a pneumatic tensioning device in accordance with one embodiment of this invention, and as viewed along the line II on FIG. 2;
  • FIG. 2 is a diagrammatic top plan view of the knitting machine and pneumatic tensioning device of FIG. 1;
  • FIG. 3 is a diagrammatic view illustrating the operation of the pneumatic tensioning device of FIGS. 1 and 2 at an early stage in the production of a stocking;
  • FIG. 4 is a diagrammatic view similar to a portion of FIG. 3, but illustrating a later stage in the production of the stocking;
  • FIG. 5 is a diagrammatic vertical sectional view illustrating a pneumatic tensioning device in accordance with another embodiment of this invention as applied to a circular knitting machine of the type commonly used for the production of hosiery with a turned welt;
  • FIG. 6 is a diagrammatic view similar to that of FIG. 3, but illustrating a pneumatic tensioning device in accordance with still another embodiment of this invention.
  • the circular knitting machine generally comprises a framework 1 and a needle cylinder 2 carried by a supporting tube 3 which is rotatably mounted in the framework 1.
  • a rotated drive shaft 4 is also mounted in framework 1 and carries a gear 5 meshing with a gear 6 formed on the supporting tube 3 for effecting rotation of the needle cylinder 2.
  • the needle cylinder 2 is shown rotatable about a vertical axis and its outer surface is formed with axial slots 7 spaced apart circumferentially around the needle cylinder and slidably receiving needles 8.
  • the usual sinker ring 9 is secured to the upper end of cylinder 2 and carries cam actuated sinkers 10 which cooperate with the needles 8 in the known manner to form the stitches of a circular knit fabric.
  • An upright 11 is secured to the framework 1 and, at its upper end, carries a pin 12 on which an arm 13 is pivotally mounted for upward swinging movement from its operative position illustrated on FIG. I.
  • the arm 13 has a slot 14 therein accommodating thread or yarn guides 15 which are rockable on a pivot 16 and constitute a feeding station at which yarns are selectively fed to the needles 8 for knitting by the cooperative action of the latter with the sinkers 10.
  • a cover or dial cap 17 depends from the free end of arm 13 and, in the lowered or operative position of the latter, the cover 17 substantially closes the upper end of needle cylinder 2 and is disposed immediately above the level of the sinking plane of sinkers 10.
  • the knitting machine may be considered conventional.
  • the cover 17 has an aperture 17a (FIG. 2) at one side, and a suitably mounted fixed tube 18 extends upwardly from needle cylinder 2, and has its lower end located within the aperture 17a.
  • the diameter of tube 18 is substantially smaller than the inner diameter of needle cylinder 2, and the lower end or inlet mouth of tube 18 is located approximately at the plane of sinking of sinkers 10.
  • the embodiment of the invention illustrated in FIGS. 1 to 4, inclusive further has a fixed tube 19 extending generally in the axial direction through the interior of needle cylinder 2 and being suitably secured to the framework 1, as by welding to a bracket 20 on the framework (FIG. l).
  • Tube 19 is in axial alignment with the lower end portion of tube 18, and the upper end of tube 19 is tapered, as shown, to form a nozzle registering with, and being spaced radially from the inlet mouth or lower end of tube 18.
  • a circular plate 21 has an eccentrically located aperture receiving the upper tapered end or nozzle of tube 19 and is secured to the latter, as by welding, so that the plate 21 is fixedly located within needle cylinder 2 at a level below cover 17 so as to define a space 22 therebetween in which the knitting occurs.
  • the lower end of tube 19 is connected to the outlet of a centrifugal blower or fan 23 so that, when the latter is operated, air under pressure from the blower causes an upward air flow through the tube 19, as indicated by the arrow 24.
  • a centrifugal blower or fan 23 Such upward air flow issues from the tapered upper end or nozzle of tube 19 into the registered lower end of tube 18 and simultaneously induces a relatively low pressure or suction within the space 22 so that air enters around the periphery of the space 22 and is drawn through the latter to enter the tube 18 at the annular clearance between the lower end of tube 18 and the nozzle or tapered upper end of tube 19.
  • air flows indicated by the arrows 26 (FIG. 1) which serve to tension the tubular fabric knitted by the cooperative action of the needles 8 and sinkers 10 and to draw such fabric into the mouth of tube 18.
  • FIG. 3 which illustrates the operation of the tensioning device at the beginning of the formation of the border of a stocking
  • the knitted fabric 25 rotating with the needles 8 and sinkers 10 about the axis of cylinder 2 is sucked immediately after its formation in the space 22 by the streams of air passing through space 22 toward the bottom end or mouth of tube 18 so that the fabric cannot descend within the needle cylinder 2 as in knitting machines with conventional tensioning or take-up devices.
  • the movement of the knitted fabric 25 downwardly within the needle cylinder 2 is prevented by the circular plate 21 which defines the bottom wall of space 22.
  • the portion of the margin entering the tube 18 changes its position continuously, as the tubular fabric rotates with the needles and sinkers, while the tube 18 and the cover 17 and circular plate 21 defining space 22 are stationary.
  • the portion of the margin thereof which enters the tube 18 increases correspondingly until the entire periphery of the tubular fabric is within tube 18, as shown on FIG. 4. From then on the tubular fabric is tensioned by the stream of air blown through the tube 18 in the upward direction.
  • the stocking progressively grows or develops within the tube 18 and, upon the completion of the stocking, that is, at the press-off cycle of the knitting machine, the stocking is detached from the needles 8 so that the flow of air through the tube 18 can convey the completed stocking through the tube to any desired collection point, for example, to a basket 27 disposed under the end of tube 18 remote from needle cylinder 2, as shown on FIG. 3.
  • a suitably actuated valve (not shown) interposed in the tube 19.
  • the flow of air through the tube 19 and the tube 18 is very effective to tension the knitted fabric during its formation and it has been found that the requisite air flow can be produced with a centrifugal fan or blower that is no larger, and may be even smaller than the fans or blowers required in connection with previously proposed pneumatic tensioning devices.
  • the tensioning device of FIGS. 1 to 4, inclusive employs a source of air under pressure for generating the desired air flows through the space 22 and the tube 18, it is to be understood that, in accordance with the present invention, the necessary air flows may be produced by a source of vacuum or relatively low pressure, as hereinafter described in detail with reference to FIG. 6.
  • the frame of the knitting machine can be constructed to dispose the upper end or head of the needle cylinder, that is, the level at which the knitting of the yarns is effected, at the height most convenient for inspection and servicing of the machine.
  • the knitting machine illustrated in FIGS. 1 to 4, inclusive does not have a dial carrying an annular series of radially disposed transfer bits of the kind that are sometimes provided for formation of a double border or turned welt on the hosiery, it is to be noted that knitting machines exist in which the function of such transfer bits is performed by the needles themselves during the initial stage of the formation of a stocking.
  • the external tube 18 which is located eccentrioally with respect to the axis of the needle cylinder 2 in the arrangement of FIGS.
  • a pneumatic tensioning device embodying the present invention may also be provided for conventional knitting machines of the above mentioned type in which a dial carrying transfer bits is provided for the purpose of forming a turned welt.
  • the parts of the knitting machine corresponding to those previously described in connection with FIG. 1 are identified by the same reference numerals.
  • the rotated drive shaft 4 has an upwardly directed extension 4a which, at its upper end, carries a gear 28.
  • the gear 28 meshes with an idler gear 29 which, in turn, meshes with a second idler or intermediate gear 30.
  • Both of the idler gears 29 and 30 are rotatable on stub shafts or axles carried by the framework 1 of the knitting machine.
  • the gear 30 meshes with a gear 31 formed externally on a hollow shaft 32.
  • the hollow shaft 32 is rotatably mounted in the framework of the knitting machine and extends vertically above the needle cylinder 2 in axial alignment with the latter.
  • the usual dial 33 carrying a series of radially extending transfer bits 34 which, in a conventional manner, are operative to form the turned welt of a stocking.
  • hollow shaft 32 is suitably connected to a tube 35 which, in turn, is connected to the inlet side of a centrifugal blower or fan (not shown), that is, a source of vacuum or suction, so as to create an air flow in the upward direction through the hollow shaft 32 and the tube 35, as indicated by the arrow 36.
  • a centrifugal blower or fan not shown
  • FIG. 5 can be employed in connection with a source of air under pressure merely by providing such arrangement with a tube similar to the tube 19 of FIG. 1 which is connected to the source of air under pressure, and by providing such tube 19 with a plate 21 spaced downwardly from the dial 33, which then functions as the cover 17 of the first described embodiment.
  • the pneumatic tensioning device illustrated on FIG. 1 can also be modified so that the stream of air directed upwardly through the external tube 18, as indicated by the arrow 26, results from suitable connection of the end of such tube 18 remote from the needle cylinder to a source of relatively low pressure or suction.
  • the tube 19 and plate 21 of FIG. 1 are again eliminated, and the tube 18 extending upwardly from the upper end of the needle cylinder is connected, as at 41, to a casing 37 so as to communicate with a compartment 40 defined within such casing.
  • the interior of the casing is divided by a perforated wall 39 into the compartment 40 and a compartment 42 which is in communication with an outlet connection 43.
  • the outlet connection 43 is connected by a tube 44 to the inlet 45 of a centrifugal fan or blower 46 which operates to create a suction or relatively low pressure at the inlet 45.
  • a valve 47 is located in the outlet connection 43 of casing 37 for movement between open and closed positions, and the compartment 40 of the casing is provided with a door 38 movable from the closed position shown in full lines to an open position indicated by the broken lines.
  • the door 38 is maintained in its closed position and the valve 47 is open so that the suction created at the inlet 45 of the blower 46 causes a flow of air through the tube 18 in the direction from the needle cylinder into the compartment 40 of casing 37, as indicated by the arrow 26, from compartment 40 through perforated wall 39 into the compartment 42, and from compartment 42 through tube 44 to the inlet of the blower.
  • Such flow of air attracts the tubular knitted fabric during the formation thereof, and draws the fabric upwardly into the tube 18 so as to tension the knitted fabric.
  • the air flow through tube 18 conveys the completed stocking into the compartment 49 of casing 37.
  • valve 47 Upon the delivery of the completed stocking to compartment 40, valve 47 is closed and door 38 is opened, for example, by actuating mechanisms (not shown) under the control of the usual cams of the knitting machine, so that the completed stocking is ejected or falls into a collecting vessel or basket (not shown) disposed under the casing 37.
  • the upward tensioning of the stocking within the tube 18 ensures that the stocking, as knit, will have its right side facing inwardly, thereby to avoid the necessity of exerting the completed stocking prior to the subsequent sewing step.
  • the arrangement of FIG. 6 makes it possible to considerably reduce the height of the knitting machine since each stocking being knit is directed generally upwardly from the upper end of the needle cylinder, rather than hanging downwardly and issuing from the bottom of the needle cylinder, as in previous tensioning devices.
  • the head of the knitting machine can be located at the height most suitable for easy inspection and servicing of the knitting machine.
  • the several illustrated embodiments of the invention have the associated knitting machines arranged with their needle cylinder axes extending vertically, as in all existing knitting machines, but it will be noted that the pneumatic tensioning devices embodying this invention make it possible to arrange the needle cylinder with its axis inclined or even horizontal.
  • a pneumatic tensioning device comprising means operative to produce a flow of air from the interior of said cylinder to the exterior thereof generally in the axial direction extending toward said one end of the cylinder from the other end thereof, whereby said flow of air is adapted to tension fabric as it is knit and to pull the knit fabric out of said cylinder at said one end of the latter.
  • a pneumatic tensioning device comprising means operative to produce a flow of air upwardly through said cylinder to the exterior of the latter at said upper end of the cylinder, whereby said flow of air is adapted to tension fabric as it is knit and to draw the knit fabric upwardly out of said upper end of the cylinder.
  • a pneumatic take-up device comprising a tube arranged outside of said cylinder and extending generally in the axial direction away from said one end of the cylinder, said tube having an open end lying substantially in said sinking plane, and means op erative to produce a flow of air into said open end of the tube and through the latter in the direction away from said cylinder so that said flow of air tensions the fabric as it is knit and conveys the knit fabric out of said cylinder through said tube.
  • a pneumatic takeup device as in claim 3; wherein said means operative to produce the flow of air through said tube includes a pipe in said cylinder having an end terminating adjacent, and opening in the axial direction toward said open end of the tube with an annular gap being defined between the adjacent ends of the tube and pipe, and a source of air under pressure connected to said pipe to cause a flow of air through the latter and into said tube, the flow of air through said pipe inducing additional air to flow into said tube through said annular gap.
  • a pneumatic takeup device as in claim 4; wherein said pipe has a nozzle at said end terminating adjacent said tube.
  • a pneumatic takeup device as in claim 3; further comprising a cover substantially closing said one end of the needle cylinder approximately at said sinking plane and having an opening through which said open end of the tube projects.
  • a pneumatic takeup device as in claim 6; further comprising a wall fixed within the cylinder and extending parallel to said cover to define a space therebetween in which the stitches of the circular knit fabric are formed;
  • said means operative to produce a fiow of air through said tube includes a pipe in said cylinder having an end projecting through said wall and having an end terminating adjacent, and opening in the axial direction toward said open end of the tube with an annular gap being defined between the adjacent ends of the tube and pipe and communicating with said space, and a source of air under pressure connected to said pipe to cause air to issue forcefully from said pipe into said open end of the tube and thereby induce the flow of air from said space into said open end of the tube for further urging the circular knit fabric into the tube.
  • a pneumatic takeup device as in claim 6; wherein said open end of the tube is arranged eccentrically with respect to said cylinder.
  • a pneumatic takeup device as in claim 3; wherein said means operative to produce a flow of air includes a source of vacuum, and means connecting said source of vacuum with the other end of said tube.
  • a pneumatic takeup device as in claim 9; wherein said means connecting the source of vacuum with said other end of the tube includes means defining a chamber at said other end of the tube, a conduit extending from said chamber to said source of vacuum, a perforated wall between said chamber :and conduit, a door on said chamber through which knitted fabric drawn into said chamber can be removed, and valve means in said conduit for interrupting the action of the vacuum when said door is opened.
  • a pneumatic take-up device comprising a tube arranged outside of said cylinder and extending generally in the axial direction away from said one end of the cylinder, said tube including a section constituting a hollow shaft supporting said dial and having an open end lying substantially in said sinking plane, and means operative to produce a flow of air into said open end of said section of the tube and through the latter in the direction away from said cylinder so that said flow of air tensions the fabric as it is knit and conveys the knit fabric out of said cylinder through said tube.
  • a pneumatic take-up device comprising a tube arranged outside of said cylinder and extending generally in the axial direction upwardly away from said upper end of the cylinder, said tube having an open end lying substantially in said sinking plane, and means operative to produce a flow of air upwardly into said o en end of the tube and through the latter in the direction away from said cylinder so that said flow of air tensions the fabric as it is knit and conveys the knit fabric out of said cylinder through said tube.
  • a vertically disposed needle cylinder and a vertically arranged tubular member arranged in axial alignment with the upper end of said needle cylinder and having produced therein an upwardly extending air stream to draw into said tubular member the knitted material as it is knitted by meshforming parts on said needle cylinder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Treatment Of Fiber Materials (AREA)
US375074A 1963-06-22 1964-06-15 Pneumatic take-up or tensioning device for circular knitting machines Expired - Lifetime US3392551A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1316463 1963-06-22

Publications (1)

Publication Number Publication Date
US3392551A true US3392551A (en) 1968-07-16

Family

ID=11144276

Family Applications (1)

Application Number Title Priority Date Filing Date
US375074A Expired - Lifetime US3392551A (en) 1963-06-22 1964-06-15 Pneumatic take-up or tensioning device for circular knitting machines

Country Status (6)

Country Link
US (1) US3392551A (enrdf_load_stackoverflow)
BE (1) BE649570A (enrdf_load_stackoverflow)
DE (2) DE1585197C3 (enrdf_load_stackoverflow)
ES (1) ES301227A1 (enrdf_load_stackoverflow)
GB (1) GB1033232A (enrdf_load_stackoverflow)
NL (1) NL6406987A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3434308A (en) * 1968-07-24 1969-03-25 B & S Machinery Co Method of knitting hoisery blanks
US3826111A (en) * 1970-03-11 1974-07-30 Bentley Eng Co Ltd Circular knitting machine suction takeup
US3841112A (en) * 1971-06-02 1974-10-15 Elitex Z Textil Strojirenstvi Apparatus for holding and removing a knitwork in a double cylinder circular knitting machine
US3879961A (en) * 1973-02-20 1975-04-29 John Greczin Knitting machines including rotatable hold down ring
US4003220A (en) * 1973-02-20 1977-01-18 Knitting Machinery Corporation Of America Knitting machine including rotatable hold down ring
US4312608A (en) * 1980-03-10 1982-01-26 Consolidated Foods Corporation Trap gate valve assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3443403A (en) * 1967-03-20 1969-05-13 Singer Co Pneumatic takedown for hosiery machines

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2844952A (en) * 1955-05-05 1958-07-29 Hemphill Co Fabric tensioning method and mechanism

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2844952A (en) * 1955-05-05 1958-07-29 Hemphill Co Fabric tensioning method and mechanism

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3434308A (en) * 1968-07-24 1969-03-25 B & S Machinery Co Method of knitting hoisery blanks
US3826111A (en) * 1970-03-11 1974-07-30 Bentley Eng Co Ltd Circular knitting machine suction takeup
US3841112A (en) * 1971-06-02 1974-10-15 Elitex Z Textil Strojirenstvi Apparatus for holding and removing a knitwork in a double cylinder circular knitting machine
US3879961A (en) * 1973-02-20 1975-04-29 John Greczin Knitting machines including rotatable hold down ring
US4003220A (en) * 1973-02-20 1977-01-18 Knitting Machinery Corporation Of America Knitting machine including rotatable hold down ring
US4312608A (en) * 1980-03-10 1982-01-26 Consolidated Foods Corporation Trap gate valve assembly

Also Published As

Publication number Publication date
BE649570A (enrdf_load_stackoverflow) 1964-10-16
ES301227A1 (es) 1964-12-01
DE1585197A1 (de) 1970-02-05
DE1785634B2 (de) 1975-09-18
NL6406987A (enrdf_load_stackoverflow) 1964-12-23
GB1033232A (en) 1966-06-22
DE1785634A1 (de) 1973-10-25
DE1585197C3 (de) 1974-11-21
DE1585197B2 (de) 1974-04-18

Similar Documents

Publication Publication Date Title
US3392551A (en) Pneumatic take-up or tensioning device for circular knitting machines
US2405162A (en) Knitting method and apparatus
US3214944A (en) Takeup and everting delivery means for circular knitting machines
US3550403A (en) Apparatus and method for pneumatically tensioning and supporting tubular fabric on a circular knitting machine
US3577942A (en) Apparatus for closing hosiery toes and everting hosiery and method
US2844952A (en) Fabric tensioning method and mechanism
JPH0226942A (ja) 編地被覆糸の製造装置
TW202009338A (zh) 管狀織物之翻面機構及其方法
US3738123A (en) Pneumatic knit fabric tensioning devices for use with circular knitting machines
US3159015A (en) Pneumatic tensioning device for circular knitting machines, particularly for circular machines for making stockings
US3516268A (en) Device for minimizing twisting of circular knit fabric
US3036449A (en) Fabric tensioning device for knitting machines and method
US3473350A (en) Pneumatic goods withdrawal with turning apparatus
US3826111A (en) Circular knitting machine suction takeup
US3508420A (en) Circular knitting machine for the manufacture of runproof stockings
US3108462A (en) Pneumatic tensioning and everting arrangements for cylindrical stocking knitting machines
US2873596A (en) Pneumatic take up for circular knitting machines
US3841112A (en) Apparatus for holding and removing a knitwork in a double cylinder circular knitting machine
US3979928A (en) Hosiery-type knitting machines adapted for the production of large loose stitches from heavy-denier yarn
US3745794A (en) Apparatus for pneumatically tensioning and collecting circular knit hosiery articles
US3273360A (en) Pneumatic tensioning, everting, and discharging device and method for circular knitting machines
US2244331A (en) Apparatus for producing wrap stripe hosiery
US2995914A (en) Fabric tensioning device
GB955184A (en) Circular knitting machines
US3564875A (en) Fabric anti-twisting device for circular knitting machines