US3200618A - Knitting machine and method - Google Patents
Knitting machine and method Download PDFInfo
- Publication number
- US3200618A US3200618A US43600A US4360060A US3200618A US 3200618 A US3200618 A US 3200618A US 43600 A US43600 A US 43600A US 4360060 A US4360060 A US 4360060A US 3200618 A US3200618 A US 3200618A
- Authority
- US
- United States
- Prior art keywords
- cam
- sinker
- casting
- sinkers
- knitting
- 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
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Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B9/00—Circular knitting machines with independently-movable needles
- D04B9/42—Circular knitting machines with independently-movable needles specially adapted for producing goods of particular configuration
- D04B9/46—Circular knitting machines with independently-movable needles specially adapted for producing goods of particular configuration stockings, or portions thereof
Definitions
- a further object is that of drawing both loosely knitted stitches and very tightly knitted stitches in a fabric by drawing behind sinker nibs while avoiding cutting of loops during casting off.
- the sinker fiopper cam has been modified to improve still further the appearance of the fabric by eliminating firing of sinkers as they are moved inwardly by that cam, to delay that inward movement somewhat and also to eliminate the necessity of making changes to the needle cams when converting from conventional knitting to knitting over the backs of sinkers.
- a separate pattern drum has been provided in accordance with one modification of the invention which is independent of the main pattern drum in is operation and from which movement of the sinker cams in controlled. This drum greatly increases the number of available steps of the machine for control of other functions as well.
- PEG. 1 is a perspective view of the invention illustrating the auxiliary pattern drum and the control mechanism for the sinker cams as applied to one type of knitting machine;
- FIG. 2 is a view similar to FIG. 1 but looking from the rear and side of the machine;
- FIG 3 is a front elevation, partly in section, illustrating the control of the casting off cam by means of vertical cylinder movement
- FIG. 4 shows a portion of the lower part of FIG. 3
- FIG. 5 is an elevational view of the auxiliary pattern drum, partly in section, as seen from the rear of the machine;
- FIG. 6 is a plan view of a small portion of the pattern chain and its associated ratchet wheel
- FIG. 7 is an end elevational viewof the auxiliary drum and its associated mechanism
- FIG. 8 is a front elevational view, partly broken away, of the auxiliary drum and its ratchet and pawl means for 'advancin g the same;
- FIG. 9 is a view similar to FIG. 7 and including the rat-ching means for the main pattern drum and the pattern chain;
- FIG. 10 shows a small section of the needle cams including one of the stitch cams
- FIG. 11 is a plan view of the fiopper cam
- FIG. 12 is a plan view of a part of the sinker cam control mechanism
- FIG. 13 is a side view of a part of FIG. 12;
- FIG. 14 is a side elevation, partly in section, of the sinker head and sinker cap
- FIG. 15 is a plan view of the sinker cap and a part of the cam control mechanism
- FIGS. 16 to 19 illustrate relative positions of the sinker casting off and hopper cams in the positions they occupy during the knitting of various portions of an article of hosiery being knitted.
- FIG. 20 is a perspective view of the invention as applied to another well known knitting machine.
- FIGS. 1, 3 and 14 the invention is seen as applied to a conventional knitting machine for the reverse is true.
- An arm 30 is integral with and extends laterally from the support and has fixed thereto a vertical rod Ell to the upper end of which is attached a hold-down arm 32 having an adjustable screw 33 adapted to engage the upper surface of the sinker cap.
- a compression spring 34 acts upon a collar 35 fixed to rod 3-1 to urge the cap downwardly as the cylinder is being lowered.
- the other end of the spring acts against a fixed surface 36 (FIG. 4) forming a part of the frame 21.
- the function of the hold-down arm is to maintain the cylinder in contact with its support against the friction of the needles.
- An adjustable stop member 37 establishes the lower limit of movement of the cylinder support upon contact with the fixed surface 38.
- a support S fixed to the side of the sinker cap engages a roller bearing R to prevent displacement of the cap by the screw 33 (FIG. 3).
- the present invention is particularly adapted to be applied to a knitting method and apparatus as disclosed in United States Patents 2,374,857 and 2,376,044, the disclosures in which are hereby incorporated into this application.
- the measuring and drawing of the body yarn takes place over the backs and behind the nibs 3-9 of the sinkers rather than in the front of the nibs as in the conventional practice.
- Previously formed needle loops are cast ofi by means of the sinkers acting upon the intervening previously formed sinker loops only and not the newly formed ones, and causing the latter to pass from the backs over the tops of the ribs and into the throats of the sinkers.
- a hopper cam 4i moves the sinkers inwardly of the cylinder to permit the body yarn to be laid, measured and drawn over a drawing surface behind the nibs of the sinkers after a centercam 41 has effected withdrawal of the .sinkers to cause the newly formed loops to pass from the backs and into the throats thereof.
- a casting off cam 42 underlies the hopper cam, both being pivotally mounted on the cap at 43.
- a spring 44 acts upon an ear 45 extending outwardly from one end of the hopper cam to urge the eifective surface of the latter outwardly of the cylinder and a similar spring 46 acts upon an ear 4-7 formed integral with the casting off cam .(FIGS. 14 to 19).
- i V The fiopper and casting oif cams are controlled in a manner nowto be described. These cams each have a second ear-48 and 49, respectively, extending outwardly therefrom and to which are attached vertical actuating pins so and 51.
- a bracket 52 has a slideable rod 53 mounted therein which is biased toward the pin by a compression spring 54. The rod is connected to a Bowden wire cable 55 suit-ably supported on a fixed bracket 56.
- the cable is actuated at its opposite end by one arm of a bell crank lever 57 (FIGS. 5 and 7).
- a rod 58 maintains contact with the pinfl by means of a spring 59 and is connected to a Bowden wire cable 60 which in turn is actuated by bell crank lever at.
- a main pattern drum 62 is mounted across the rear of the machine, its movement being effected periodically in a clockwise direction by means of a pawl 63 and ratchet wheel as under control of a pattern chain65 itself being continually ratcheted in the same direction by means of a second pawl 66 and ratchet wheel 67, in known manner and as disclosed in United States Patents 2,422,568 and 2,827,780.
- an auxiliary pattern drum generally denoted'by the arrow 68 (FIG. '5) is co-axially attached to the main patter-ndrum but its movements are eifected independently of those of the main drum as will be explained.
- the auxiliary drum may be substantially identical in construction to the jack selecting pattern drums disclosed in United- States Patent 2,217,022 and which include a series of super-imposed pattern discs 69 each having frangible butts 79 (FIG. 7) around the outer periphery thereof.
- a friction device 71 serves to maintain the drum in a fixed position along its axis 72.
- the auxiliaiy drum has a ratchet wheel 73 fixed to the base thereof which is periodically advanced by a pawl 74 of novel construction. .
- the latter pawl is mounted on an extension of the stud 75 which is oscillated by one arm 76 of a bell crank lever about a pivot 77.
- Theother arm 78 of that lever supports the pawl es.
- the pawl 63 forratcheting the main-pattern drum and the pawl 74 for ratcheting the auxiliary pattern drum are act-uable to effect simultaneous ratcheting of their respective drums. They may do so, however, selectively in a manner independent of each other as will be explained.
- the pawl 66 acts during the withdrawal stroke of pawls rs and 74.
- both of the pawls 6'3 and 74 would effect a simultaneous movement of their respective ratchet wheels.
- One or both of the pawls may be withheld from action in any sequence desired.
- the main ratchet pawl includes .a pin 79 extending laterally therefrom which is engageable with a depending arm 8% fixed to a reciprocab'le stud 81.
- a cam follower arm 82 is also fixed to the sarne'arrn and is adapted to be aifected by a series of cams 83 of variable 1 eight spaced about the circumference of them-aim pattern drum.
- the auxiliary ratchet pawl 74 includes a side plate $5 attached thereto which has a loweredge generally coextensive with the pawl itself except for a concave cut-out portion 86 (FIGS. 7 and 8).
- a follower'arm 86' is pivoted at 87 and adapted to be influenced by lugs 88 formed on links of the pattern chain.
- the opposite end of the 'arm has a pin 39 depending therefrom which terminates in a horizontally extending portion 9% ⁇ adapted to engage the lower edge of the pawl. In those portions of the pattern chain where no lugs 88 appear, the pin 89 acts to lift the free end of the pawl 74- sufliciently to render it completely inactive.
- the pawl 74 is further controllable so that during such times when it is not under the influence of the pin 89, it may be rendered effective over'a portion only of its stroke instead ofover the complete length of the stroke.
- That mechanism comprises an arm 91 pivoted at its lower end at 92 and including a follower portion 93 engageable with one of the discs 69 on the auxiliary drum 68. The upper end of that arm is linked to a second arm 94 also pivoted at 87.
- the arm 91 includes a pin 95 extending horizontal therefrom and adapted to engage the lower edge of the side plate 85, note FIGS. 7 and 8.
- a slotted disc 96 (FIG. 9) is placed adjacent the ratchet wheel 73 and underlying the pawl 74 in part to aid the latter in its proper engagement of the ratchet teeth.
- the bell crank lever 57 includes a follower member 97 engageable with one of the pattern discs and the bell crank lever 61 includes a similar member (not shown) thereby to control movement of the cables 55 and 60 and also of the fiopper and casting 01f cams, respectively.
- the casting off cam is further controllable independently of the arm 61 in a manner and for a purpose now to be described.
- the casting off cam 42 which includes a bell crank lever pivoted at 98 upon an arm 99 extending outwardly from the rod 31.
- One arm 161 of that lever engages the upper edge of a sleeve memher 101 which is vertically adjustable by means of a screw 1512 adapted to engage a horizontal surface 1113 on the frame 21 and with respect to which the sleeve generally remains fixed.
- the other arm 104 of the lever is adapted to engage the end of an adjustable member 1415 fixed to an end of the cable 60.
- the cam 40 includes an active camming surface between the arrows a and b (FIG. 18) for smoothly affecting the butts 106 of the sinkers to move the latter inwardly and without any firing whereby the sinkers are positioned to have the yarn drawn behind their nibs. From points 12 to c on the flopper cam the sinkers are substantially radially motionless while needles are measuring the yarn and forming new stitches. At 0? the sinkers are moved inwardly to cause the previously formed sinker loops to be cast off.
- the active surface of the fiopper cam between d and e is concentric with the needle cylinder, unlike any previous construction, in order to keep the newly formed stitches taut inside the needle circle thus to prevent the needle, as it is being raised, from passing up through the newly formed stitch.
- FIGS. 10 and 11 illustrate needle cam positions 0', d and e corresponding to sinker cam positions 0, d and e.
- the flopper cam is made concentric to the cylinder between points d and e.
- FIG. 16 represents the cam positions in the welt portion of the stocking which is normally knitted in the conventional manner in which case the flopper cam 4t is withdrawn to its inactive position as shown while the casting off cam is at its innermost position.
- the welt could, if desired, be knitted over the backs of sinkers in which case both cams would be in their innermost positions as seen in FIG. 17.
- This figure also represents the positions at the beginning of the leg or knee portion of the stocking.
- the only portion of the casting oif cam which is effective upon sinkers at this time is that surface immediately adjacent the cast off point 108.
- the casting off cam 42 is progressively withdrawn by the control mechanism above described until casting olf is under complete control of the fiopper cam as shown in FIG. 18.
- the flopper cam is again withdrawn to an inactive position while the cam 42 re mains in the position shown in FIG. 18.
- FIG. 20 illustrates the application of the cam control mechanism to the well known Scott 8: Williams machine which includes a needle cylinder 1119, sinker cap 111D, a cyhnder support 111, and a vertically movable holdd-own arm 112 effective to maintain the sinker cap in position as the cylinder and its support are moved vertically during fashioning.
- the flopper cam 41) and casting off cam 42 are of identical structure to earns 46 and 42 and are controlled by actuating members 113 and 1114, respectively, in a known manner.
- a horizontally extending arm 115 is attached at one end to the hold-down arm 112 and at its other end is connected by a linking member 116 to one arm 117 of a bell crank lever pivoted at 118 to a fixed support 119.
- the other arm 12d of the bell crank lever is adapted to act upon a pin 121 protruding from the actuating memher 114. It will be evident again that lowering of the needle cylinder and support during fashioning will produce a progressive withdrawal of the casting off cam 42.
- the new fiopper cam is designed so that its leading edge delays inward movement of the sinkers until just after the latches of adjacent needles have begun to c1ose.- This assures that the fabric will be carnmed down to be received in the sinker throats instead of the nibs passing under the fabric with a failure in casting off.
- fashioning has been disclosed as being achieved by lowering of the needle cylinder, it is to be understood that theinvention may also be applied to knitting machines employing vertically fixed needle cylinders wherein fashioning takes place :by raising the cam blocks as in the Hemphill knitting machines.
- a vertically movable sinker head adapted to vary the length of stitch-es to be knitted
- a sinker cam cap overlying said sinker head
- a flopper cam pivoted on the cap
- a pattern controlled means for operating said fiopper cam a casting olT cam adjacent said fiopper. cam and pivoted on said cap, means for withdrawing-said casting off cam progressively and in unison with lowering of said sinker head, and further pattern controlled means for effecting movement of said casting ofi cam to its full extent in a-single move.
- a circular, independent needle, knitting machine adapted to draw .a base yarn over the backs and behind the nibs of sinkers, a vertically movable sinker head adapted to vary the length of stitches to be knitted, a sinker cam cap overlying said sinker head, a hopper cam pivoted on the cap, a pattern controlled means for operating said fiopper cam, a casting off cam adjacent said floppcr cam and pivoted on said cap, means for Withdrawing said casting oif cam progressively and in unison with lowering of said sinker head, a main pattern drum, an auxiliary pattern drum having 'cam members thereon and operable independently of said main drum, and means controlled by said cam members for effecting movement of said casting oil cam to its full extent in a single move.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Machines (AREA)
Description
Claims (1)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US43600A US3200618A (en) | 1960-07-18 | 1960-07-18 | Knitting machine and method |
GB24082/61A GB940846A (en) | 1960-07-18 | 1961-07-04 | Method and machine for knitting tubular fabric |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US43600A US3200618A (en) | 1960-07-18 | 1960-07-18 | Knitting machine and method |
Publications (1)
Publication Number | Publication Date |
---|---|
US3200618A true US3200618A (en) | 1965-08-17 |
Family
ID=21927990
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US43600A Expired - Lifetime US3200618A (en) | 1960-07-18 | 1960-07-18 | Knitting machine and method |
Country Status (2)
Country | Link |
---|---|
US (1) | US3200618A (en) |
GB (1) | GB940846A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3318113A (en) * | 1965-07-12 | 1967-05-09 | Hanes Corp | Method and apparatus for fashioning circular knit fabric |
US4156356A (en) * | 1978-08-28 | 1979-05-29 | Oakdale Knitting Company | Hosiery knitting machine sinker control |
CN107276341A (en) * | 2017-08-03 | 2017-10-20 | 温州北工汽车电器有限公司 | A kind of whole-automatic subcoil coil winding machine |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US763432A (en) * | 1902-09-02 | 1904-06-28 | Heinrich Schwarzenbach | Dobby for looms for weaving. |
US1189220A (en) * | 1913-02-03 | 1916-06-27 | Scott & Williams Inc | Stitch-length mechanism for knitting-machines. |
DE331156C (en) * | 1914-09-16 | 1920-12-30 | Schubert & Salzer Maschinen | Circular knitting machine with sinkers |
US1665255A (en) * | 1928-04-10 | davis | ||
US2376044A (en) * | 1943-11-02 | 1945-05-15 | Hemphill Co | Method of knitting |
US2416933A (en) * | 1945-03-14 | 1947-03-04 | Cotton Ltd W | Patterning mechanism |
US2473503A (en) * | 1948-01-03 | 1949-06-21 | Dexdale Hosiery Mills | Pattern mechanism for knitting machines |
US2524578A (en) * | 1947-11-22 | 1950-10-03 | Hemphill Co | Stitch regulating mechanism |
US2580971A (en) * | 1950-03-28 | 1952-01-01 | Hemphill Co | Sinker cap |
US2582465A (en) * | 1949-07-08 | 1952-01-15 | Hemphill Co | Sinker cap and operating mechanism |
US2900837A (en) * | 1956-01-14 | 1959-08-25 | Brandt Kurt | Device for the adjustment of decorative stitch stencil in automatic zig-zag sewing machines |
US3094854A (en) * | 1960-08-08 | 1963-06-25 | Draper Corp | Method of knitting |
-
1960
- 1960-07-18 US US43600A patent/US3200618A/en not_active Expired - Lifetime
-
1961
- 1961-07-04 GB GB24082/61A patent/GB940846A/en not_active Expired
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1665255A (en) * | 1928-04-10 | davis | ||
US763432A (en) * | 1902-09-02 | 1904-06-28 | Heinrich Schwarzenbach | Dobby for looms for weaving. |
US1189220A (en) * | 1913-02-03 | 1916-06-27 | Scott & Williams Inc | Stitch-length mechanism for knitting-machines. |
DE331156C (en) * | 1914-09-16 | 1920-12-30 | Schubert & Salzer Maschinen | Circular knitting machine with sinkers |
US2376044A (en) * | 1943-11-02 | 1945-05-15 | Hemphill Co | Method of knitting |
US2416933A (en) * | 1945-03-14 | 1947-03-04 | Cotton Ltd W | Patterning mechanism |
US2524578A (en) * | 1947-11-22 | 1950-10-03 | Hemphill Co | Stitch regulating mechanism |
US2473503A (en) * | 1948-01-03 | 1949-06-21 | Dexdale Hosiery Mills | Pattern mechanism for knitting machines |
US2582465A (en) * | 1949-07-08 | 1952-01-15 | Hemphill Co | Sinker cap and operating mechanism |
US2580971A (en) * | 1950-03-28 | 1952-01-01 | Hemphill Co | Sinker cap |
US2900837A (en) * | 1956-01-14 | 1959-08-25 | Brandt Kurt | Device for the adjustment of decorative stitch stencil in automatic zig-zag sewing machines |
US3094854A (en) * | 1960-08-08 | 1963-06-25 | Draper Corp | Method of knitting |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3318113A (en) * | 1965-07-12 | 1967-05-09 | Hanes Corp | Method and apparatus for fashioning circular knit fabric |
US4156356A (en) * | 1978-08-28 | 1979-05-29 | Oakdale Knitting Company | Hosiery knitting machine sinker control |
CN107276341A (en) * | 2017-08-03 | 2017-10-20 | 温州北工汽车电器有限公司 | A kind of whole-automatic subcoil coil winding machine |
Also Published As
Publication number | Publication date |
---|---|
GB940846A (en) | 1963-11-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: DELTA ACQUISTION CORPORATION; HORNADAY RD., GREENS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ROCKWELL INTERNATIONAL CORPORATION;REEL/FRAME:004113/0020 Effective date: 19820321 Owner name: DRAPER CORPORATION, Free format text: CHANGE OF NAME;ASSIGNOR:DELTA ACQUISITION CORPORATION,;REEL/FRAME:004097/0735 Effective date: 19820920 |
|
AS | Assignment |
Owner name: CITICORP INDUSTRIAL CREDIT INC., A CORP. OF DE Free format text: SECURITY INTEREST;ASSIGNOR:DRAPER CORPORATION A CORP. OF GA F/K/A DELTA ACQUISITION CORPORATION;REEL/FRAME:004070/0533 Effective date: 19821021 |
|
AS | Assignment |
Owner name: DRAPER CORPORATION, GREENSBORO, NORTH CAROLINA A C Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:CITICORP INDUSTRIAL CREDIT, INC.;REEL/FRAME:004664/0583 Effective date: 19860331 |