US3387466A - Knitting machine with two-section raise cam - Google Patents

Knitting machine with two-section raise cam Download PDF

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Publication number
US3387466A
US3387466A US610604A US61060467A US3387466A US 3387466 A US3387466 A US 3387466A US 610604 A US610604 A US 610604A US 61060467 A US61060467 A US 61060467A US 3387466 A US3387466 A US 3387466A
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United States
Prior art keywords
cam
raise
section
needles
tuck
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Expired - Lifetime
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US610604A
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English (en)
Inventor
Leonard A Beckenstein
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Singer Co
Original Assignee
Singer Co
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Filing date
Publication date
Application filed by Singer Co filed Critical Singer Co
Priority to US610604A priority Critical patent/US3387466A/en
Priority to ES349276A priority patent/ES349276A1/es
Priority to GB2047/68A priority patent/GB1143707A/en
Priority to DE19681635924 priority patent/DE1635924A1/de
Priority to JP43002181A priority patent/JPS4940020B1/ja
Priority to FR1551635D priority patent/FR1551635A/fr
Application granted granted Critical
Publication of US3387466A publication Critical patent/US3387466A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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

Definitions

  • ABSTRACT OF THE DESCLOSURE A cumming arrangement is disclosed wherein the raise cam of an independent needle knitting machine is in two parts, the first serving to raise all needles to tuck level when the second part is set to raise needles to either knit or tuck levels.
  • Field of the invention-This invention provides a circular, independent needle knitting machine of the plural raceway type, being thereby capable of a limited amount of patterning; and which machine is adapted to produce, for example, striped cloth.
  • the invention is particularly directed to raise cams therefor which simultaneously assure needle latch protection and yarn-taking for both tuck and knit cam settings.
  • the needles when raised to their knit levels, would have their respective latches flapping about free to strike and be broken by the latch guard. To position the raise cam closer to the latch guard would protect the needle latches, but then certain stitches would be missed as noted above.
  • Changing the angle of needle rise so that the needles will be at the tuck level just at the point of entering the feed station is, again, a solution to the problem of getting the needles to their tuck levels just prior to passing the latch guard lea-ding edge, but then at the expense of creating still another problem:
  • the knit level so defined would have to be reached along an extremely steep needle rise, whereby the needles would be subject to breaking as their butts struck the steep raise cam.
  • the present invention employs a two-section raise cam.
  • the leading or forward section of the raise cam is designed to raise all needles that it coacts with to tuck level when the trailing section of such raise cam is set to its knit or tuck level, and such leading cam section is of convenient steepness and so positioned that needle latches are always cloth-protected as the needles pass the leading edge of the latch guard.
  • Once the needles are say between the leading and trailing edges of the latch guard, they may be raised to knit level or kept at tuck level depending on the setting of the trailing or main raise cam section.
  • the needles are assured (assuming of course the trailing cam section is set to knit or tuck position) of taking any yarn that is fed across the latch guard; and since the needles are never raised to knit level prior to the leading edge of the latch guard, the needle latches are always adequately protected against breaking.
  • the two-section raise cam is so arrange-d that positioning of the trailing raise cam section to knit or tuck levels automatically effects simultaneous positioning of the leading cam section to tuck level; and that when the trailing raise cam section is set to welt position, the leading or forward raise cam section is likewise effectively set to welt position. In other words, only one adjustment is needed to set two adjustable cams.
  • a principal object of the invention is to provide a knitting machine cam arrangement that assures taking of one or more of a plurality of yarns in such a way that needle damage is prevented.
  • Another object of the invention is to provide a raise cam for a knitting machine having a first and a second section, the first being to raise needles to their tuck levels when the second is set to raise needles to their tuck or knit levels.
  • Another object of the invention is to provide in a plural raceway knitting machine that is adapted to provide a striping or similar capability a raise cam arrangement that assures gainst missing stitches by needles which are raised to their knit or tuck levels, while at the same time assuring needle latch protection.
  • Still another object of the invention is to provide a raise cam having a leading and a trailing section, the trailing section being adjustable to knit, tuck and welt settings, and the leading section being positionable thereby to tuck position when the trailing section is set to knit or tuck position, and being positionable to welt position when the trailing section is also set to its Welt position.
  • FIG. 1 is an elevational view showing the rear face of a pair of cam blocks from a plural raceway knitting machine, showing raise cams according to the invention in their knit, tuck and welt positions; and showing schematically a corresponding needle wave,
  • FIG. 2 is a perspective view of a cam block of the type shown in FIG. 1, being useful for understanding the construction of the presently. preferred embodiment of the invention
  • FIG. 3 is a perspective view showing the front face of the cam block depicted in FIG. 2, and
  • FIG. 4 is a schematic arrangement showing a raise cam constituting a species of the invention.
  • the cam blocks ill, 12 are provided with cams at three distinct: levels 16, 18, Zll.
  • the came at the level '18 are designed to cooperate with and raise needles 148, whereas the cams at the level 16 are designed to cooperate with and raise needles 14L, such needles 14L being deliberately shown in phantom because the needle wave as indicated in PEG. 1 is effected solely by needles such as the needles 148.
  • the cams at the level 20 commonly lower whatever needles which have been raised, whether these needles be the needles 148 or the needles ML.
  • the cam blocks ill, 12 are identical, being respectively provided each with a stitch cam 22, 24!- and cover cams 26, 25.
  • the stitch cams 22, 24 are vertically positionable for stitch length variations, in a manner as indicated in copending application Ser. No. 505,853, by means of an adjustment screw (36, FIG. 5), such stitch length variability being in no way part of this invention.
  • An indicator 31 serves to provide a visual representation of the established stitch length setting.
  • the stitch earns 22, 24 are each respectively secured to supports 32, 34 positionable within respective channels 36, 38; and the cover earns 26, 28 are secured directly to the blocks 1d, 12.
  • the needle raise cams at the level 18 have respective first, or leading, cam sections 40, 42, and respective sec- 0nd, or trailing, cam sections 44, 46.
  • the needle raise cams at the level 16 have respective first, or leading, cam sections 48, 50, and respective second, or trailing, cam sections 52, 54.
  • Cams 56 through 63 are fixedly secured covered cams that assure some restraint on needle travel and form no part of the present invention.
  • the trailing raise cam sections 44, 46 are pivotally supported by, but fixedly held on, respective shafts 64, 66 that mount within the cam blocks 10, 12.
  • the shafts 64, 66 protrude from the front face of their respective blocks, having secured thereto adjustment handles (68, FIG. 3).
  • Each adjustment handle 68 is provided with a pin (the head 69 of which is alone shown) which may be seated in one of the three cam set positions, viz, K, T, W respectively for knitting, tucking, and welting.
  • the trailing raise cam sections 52, 54 are pivotally supported by, and fixedly held on, respective shafts 7t 72 that mount within the cam blocks 16, 12, the shafts 7t), '72 protruding from the front of their respective blocks and having adjustment handles (74, FIG. 3) secured to them.
  • the handle 74 is provided with 'a pin (the head being indicated at 76) that may be set to knit, tuck or welt positions.
  • each trailing raise cam section 44, 46, 52, 54 is pivotally supported on a shaft, so too the leading raise cam sections 40, 42, 48, 51) are fixed to, but pivotally supported on, shafts 78, 21), S2, 84 respectively, such shafts being axially prevented from moving by means of collars (86, 88 FIG. 3) held in place by set screws 90, 92.
  • the positioning of the trailing raise cam sections 44, 46, S2, 54, by means of their adjustment handles 68, 74 to knit positions automatically sets their respective leading raise cam sections to tuck positions; positioning the trailing raise cam sections to tuck positions automatically sets the corresponding leading raise cam sections also to their respective tuck positions; and positioning the trailing raise cam sections to welt positions, effectively sets their respective leading raise cams also to welt positions.
  • This cam tracking is brought about in any given pair of raise cam sections by cooperation between a nose on one section and a pin and recess on the other cam section.
  • FIG. 1 shows the lead cam section 40 having a recess 94 that is adapted to accommodate a nose 96 on the trailing cam section 44.
  • leading cam section 42 is provided with a recess 98, and the trailing cam section 46 with a nose 100; the leading cam section 48 with a recess 102, and the trailing cam section 52 with a nose 104; the leading cam section 50 with a recess 106 and the trailing cam section 54 with a nose 108.
  • Emanating transversely to, but contained within each of the recesses 94, 93, 162, 156 are respective pins 116, 112, 114, 116.
  • needles 14 which get acted upon by the raise c'am sections 42, 46 are elevated to tuck level by the leading cam section 42, and are unaffected by the trailing cam section 46.
  • the pin 1% shifts off the top of the nose 96 as the nose 96 embraces the recess 94, and in so shifting moves to the right side of the nose 96. Since the nose 96 moves into the recess 94 as the trailing cam section 44 is moved to knit position, the leading cam section 40 is not thereby moved off its tuck level.
  • the latch guard 11S presents yarn from one of four yarn fingers 122, 124, 126, 127 which are selectively indexed into yarn feeding position by means not constituting a part of this invention. As indicated by FIG. 1, yarn Y is fed by the feed finger 122 which had been lowered to yarn feeding position. The needles 14 are raised by the lead cam section 40 to their tuck level T along a line A prior to their passing the leading edge 118L of the latch guard.
  • the latches 128 of the needles 14 are protected within, and by, the cloth prior to their passing the latch guard; and are protected by the latch guard itself once the needles are raised to their knit levels K. Since the hooks of the needles 14 are above the level of the yarn Y draped across the latch guard 118, and because the needle latches are open, the needles assuredly take the yarn Y and form stitches. Were the cam section 44 to have been set to tuck position, the needles 14 would parade past the latch guard 118 as indicated in relation to the latch guard 120, and again they would assuredly take yarn (by virtue of being elevated to tuck level prior to their passing the leading edge of the latch guard), this time to form tuck stitches.
  • the needles so tucking would have their latches 123 prevented from opening by the latch guard and, during the feeding of the yam Y, would clearly miss taking same with attendantly dropped stitches resulting.
  • leading cam section 150 pivotally supported at 152 and having a nose 154 that is adapted to be accommodated by a recess 158 in a trailing, but settable, cam section 160.
  • the trailing cam section is pivotable at 162 and has a transverse pin 164 in its recess which is adapted to cooperate with the nose 164 as above indicated. While the cams of FIG. 4 are indicated in their tuck positions, rotation of the cam section 160 about its pivot 162 causes the nose 1541 to seat on either side of the pin for respectively knit and welt cam settings.
  • a knitting machine having a station (122, 124, 126, 128) for feeding one or more of a plurality of yarns to the needles (1d) of said machine, said machine having a raise cam and a stitch draw cam (24), the improvement wherein said raise cam (24) comprises a first section (40) and a second section (44) respectively positioned in the direction of needle travel,
  • said knitting machine includes a plurality of raceways (16, 18), and wherein said two-section raise cam is contained within and forms part of one of said raceways.
  • said knitting machine employs latch needles (14), and includes a latch guard (118) therefor, said latch guard being adapted to distribute said yarns thereacross to said needles (14), and wherein said first cam section (40) is adapted to raise said needles (14) to tuck level prior to their passing approximately the leading edge 01 the latch guard when said second cam section (44) is set to knit and tuck positions.
  • said knitting machine includes a plurality of raceways (16, 18) wherein each of said raceways includes a plurality of cams (40, dd42, a6 and 48, 5250, 54) like said twoseetion raise earn, wherein said machine employs latch needles (l4), and wherein said machine includes a plurality of latch guards (118, 128) adapted to protect the latches (128) of those needles (14) which are raised by the raise cams of said raceways (16, 18), said latch guards being adapted to distribute respective pluralities of yarns (122, 124, 126, 123) thereacross, and said latch guards being so disposed with respect to said raise cams that said needles are raised to tuck level at approximately the leading edges (e.g., 11815) of said latch guards when the second sections of said raise cams are set to knit and tuck positions.
  • the apparatus of claim 5 including means for pivotally supporting both of said raise cam sections and wherein one of the sections of said two-section raise cam is provided with a nose (96), and the other section thereof is provided with a recess (94) having a transverse pin (110) therein, said pin (110) being so positioned in said recess that said pin (110) may seat to either side of said nose (96) when said second section of said raise cam is set to knit and welt positions, and when said second section is set to tuck position, said pin (110) seats atop said nose (96).
  • the apparatus of claim 6 including means (68) coupled to said second section of said raise cam for manually positioning said second section to knit, tuck or welt positions, whereby said first section of said raise cam assumes a tuck or welt position when said second section is respectively set to knit and tuck, or welt positions.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Knitting Of Fabric (AREA)
US610604A 1967-01-20 1967-01-20 Knitting machine with two-section raise cam Expired - Lifetime US3387466A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US610604A US3387466A (en) 1967-01-20 1967-01-20 Knitting machine with two-section raise cam
ES349276A ES349276A1 (es) 1967-01-20 1968-01-13 Una maquina de hacer punto.
GB2047/68A GB1143707A (en) 1967-01-20 1968-01-15 Knitting machine with two-section raise cam
DE19681635924 DE1635924A1 (de) 1967-01-20 1968-01-17 Strickmaschine mit zweiteiligen Hebern
JP43002181A JPS4940020B1 (es) 1967-01-20 1968-01-17
FR1551635D FR1551635A (es) 1967-01-20 1968-01-19

Applications Claiming Priority (1)

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US610604A US3387466A (en) 1967-01-20 1967-01-20 Knitting machine with two-section raise cam

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US3387466A true US3387466A (en) 1968-06-11

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US610604A Expired - Lifetime US3387466A (en) 1967-01-20 1967-01-20 Knitting machine with two-section raise cam

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US (1) US3387466A (es)
JP (1) JPS4940020B1 (es)
DE (1) DE1635924A1 (es)
ES (1) ES349276A1 (es)
FR (1) FR1551635A (es)
GB (1) GB1143707A (es)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3456460A (en) * 1967-04-11 1969-07-22 Singer Co Cylinder and dial knitting machine
US3520153A (en) * 1968-05-02 1970-07-14 Marx Strickmaschbau Karl Cam system,especially for multi-feed circular knitting machines
US3709004A (en) * 1970-11-02 1973-01-09 Warner Swasey Co Cam box for knitting machine
US3791173A (en) * 1972-03-23 1974-02-12 Oxford Industries Method and apparatus for forming random stripe in knitted garments
US3967468A (en) * 1975-10-14 1976-07-06 The Singer Company Circular knitting machine for producing interlock fabric
US4068498A (en) * 1974-10-15 1978-01-17 Asa S.A. Interlocking cams
US4236389A (en) * 1977-12-16 1980-12-02 Macchine Tessili Circolari Matec S.P.A. Circular knitting machine for stockings or the like, having raising cams which can be moved both radially and angularly
US4386507A (en) * 1979-07-12 1983-06-07 Hans Maisel Wing cam guide for knitting machine locks
US5417086A (en) * 1992-11-28 1995-05-23 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Lock arrangement for a knitting machine

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US390965A (en) * 1888-10-09 Circular-knitting machine
US1651316A (en) * 1926-03-05 1927-11-29 Bell George Knitting machine
US1718648A (en) * 1926-09-17 1929-06-25 Israelson Fritz Circular-knitting machine
GB388829A (en) * 1931-09-09 1933-03-09 Wildt & Co Ltd Improvements in or relating to knitting machines
US2260579A (en) * 1939-08-15 1941-10-28 Jacquard Knitting Machine Co Inc Knitting machine
US3012424A (en) * 1958-02-13 1961-12-12 Wullimann Max Lock for a knitting machine
US3299673A (en) * 1964-01-07 1967-01-24 Wildman Jacquard Co Cam control means for knitting machines
US3310962A (en) * 1964-05-06 1967-03-28 Singer Co Circular knitting machine
US3335581A (en) * 1965-03-03 1967-08-15 Monarch Internat Ltd Cam means for circular knitting machines

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US390965A (en) * 1888-10-09 Circular-knitting machine
US1651316A (en) * 1926-03-05 1927-11-29 Bell George Knitting machine
US1718648A (en) * 1926-09-17 1929-06-25 Israelson Fritz Circular-knitting machine
GB388829A (en) * 1931-09-09 1933-03-09 Wildt & Co Ltd Improvements in or relating to knitting machines
US2260579A (en) * 1939-08-15 1941-10-28 Jacquard Knitting Machine Co Inc Knitting machine
US3012424A (en) * 1958-02-13 1961-12-12 Wullimann Max Lock for a knitting machine
US3299673A (en) * 1964-01-07 1967-01-24 Wildman Jacquard Co Cam control means for knitting machines
US3310962A (en) * 1964-05-06 1967-03-28 Singer Co Circular knitting machine
US3335581A (en) * 1965-03-03 1967-08-15 Monarch Internat Ltd Cam means for circular knitting machines

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3456460A (en) * 1967-04-11 1969-07-22 Singer Co Cylinder and dial knitting machine
US3520153A (en) * 1968-05-02 1970-07-14 Marx Strickmaschbau Karl Cam system,especially for multi-feed circular knitting machines
US3709004A (en) * 1970-11-02 1973-01-09 Warner Swasey Co Cam box for knitting machine
US3791173A (en) * 1972-03-23 1974-02-12 Oxford Industries Method and apparatus for forming random stripe in knitted garments
US4068498A (en) * 1974-10-15 1978-01-17 Asa S.A. Interlocking cams
US3967468A (en) * 1975-10-14 1976-07-06 The Singer Company Circular knitting machine for producing interlock fabric
US4236389A (en) * 1977-12-16 1980-12-02 Macchine Tessili Circolari Matec S.P.A. Circular knitting machine for stockings or the like, having raising cams which can be moved both radially and angularly
US4386507A (en) * 1979-07-12 1983-06-07 Hans Maisel Wing cam guide for knitting machine locks
US5417086A (en) * 1992-11-28 1995-05-23 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Lock arrangement for a knitting machine

Also Published As

Publication number Publication date
FR1551635A (es) 1968-12-27
JPS4940020B1 (es) 1974-10-30
ES349276A1 (es) 1969-04-01
DE1635924A1 (de) 1971-06-09
GB1143707A (en) 1969-02-26

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