GB946955A - Improvements in stitch length control for circular knitting machines - Google Patents
Improvements in stitch length control for circular knitting machinesInfo
- Publication number
- GB946955A GB946955A GB23987/61A GB2398761A GB946955A GB 946955 A GB946955 A GB 946955A GB 23987/61 A GB23987/61 A GB 23987/61A GB 2398761 A GB2398761 A GB 2398761A GB 946955 A GB946955 A GB 946955A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ring
- cam
- drum
- pawl
- roller
- 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
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B9/00—Circular knitting machines with independently-movable needles
- D04B9/02—Circular knitting machines with independently-movable needles with one set of needles
- D04B9/025—Circular knitting machines with independently-movable needles with one set of needles with stitch-length regulation
-
- 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
- D04B15/32—Cam systems or assemblies for operating knitting instruments
- D04B15/327—Cam systems or assemblies for operating knitting instruments for stitch-length regulation
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Machines (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
946,955. Knitting-machines. TEXTILE MACHINE WORKS. July 3, 1961 [July 15, 1960], No.23987/61. Heading D1C. In a multi-feed circular knitting machine having a plurality of knitting stations and a plurality of cam assemblies adjustable between raised and lowered positions to vary the lengths of stitches formed at the said stations, a common control element is provided for simultaneously adjusting the cam assemblies, further means under pattern control operating the control element during knitting. The machine, which may be that disclosed in Specification 790, 141 (Group VIII) comprises a needle cylinder 15 having four feeding stations associated with cam assemblies 16 which include cams 18 displaceable vertically, to adjust the stitch length, by the rotation of a ring 57 disposed around the periphery of a table 40 and engaging shafts 45 to rotate the latter and adjust the positions of the respective cam 18. The ring is moved by linkage engaging, at different times, a left pattern drum 102 or a ring 110 surrounding that drum and driven either by the drum or by a ratchet and pawl device. Each cam assembly (see Fig. 4) comprises cams 18, 22 secured to a block 26 slidable vertically in a bracket 36 and provided with a transverse slot engaged by an eccentric portion at one end of the shaft 45. The other end carries a member 46 which is rotatably adjustable on the shaft by a worm and worm-wheel device. The member 46 carries an adjustable stop abutting a corresponding lug on the ring 57; rotation of the ring thus rotates the shafts 45 of the cam assemblies to raise or lower the cams. A projection 67 on the ring (see Fig. 2) carries a lever 77 connected by a link 80 to one arm 81 of a bell crank lever, the other arm of which carries (see Fig. 10) four adjustable cam followers 91 and a roller follower 107. The four followers 91 are adapted to engage rows of cam lugs 101 on the left pattern drum 102 and, except as described below, one or the other of these followers is always in contact with its associated row to control the length of stitches formed in the stocking fabric. The roller 107 is adapted to ride on a cam ring 110 rotatably mounted on the drum 102 and engaging a braking device 116. Ratchet teeth 121 on the periphery of the cam ring are engagable by a spring biased pawl 122 carried on one arm of a lever 125 rockable by a roller 130 eccentrically disposed on a shaft 132 which rotates at one quarter of the needle cylinder speed. The cam ring carries pawl blanking cam lugs 133, 135 (see Fig. 2) which there render the pawl ineffective. The lever 125 is also rockable by a link 137 connected to one arm of a lever 138 the other arm of which has a rose 141 engageable by one or more cam lugs 142 on a right pattern cylinder 105. Operation. At the start of a stocking knitting cycle the drum 102 and ring member are in the position shown in Fig. 2, when a follower 91 engages its cam lug 101. The cam ring has a low portion 120 opposite the roller 107 and the pawl is disengaged from the teeth 121 by the cam lug 133. As knitting proceeds the drum 102 is indexed relatively to the cam ring until a plate 148 on the former engages a pin 150 on the ring, the latter then moving with the drum to remove the lug 133 from beneath the pawl which then operates to index the ring 110 and gradually decrease the length of the stitches from calf to ankle as roller 107 rides up the rise portion 117 of the ring. As the end of the concentric portion 118 of the ring approaches the roller the cam lug 135 disengages the pawl and the ring stops. At the start of the heel a cam lug 142 of drum 105 rocks lever 138, 141 to move the pawl beyond the lug 135 and advance the ring to its starting position with the low portion 120 again opposite the roller 107, the lugs 101 on the pattern drum 102 then co-operate with followers 91 to control the length of the stitches in the heel of the stocking.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US43142A US3076327A (en) | 1960-07-15 | 1960-07-15 | Stitch length control for circular knitting machines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB946955A true GB946955A (en) | 1964-01-15 |
Family
ID=21925710
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB23987/61A Expired GB946955A (en) | 1960-07-15 | 1961-07-03 | Improvements in stitch length control for circular knitting machines |
Country Status (2)
Country | Link |
---|---|
US (1) | US3076327A (en) |
GB (1) | GB946955A (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1232307B (en) * | 1962-01-11 | 1967-01-12 | Schubert & Salzer Maschinen | Device on circular knitting machines for producing heel or toe bumps |
US3301013A (en) * | 1963-07-12 | 1967-01-31 | Textile Machine Works | Apparatus for forming pouches in circularly knitted fabrics |
US3388563A (en) * | 1965-06-01 | 1968-06-18 | Singer Co | Automatic cam section for knitting machines |
GB1079169A (en) * | 1965-07-17 | 1967-08-16 | Wildt Mellor Bromley Ltd | Improvements in circular knitting machines |
US3386268A (en) * | 1965-11-01 | 1968-06-04 | Singer Co | Stitch cam adjustment and indicator means |
DE1805782A1 (en) * | 1967-11-16 | 1969-07-03 | Elitex Zd Y Textilniho Strojir | Device of a single or multi-system, in particular single-cylinder, circular knitting machine |
DE2343886A1 (en) * | 1973-08-31 | 1975-03-13 | Sulzer Morat Gmbh | MACHINE FOR MANUFACTURING MESHWARE WITH A PILOT OR LOOSE LAYER |
IT1082760B (en) * | 1977-05-18 | 1985-05-21 | Marchisio Giovanni & C S A S | CIRCULAR KNITTING MACHINE WITH STITCH ADJUSTMENT DEVICE ON CYLINDER NEEDLES |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2823529A (en) * | 1956-04-24 | 1958-02-18 | Hemphill Co | Cam assembly for knitting machines |
US2815651A (en) * | 1956-05-07 | 1957-12-10 | Stibbe G & Co Ltd | Stitch cam arrangement for knitting machines |
-
1960
- 1960-07-15 US US43142A patent/US3076327A/en not_active Expired - Lifetime
-
1961
- 1961-07-03 GB GB23987/61A patent/GB946955A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3076327A (en) | 1963-02-05 |
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