US3568470A - Fall-plate arrangement for a raschel knitting machine - Google Patents

Fall-plate arrangement for a raschel knitting machine Download PDF

Info

Publication number
US3568470A
US3568470A US772139A US3568470DA US3568470A US 3568470 A US3568470 A US 3568470A US 772139 A US772139 A US 772139A US 3568470D A US3568470D A US 3568470DA US 3568470 A US3568470 A US 3568470A
Authority
US
United States
Prior art keywords
fall
plate
needles
plane
knitting machine
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
US772139A
Other languages
English (en)
Inventor
Karl Kohl
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 US3568470A publication Critical patent/US3568470A/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
    • D04B23/00—Flat warp knitting machines
    • D04B23/22—Flat warp knitting machines with special thread-guiding means
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/06—Needle bars; Sinker bars
    • D04B27/08—Driving devices therefor

Definitions

  • This invention relates to raschel knitting machines equipped with a fall-plate, and particularly to a fall-plate mechanism which moves the. fall-plate relative to the knitting needles during the operation of the machine.
  • Fall-plates are mounted on the guide bar hangers of known raschel knitting machines in such a manner that the plate is approximately parallel to the common plane of the knitting needles in the median position of the guide bar hangers.
  • the yarn guides are swung through the needles by the oscillating movement of the hanger transversely of the needle plane, the lower operating edge of the fall-plate moves transversely of that plane over a distance which is directly related to the amplitude of the guide bar oscillation.
  • the fall-plate engages yarns threaded on front yarn guides and wrapped about the needles to push these yarns down over the open latches of the knitting needles and on to the fabric loops on the needle stems while the needles are in their top position.
  • the operating lower edge of the fall-plate moves laterally away from the needle plane over a distance sufficient for the transverse component of the tension in the engaged yarns to cause more friction between yarn and needle stem than can be overcome by the tension component which is longitudinal relative to the needles, and the wrapped yarns are not pushed down from the latches.
  • the primary object of this invention is the provision of a fall-plate arrangement which permits the guide bar hangers to oscillate continuously during normal knitting operation, yet keeps the operating edge of the fall-plate near the needle plane during the downward stroke of the plate, that is, during the movement of the plate in a direction toward the knitting needles.
  • the fall-plate mechanism of the invention is equipped with guiding devices which guide the operating edge of the fall-plate in a path substantially parallel to the common plane of the knitting needles during the oscillating movement of the fall-plate with the guide bar hangers on which the fall plate is mounted.
  • the distance between the path of the fall-plate edge and the needle plane is readily selected with such an arrangement to tension the front guide yarns engaged by the fall-plate edge longitudinally of the needle elongation.
  • FIG. 1 shows operating elements of a raschel knitting machine of the invention in a perspective view
  • FIG. 2 illustrates the fall-plate mechanism of the machine of FIG. 1 in fragmentary front elevation
  • FIGS. 2a and 2b show details of the fall-plate mechanism in front elevation and plan view respectively.
  • FIG. 3 shows the fall-plate and a needle of the same machine in a perspective view.
  • the drawing shows as much of an otherwise conventional raschel knitting machine as is needed for an understanding of this invention.
  • the guide bar rocker shaft 10 of the machine is journaled on the supporting machine frame 11 by means of bearings 12 of which only one is shown in FIG. 1.
  • a radial swing lever 13 fixedly fastened to the shaft 10 oscillates the shaft 10 when a connecting rod 15 hinged to the lever 13 reciprocates longitudinally, as indicated by the arrow 14.
  • the rod 15 is pivotally attached to a transmission lever 16 fulcrumed on a stationary shaft 17 and hingedly connected by a push rod 18 to a truck arm 19 pivoted on a shaft 20 which is an element of the stationary machine frame.
  • the truck arm 19 is oscillated on the shaft 20 by an eccentric cam 21 fixedly mounted on the main camshaft 22 of the machine.
  • Guide bar hangers 23 of which only one is seen in the drawing, are mounted on the shaft 10 in axially spaced relationship by means of brackets 24. F our guide bars 25a- 25d are supported on the hangers 23 and are moved longitudinally during knitting by the non-illustrated pattern mechanism of the machine. The guide bars carry partly illustrated rows of yarn guides 26. The structure described so far is conventional.
  • the hangers 23 also support a fall-plate bar 27 between the yarn guide 250 and 25d, and a fall plate 28 which is a thin piece of sheet metal extending over the entire width of the knitting machine and fixedly fastened to the bar 27.
  • rods 29, of which only one is seen in the drawing extend upwardly from the bar 27, and each rod 29 is slidably guided parallel to the plane of the fall-plate 28 in a ball bearing 30 on a yoke 31 fixedly fastened to a guide bar hanger 23, the direction of rod movement being indicated by an arrow 32.
  • the fall-plate bar 27 is suspended from the rods 29 by means of short spiral springs 33.
  • a link 34 is hinged to the upper end of each rod 29 and to one arm of an angle lever 35 whose other arm is pivoted to the yoke 31, and whose fulcrum is pivoted parallel to control bars 36a, 36b, parallel to the shaft 10 and guided by the levers 35 for longitudinal reciprocating movement, as indicated by the arrow 37 Reverting to FIG. 1, it is seen that one longitudinal end of each control bar 36a, 36b, is hingedly connected by a universal joint 38a to a push rod 38 which is reciprocated longitudinally by a rocker 39 attached to the machine frame 11 by a pivot pin 40.
  • a connecting rod 41 hingedly couples the rocker 39 to a truck arm 42 pivotally mounted on the shaft 20 and oscillated during normal operation of the machine by an eccentric cam 21a on the camshaft 22.
  • FIG. 1 also shows the conventional needle mechanism of the machine.
  • the knitting needles 44 are mounted in a row on the single needle bar 43 which is moved up and down by a connecting rod 45 hinged to a cam-operated truck arm 46 mounted on the shaft 20.
  • FIG. 3 The operation of the afore-described apparatus is shown in FIG. 3.
  • the lower operating edge 47 of the fall plate 28 is moved between the fully drawn lowermost position of the fall plate 28 and the topmost position, indicated in broken lines, in the direction of the arrow 48 while the guide bar hanger and the associated front yarn guide 25d swing, as is shown by the arrow 49.
  • the path 51 of the edge 47 is practically parallel to the plane 50.
  • the distance of the edge 47 from the needle axes thus remains practically constant and very short during the downward movement of the fall-plate.
  • the tension of the non-illustrated yarn threaded through the front yarn guide 25d thus has a re- 4 dominant component longitudinal of the knitting needle stern.
  • a guide bar mechanism including a hanger, a plurality of guide bars elongated in a direction parallel to said plane and mounted on said hanger, means for oscillating said hanger transversely of said plane about a median position thereof, a fall-plate mounted on said hanger for oscillating movement therewith, said fall-plate having an operating edge parallel to said plane and adjacent said needles, and actuating means for moving said fall-plate relative to said hanger in a direction toward and away from said needles, the improvement which comprises mounting means mounting means mounting said fall-plate on said hanger in a position in which said plate is obliquely inclined relative to said common plane during said moving of said fallplate by said actuating means.
  • said actuating means including guide means guiding said operating edge in a path substantially parallel to said plane during the oscillating movement of said fall-plate with said hanger and while said plate is obliquely inclined relative to said common plane.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US772139A 1967-11-03 1968-10-31 Fall-plate arrangement for a raschel knitting machine Expired - Lifetime US3568470A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1635874 1967-11-03

Publications (1)

Publication Number Publication Date
US3568470A true US3568470A (en) 1971-03-09

Family

ID=5683743

Family Applications (1)

Application Number Title Priority Date Filing Date
US772139A Expired - Lifetime US3568470A (en) 1967-11-03 1968-10-31 Fall-plate arrangement for a raschel knitting machine

Country Status (2)

Country Link
US (1) US3568470A (enrdf_load_stackoverflow)
GB (1) GB1234450A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987648A (en) * 1975-07-21 1976-10-26 J. P. Stevens & Co., Inc. Drive for full width shogging movement of the thread guide bar on raschel knitting machines
US4224809A (en) * 1978-07-13 1980-09-30 Karl Mayer Textilmaschinenfabrik Gmbh Warp knitting machines with slider needles and a fall plate
US20070214844A1 (en) * 2006-03-16 2007-09-20 Santoni S.P.A. Linear knitting machine
CN101792952A (zh) * 2010-04-23 2010-08-04 江苏技术师范学院 电脑型经编机的压纱板运动装置
CN102182005A (zh) * 2011-04-27 2011-09-14 常州市润源经编机械有限公司 压纱型经编机的压纱板运动机构
EP2679712A1 (de) * 2012-06-27 2014-01-01 Karl Mayer Textilmaschinenfabrik GmbH Fallblechanordnung einer Kettenwirkmaschine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD286940A7 (de) * 1987-10-09 1991-02-14 ������@�K@�����k�� Kettenwirkmaschine, insbesondere naehwirkmaschine

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987648A (en) * 1975-07-21 1976-10-26 J. P. Stevens & Co., Inc. Drive for full width shogging movement of the thread guide bar on raschel knitting machines
US4224809A (en) * 1978-07-13 1980-09-30 Karl Mayer Textilmaschinenfabrik Gmbh Warp knitting machines with slider needles and a fall plate
EP2312031A1 (en) 2006-03-16 2011-04-20 SANTONI S.p.A. Flat warp knitting machine
US7299661B1 (en) * 2006-03-16 2007-11-27 Santoni S.P.A. Linear knitting machine
EP2267205A1 (en) 2006-03-16 2010-12-29 SANTONI S.p.A. Flat warp knitting machine
US20070214844A1 (en) * 2006-03-16 2007-09-20 Santoni S.P.A. Linear knitting machine
EP2314745A1 (en) 2006-03-16 2011-04-27 SANTONI S.p.A. Flat warp knitting machine
CN101792952A (zh) * 2010-04-23 2010-08-04 江苏技术师范学院 电脑型经编机的压纱板运动装置
CN102182005A (zh) * 2011-04-27 2011-09-14 常州市润源经编机械有限公司 压纱型经编机的压纱板运动机构
CN102182005B (zh) * 2011-04-27 2012-08-29 常州市润源经编机械有限公司 压纱型经编机的压纱板运动机构
EP2679712A1 (de) * 2012-06-27 2014-01-01 Karl Mayer Textilmaschinenfabrik GmbH Fallblechanordnung einer Kettenwirkmaschine
CN103510271A (zh) * 2012-06-27 2014-01-15 卡尔迈尔纺织机械制造有限公司 经编机的压纱板组件
CN103510271B (zh) * 2012-06-27 2016-02-03 卡尔迈尔纺织机械制造有限公司 经编机的压纱板组件

Also Published As

Publication number Publication date
GB1234450A (enrdf_load_stackoverflow) 1971-06-03

Similar Documents

Publication Publication Date Title
US3802226A (en) Bearded needle warp knitting machine
US2155146A (en) Knitting machinery
US3587254A (en) Guide bar swinging mechanism for a warp knitting machine
US3568470A (en) Fall-plate arrangement for a raschel knitting machine
US2292287A (en) Warp knitting machine
US3221520A (en) Double-needle-bed warp knitting machine
US2339153A (en) Warp knitting machine
GB488613A (en) Improvements in knitting machinery
US3491558A (en) Needle mechanism for a raschel warp knitting and method of operating the same
US3079778A (en) Method and apparatus for quilting and interlacing of textile materials
US3099921A (en) Warp knitting machine
US3279219A (en) Warp knitting machine
US3050972A (en) Take-up mechanism for knitting machines
US2625023A (en) Warp guide bar operating mechanism
US2451499A (en) Warp knitting machine
US3561233A (en) Fall plate mechanism
US2733583A (en) Knitting machine
US3464236A (en) Knitting machine employing compensating motion for knitting effect thread
US2451498A (en) Flat warp knitting machine
US3403536A (en) Yarn feeding means for raschel knitting machines
US2921452A (en) Knitting machines and operating mechanism therefor
US3063273A (en) Raschel warp knitting machine
US3491557A (en) Needle bar mechanism for a warp knitting machine
US2871686A (en) Warp knitting machinery
US2476344A (en) Knitting machine