US3561233A - Fall plate mechanism - Google Patents

Fall plate mechanism Download PDF

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Publication number
US3561233A
US3561233A US841853A US3561233DA US3561233A US 3561233 A US3561233 A US 3561233A US 841853 A US841853 A US 841853A US 3561233D A US3561233D A US 3561233DA US 3561233 A US3561233 A US 3561233A
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United States
Prior art keywords
fall plate
rod
push
lever
machine
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Expired - Lifetime
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US841853A
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English (en)
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Karl Kohl
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Individual
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Individual
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    • 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

Definitions

  • This invention relates to Warp knitting machines, and particularly to a fall plate mechanism for such a knitting machine.
  • Fall plates are attached on the guide bar assembly for joint swinging motion with the guide bars, and are depressed by a fall plate mechanism at right angles to the common direction of guide bar elongation, the conventional mechanism mainly consisting of a cam shaft, usually the main cam shaft of the machine, a cam on the shaft, and a motion transmitting train of arms and levers which connects the fall plate assembly with a cam follower cooperating with the cam.
  • the conventional mechanism mainly consisting of a cam shaft, usually the main cam shaft of the machine, a cam on the shaft, and a motion transmitting train of arms and levers which connects the fall plate assembly with a cam follower cooperating with the cam.
  • the known fall plate mechanisms are relatively complex and costly, and it is difiicult, if at all possible, to vary the pattern of fall plate movement.
  • the primary object of the invention is the provision of a fall plate mechanism which is simpler than those in use heretofore, and which readily permits any desired control of the fall plate movements so that the fall plate may be employed for patterning purposes.
  • the invention mainly resides in the fall plate mechanism, and particularly in the motio transmitting train of a warp knitting machine which connects the machine drive with a fall plate assembly, the machine being conventionally equipped with a frame, guide bars elongated in a common direction and mounted on the frame for joint swinging motion in a plane transverse to that common direction, and a patterning mechanism for longitudinally moving each guide bar.
  • the fall plate assembly which includes the fall plate proper, is mounted on the frame for swinging motion with the guide bars and is moved by the fall plate mechanism in a direction transverse to the common direction of guide bar mechanism.
  • the motion transmitting train includes a plurality of links connected by pivots in sequence to form a chain whose first and last links are pivotally connected to the fall plate assembly and to the drive.
  • the group of pivotally connected elements constituted by the fall plate assembly, the chain of links, and the drive includes two elements of which one carries a pivot pin whereas the other one is formed with an elongated opening receiving the pin for rotation about its axis and for radial translatory movement.
  • the pivot pin is connected to the patterning mechanism for causing 3,561,233 Patented Feb. 9, 1971 BRIEF DESCRIPTION OF THE DRAWING In the drawing:
  • FIG. 1 shows a Raschel knitting machine equipped with a fall plate mechanism in fragmentary front elevation
  • FIGS. 2 and 3 show respective modification of a detail of the apparatus of FIG. 1 in corresponding views on a larger scale.
  • An upright push-rod 1 is connected with a cam follower traveling over a cam on the main cam shaft of the machine in the usual manner, not shown, so that the push rod reciprocates longitudinally, as indicated by the double arrow 2, when the machine operates.
  • a bellcrank lever 3 is rocked by the pushrod 1, as will presently be described in more detail, and is hingedly linked by a long connecting rod 4 to another bell-crank lever 5 on the guidebar assembly of which only a bracket 17 is seen in the drawing.
  • a hanger bar 6 pivotally mounted on the lever 5 and guided in the bracket 17 carries the fall plate 7. The fall plate moves up and down as indicated by the arrow 8, when the push rod 1 is driven.
  • the push-rod 1 is connected with the lever 3 by a pivot pin 9 on the push-rod which engages a slot 10 in one arm of the lever 3.
  • the slot 10 is elongated in a direction which is radial relative to the fulcrum axis of the lever and transverse to the direction of push-rod movement.
  • the slot 10 is wide enough to permit rotation of the pin 9 about its axis with the necessary small clearance, and permits translatory movement of the pin transverse to the direction of push-rod movement and radial relative to the pin axis.
  • the head of the push-rod 1 to which the pin 9 is secured is hingedly linked by a rod 11 to a lever 12, identical in structure and function with the non-illustrated shogging levers of the machine which longitudinally move the guide bars omitted from FIG. 1 for the sake of clarity.
  • the lever 12 is pivoted on the machine frame by a pattern chain 13 engaging a hardened steel roller 18 on the lever 12 and trained over a pattern drum 19 from which the shogging movements of the nonillustrated guide bars are also derived in a manner not illustrated and conventional in itself.
  • FIGS. 2 and 3 Modified details of the pivotal connection between the push-rod 1, the bellcrank lever 3, and the rod 11 of the patterning mechanism are shown in FIGS. 2 and 3.
  • the head of the push-rod 1 is linked by a pivot 9a to a slide 14 guided in the slot 10 for translatory movement radial to the axis of the pin 9a on which the rod 1 is pivotally secured.
  • Links of the pattern chain 13, not explicitly shown, cause the slide 14 to move between the two ends of the slot 10 whereby the push-rod 1 may move between the two positions thereof illustrated in fully drawn and in broken lines, respectively.
  • the arm of the lever 3 to which the push-rod 1 is secured has a circular opening in which a disc 15 is rotatably mounted.
  • the disc 15 is turned in the lever 3 by the rod 11 in response to engagement of a suitable link of the chain 13 with the roller 18 to shift the push-rod 1 toward and away from the lever fulcrum between the positions shown in fully drawn and in brokn lines.
  • the motion transmitting train in the fall plate mechanism of the invention thus permits the fall plate to be controlled by the pattern mechanism of the machine for activating the fall plate in each individual course of the fabric or leave it inactive to produce patterns not available with conventional fall plate mechanism which depress the fall plate in the knitting of each course or not at all.
  • the illustrated chain of hingedly connected links 3, 4 has been found most convenient for achieving the objects of this invention in a simple manner, but it will be appreciated that a different motion transmitting mechanism may be similarly controlled by shifting a pivot pin between two pivotally connected elements radially to its axis in response to operation of the patterning mechanism.
  • the latter may assume any conventional form other than that specifically illustrated, and the mechanism chosen for the purpose of the invention may be modified to shift a pivot pin remote from the push-rod 1 or its equivalent in the drive mechanism.
  • a warp knitting machine having a frame, guide bars elongated in a common direction and mounted on said frame for joint swinging motion in a plane transverse to said direction, a patterning mechanism for longitudinally moving each guide bar, a full plate assembly mounted for swing motion with said guide bars and including a fall plate member, and a fall plate mechanism for moving the fall plate member in a direction transverse to said common direction, the fall plate m anism including drive means on said frame, and motion transmitting means connecting said drive means to said fall plate assembly, the improvement in said motion transmitting means which comprises:
  • one of the pivots connecting two of said elements including a pivot pin having an axis and secured to one of said two elements, the other of said two elements being formed with an opening receiving said pivot pin for rotation about said axis and for radial translatory movement;
  • said one pivot including guide means guiding said radial movement transversely of the direction of movement of said one element when said drive means move said last link.
  • said patterning mechanism including a movable pattern chain and said connecting means including a rod member fastened to said pivot pin and a lever engaging said chain and operatively connected to said rod member.
  • said drive means including a push rod oscillating longitudinally r when said drive means operate, said last link being a lever having an arm and a fulcrum, said arm being formed with said opening.
  • said opening being elongated
  • said guide means including a slide member longitudinally movable in said opening, said pivot pin engaging said slide member, said rod member being secured to said slide member for moving the same longitudinally in said opening.
  • said guide means including a guide member angularly displaceable in said opening, said pivot pin engaging said guide member, said rod member being secured to said guide member for angularly displacing the same in said opening.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US841853A 1968-07-25 1969-07-15 Fall plate mechanism Expired - Lifetime US3561233A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1760964 1968-07-25

Publications (1)

Publication Number Publication Date
US3561233A true US3561233A (en) 1971-02-09

Family

ID=5696309

Family Applications (1)

Application Number Title Priority Date Filing Date
US841853A Expired - Lifetime US3561233A (en) 1968-07-25 1969-07-15 Fall plate mechanism

Country Status (4)

Country Link
US (1) US3561233A (enrdf_load_stackoverflow)
JP (1) JPS5030187B1 (enrdf_load_stackoverflow)
BR (1) BR6910981D0 (enrdf_load_stackoverflow)
GB (1) GB1238788A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4224809A (en) * 1978-07-13 1980-09-30 Karl Mayer Textilmaschinenfabrik Gmbh Warp knitting machines with slider needles and a fall plate
US5285685A (en) * 1992-05-11 1994-02-15 The United States Of America As Represented By The Secretary Of The Air Force Perceived attitude apparatus and method
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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4224809A (en) * 1978-07-13 1980-09-30 Karl Mayer Textilmaschinenfabrik Gmbh Warp knitting machines with slider needles and a fall plate
US5285685A (en) * 1992-05-11 1994-02-15 The United States Of America As Represented By The Secretary Of The Air Force Perceived attitude apparatus and method
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
BR6910981D0 (pt) 1973-01-09
GB1238788A (enrdf_load_stackoverflow) 1971-07-07
JPS5030187B1 (enrdf_load_stackoverflow) 1975-09-29

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