GB2193231A - Single-cylinder circular knitting machine for the production of hosiery goods - Google Patents

Description

GB2193231A 1 SPECIFICATION without the assistance of the jacks. Further

mutual offset of the needle cams and the Single-cylinder circular knitting machine for cams controlling the jacks enables slow raising the production of hoisery goods and sinking of the jacks and in the knitting feeds where reinforced stitches are knitted it The invention relates to a single-cylinder circu- solves also the actual problem of selection of lar knitting machine for the production of ho- needles, all that without interference into sym siery and the like goods. metrical position of the cams to knit a recipro A double-feed single-cylinder circular knitting catory heel or toe in two knitting feeds.

machine for the production of ladies hosiery 75 An embodiment of the invention will now goods is known, where one feed is adapted be described, by way of example, with refer for reciprocatory knitting of the heel pouch or ence to the accompanying drawings in which:

of the toe. In said main knitting feed it is Fig 1 is a partial axial section of the needle possible to knit tuck stitches, therefore before cylinder with illustrated location and control of said feed a system of jack selection is lo- 80 knitting elements of the first knitting feed; cated. The second knitting feed is adapted Fig. 2 is a schematically illustrated cam sys only for rotary knitting, that is to knit plain tem of a double-feed knitting machine where stitches. Both knitting feeds in cooperation the cams operating during reciprocatory run can knit for example micromesh structures, are drawn in full lines; and etc. In the main knitting feed it is possible to 85 Fig. 3 is a schematically illustrated cam sys knit also reinforced courses, but of course to tem of a double-feed knitting machine with the the detriment of patterning possibilities in tuck cams operating during rotary run.

structures. A known single-cylinder circular knitting ma The disadvantages of the above mentioned chine for the production of hosiery goods is machine is in the limitation of structural and 90 provided with a needle cylinder 1 in the longi patterning possibilities which are concentrated tudinal tricks of which there are located to only one knitting feed and further in that needles 2 and under them jacks 3. Knock-over reciprocatory knitting is performed only in one sinkers 4 located in a sinker ring 5 cooperate knitting feed which on the one hand limits the with needles 2 when knitting. The cams are productivity and on the other hand the quality 95 arranged in two knitting feeds to control the of the fabric due to the change from double- needles 2 and jacks 3. In the track of the feed to single-feed knitting before or after needles 2 in the first knitting feed there are knitting the heel. the left stitch cam 6, the right stitch cam 7 The object of the invention is to eliminate and central cam 8. Between the right and the the above mentioned disadvantages and more- 100 left stitch cams 6,7 there is arranged under over to create a machine suitable for high- the central cam 8 a radially movable raising speed knitting. cam 9 reaching partially under the right stitch According to the invention there is provided cam 7 and serving to raise needles 2 into the a single-cylinder circular knitting machine for clearing position. The right stitch cam 7 is the production of hosiery and the like goods 105 also radially movable. Central cam 8 is axially with two knitting feeds adapted for reciproca- movable. In the second feed it is again the tory knitting provided with left and right stitch left stitch cam 10, the right stitch cam 11, cams and a central cam and further cams to central. cam 12 and between said stitch cams control needles and jacks to knit plain and 10, 11 a raising cam 13 and still before the tuck structures with the possibility of reinforc- 110 right stitch cam 11 there is arranged a raising ing, etc., wherein in one knitting feed between cam 14. The right stitch cam 11 is radially the left and the right stitch cams there is armovable. Central cam 12 is also axially mov ranged a movable raising cam of needles into able. Raising cams 13 and 14 are also radially the clearing position and before it in the track movable and serve to raise the needles into of jacks there are arranged raising cams to 115 the clearing position. Raising cam 13 is select the jacks to knit tuck structures, while steeper than raising cam 14 because it is in the second knittin ' g feed there is also ar- used when knitting reinforced patterns due to ranged between the, left and the right stitch the track of the needles 2 and laying the cams of the needles. a movable raising cam thread in cooperation with raising cam 14 the raising the needles into the clearing position 120 slope of which is slow and is designed and another movable raising cam raising the namely to knit plain structures at high speeds.

needles into the clearing position is arranged Further there are arranged radially movable tri before it, while under it there are arranged angular raising cams 15,16, 17 which are de raising cams to select the jacks to knit rein- signed to raise the needles 2 from sunk posi forced structures. - 125 tions into the zones of activity of said right An advantage of the invention is the fact and left stitch cams 6,7,10,11 of the needles that mutual arrangement of the cams enables 2. Triangular raising cams 16 and 17 reach knitting of unlimited tuck and reinforced struc- with one of their ends under the right stitch tures and further the arrangement of the nee- cams 7 and 11 and are formed here like their dle cams enables knitting of plain structure 130 counter cams during reciprocatory knitting of 2 GB2 193231A 2 the machine. The other cams, e.g. for double B2.

welt and further known narrowers and lower- To knit fix set-out tuck patterns in both ing cams are not shown because they are not knitting feeds it is necessary to put the raising a characteristic feature of the invention. cams 19 and 23 and tuck raising cams 20 In the track of the jacks 3 before the first 70 and 22 in the track of the butts 32 and 33 of knitting feed under the triangular raising cam the jacks 3 into operation.

16 there is arranged a set of raising cams 18 When knitting reinforced patterns the set of designed to cooperate with patterning butts raising cams 21 in the track of patterning 31 of jacks 3. Further in the track of the butts butts 31 of jacks 3 and the raising cam 13 in 32 of jacks 3 there is arranged a radially mov- 75 the track of the butts of needles 2 in the able cam 19 and in the track of butts 33 a second knitting feed are put in operation.

tuck raising cam 20. A set of raising cams 18 Raising cams 21 then according to the pattern and raising cam 19 are designed to raise fhe raise the jacks 3 and thus the needles 2 so needles 2 into the clearing position. that their butts move along track A2. The Also before the second knitting feed under 80 other needles 2 or their butts are raised along the raising cam 14 there is arranged a set of the track F2 by the raising cam 13. To knit fix raising cams 21 designed to cooperate with set-out patterns instead of raising cams 21 butts 32 of the jacks to select reinforced pat- the raising cam 23 is put in operation. In the terns. In the track of the butts 32 and 33 first knitting feed then plain stitches or tuck there are located a radially movable tuck cam 85 patterns are knitted by means of the cams as 22 and a raising cam 23 to raise the needles described above.

into the clearing position. During reciprocatory knitting the fabric is Further there are arranged upper and lower produced in a known way only by means of cams rings 24 and 25 to control the jacks 3. the cams controlling the needles 2 in both When the machine is knitting, the operation 90 knitting feeds. The left and the right stitch of the above described means is as follows. cams 6,10,7 and 11, central cams 8 and 12 During rotary knitting the left stitch cams 7 and triangular cams 15,16, 17 are in operation.

and 11 and triangular raising cams 15,16,17 Raising cams 9, 13 and 14 are out of oper are out of operation, that is the cams the ation. In the direction corresponding to rotary operation of which is necessary only during 95 knitting the butts of the needles 2 move along reciprocatory run of the machine. If plain fabric the track X (Fig. 2), in opposite direction of is knitted in both knitting feeds only the rais- rotation they move along the track Y. Central ing cams 9 and 14 are in operation and only cams 8 and 12 are contrary to the phase of the needles 2 are knitting while the jacks 3 rotary knitting lowered to ensure height posipass horizontally. Needles 2 or their butts are 100 tions of the needles 2, to avoid running of the slowly raised along tracks Al and A2 in indistitches on the side needles of a heel course.

vidual knitting feeds. When knitting floated Triangular raising cams 15, 16,17 serve to structures for example in the distribution 1:1, raise the needles 2 from sunk position onto in the track of needles 2 only the stitch cams the raising edges of said stitch cams 6 and 10 are in operation and selection of 105 6,7,10,17, while raising cams 16 and 17 needles 2 is performed by means of jacks 3 serve also like counter cams of the right stitch by the raising cams 19 or 23 according to the cams 16 and 17 for reciprocatory direction of set-out of the butts 32. Jacks 3 are lowered knitting.

back again by lowering edges of the upper

Claims (7)

1. cam ring 24. Selected butts 32 move along 110 CLAIMS tracks 131 and B2 and

   the butts of the needles 1. A single-cylinder circular knitting machine -1 2 along tracks C1 and A2. for the production of hosiery and the like When knitting tuck patterns the selection is goods with two knitting feeds adapted for re performed again only by means of jacks 3. In ciprocatory knitting provided with left and the first knitting feed the tuck raising cam 20 115 right stitch cams and a central cam and fur and the set of raising cams 18 are in oper- ther cams to control needles and jacks to knit ation. In the second knitting feed only the plain and tuck structures with the possibility raising cam 23 is in operation. That is in the of reinforcing, etc., wherein in one knitting first knitting feed according to the set-out of feed between the left and the right stitch the patterning butts 31 the jacks 3 or needles 120 cams there is arranged a movable raising cam 2 are raised into the clearing position, while of needles into the clearing position and be the butts of the needles move along the track fore it in the track of jacks there are arranged C1. Those jacks 3-which are not raised by the raising cams to select the jacks to knit tuck raising cam 18 are raised by their butts 33 structures, while in the second knitting feed along the track D1 by tuck raising cam 20, 125 there is also arranged between the left and while the butts of the needles 2 move along the right stitch cams of the needles a movable track El and needles 2 knit tuck stitches. In raising cam raising the needles into the clear the second knitting feed only plain stitches are ing position and another movable raising cam produced, while needles 2 are raised by the raising the needles into the clearing position is jacks, whose butts 32 move along the track 130 arranged before it, while under it there are 3 GB2193231A arranged raising cams to select the jacks to knit reinforced structures.
2. 2. A single-cylinder circular knitting machine according to Claim 1, wherein -above the rais- ing cams to select the jacks to knit tuck structures in the track of the needles there is arranged a triangular raising cam to raise the needles onto the raising edge of the neighbouring stitch cams in both knitting feeds.
3. 3. A single-cylinder circular knitting machine according to Claim 2, wherein in the track of the needles of the second knitting feed between the movable raising cams raising the needles into the clearing position there is ar- ranged a movable triangular raising cam to raise the needles onto the raising edge of the left stitch cam of the second knitting feed.
4. 4. A single-cylinder circular knitting machine according to Claim 3, wherein the triangular raising cams reach partially under the right stitch cams of both knitting feeds, where they form their counter cams.
5. 5. A single-cylinder circular knitting machine according to Claim 4, wherein in the second knitting feed between the left and the right stitch cams arranged movable raising cam raising the needles into the clearing position is steeper than the raising cams arranged before it and raising the needles into the clearing po- sition.
6. 6. A single-cylinder circular knitting machine according to Claim 1, wherein the central cams in both knitting feeds are axially mov able.
7. 7. A single-cylinder circular knitting machine substantially as hereinbefore described with reference to the accompanying drawings.

   Published 1988 at The Patent office, State House, 66/71 High Holborn, London WC 1 R 4TP. Further copies may be obtained from The Patent Office, Sales Branch, St Mary Cray, Orpington, Kent BF15 3RD.

   Printed by Burgess & Son (Abingdon) Ltd. Con. 1/87.