US1980209A - Operating mechanism for knitting machines - Google Patents

Operating mechanism for knitting machines Download PDF

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Publication number
US1980209A
US1980209A US639634A US63963432A US1980209A US 1980209 A US1980209 A US 1980209A US 639634 A US639634 A US 639634A US 63963432 A US63963432 A US 63963432A US 1980209 A US1980209 A US 1980209A
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US
United States
Prior art keywords
cam
series
follower
motion
lever
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
US639634A
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English (en)
Inventor
Kinsella Edward
Pratt John Gordon
Kelsall Bernard
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Celanese Corp
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Celanese Corp
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 Celanese Corp filed Critical Celanese Corp
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Publication of US1980209A publication Critical patent/US1980209A/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
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/10—Devices for supplying, feeding, or guiding threads to needles
    • D04B27/24—Thread guide bar assemblies
    • D04B27/26—Shogging devices therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18296—Cam and slide

Definitions

  • a knitting machine comprises a series of knitting elements, cam follower means in connection with said series, and a cam having two surfaces adapted to engage said cam follower means and to transmit motion positively in opposite directions respectively to the series of elements, said cam surfaces being simultaneously in engagement with said follower means,so as to effect the motion and reversal of motion of the knitting elements substantially without backlash.
  • An arrangement which has the advantage that there is no tendency or necessity for the follower roller to have to reverse its direction of movement during rotation of the cam consists in two follower rollers each engaging separate cam surfaces, so formed that contact is always maintained between each surface and its corresponding roller.
  • one or both rollers may be adjustably mounted. This adjustment may also be utilized to vary the field of traverse of the part operated without affecting the extent of the traverse. Thus, one roller can be withdrawn from its cam somewhat and the other pushed towards its cam, so as to alter the position of the camfollower lever relative to the .lever 16.
  • the cam followers may be tapered, the cam surfaces being appropriately formed to suit the tapered shape of the roller, and preferably to give a line contact with the roller.
  • the cam surfaces may either be formed in a member or members projecting from the periphery of a drum, or in a member or members extending endwise from the face of a rotatable plate.
  • Figure 1 shows a view of a cam and follower mechanism according to the invention
  • Figure 2 shows another view in part section of the mechanism shown in Figure 1;
  • FIG. 3 shows somewhat different form of the cam mechanism
  • Figure 4 is a detail of Figure 3.
  • Figure 5 shows one application of the cam mechanism illustrated in Figure 1 to a warpso knitting machine.
  • an annular cam 8 is mounted on one face of a plate 9 which is secured to a'cam shaft 10 by means of a set screw 11.
  • cam 8 are two cam rollers 14, 15 carried by a lever 16.
  • the cam plate 9 being secured to the shaft 10, the cam 8 is driven by the rotation of the shaft l0, and, being at a variable distance from the shaft (as may be seen from Figure 5) gives motion to the cam rollers 14, 15 and the
  • the butt end 1'7 of the lever is secured by lock nuts 18 and holds the cam rollers thereon.
  • the cam rollers 14, 15 are mounted on spindles retain the rollers and allow them to rotate freely.
  • the spindles 19 pass through blocks 21 and washers 22 which are clamped together by means of lock nuts 23 on the end of the spindles 19.
  • Each of the spindles 19 is secured in its block 21 by means of a pin 24 which prevents rotation of the spindle.
  • the block 21 and the washer 22 fit into a slot 25 between the main part of the lever 16 and the butt 1'7 and are adjusted by means of a screw 27 passing through the side of the butt 1'? and acting on the face of the block 21.
  • a screw 27 passing through the side of the butt 1'? and acting on the face of the block 21.
  • wear of the cam rollers 14, 15 or of the cam 8 can be readily taken up, and in addition angular adjustment of the position of Acting on the opposite sides 12, 13 of the mit of adjustment by means of the screws 27 and tightened after adjustment.
  • the cam rollers 14, 15 rotate on their spindles 19, which are lubricated by means of oil channels 30, 31, fed by means of oil pipes 32 carried by the lever 16.
  • a further cam 33 is shown on the side of the cam plate 9 opposite to the cam 8, the cam 33 operatingif desired a similar lever to the lever 16 illustrated.
  • Such an arrangement is particularly convenient in connection with the mechanism described in U. S. applications S. Nos. 639,633 and 639,638 both filed 0ct.'26, 1932. in which knitting parts, e. g. needles, sinkers or guides operated by a camlike the cam 8 on one side of the cam plate 9 and balanced by a balance weight similarly operated by means of a cam such as the cam 33 on the other side of the cam plate..
  • the two cams 8, 33 being secured to the common plate 9, one setting of the plate on the cam shaft suffices to have the two c'am systems fixed in correct timing relation.
  • FIGS 3 and 4 illustrate another form of cam mechanism according to the present invention, this mechanism being directly applicable to warpknitting machines for the purpose of lapping the thread guides across the needles in the manner described in U. S. application S. No. 639,631 filed Oct. 26, 1932.
  • a cam 36 mounted on a rotating shaft 37 engages with two cam rollers 38, 39 mounted on spindles 40.
  • a follower arm 43 On a pivot 42 is carried a follower arm 43 having an enlargement 44 at its free end, the spindle 40 of the cam roller 38 being fixed directly in the enlargement 44 while the spindle 40 of the cam roller 39 is carried in a block 46 sliding in a slot 45 in the enlargement 44 and capable of adjustment to take up wear by means of a screw 47 and lock nuts 48, 49.
  • Thread guides '60 are operated'from the lever 16 which is provided with an extension 61 having an adjustable pivot 62.
  • a rod 63 is secured atone end of the adjustable pivot 62 and at the other to a pivot 64 on the tail of an oscillating bracket 65 which carries, by means of flat springs 67, a guide bar 68 on which the guides 60 are mounted.
  • the lever 16 isprovided with cam roller mechanism 'as described with reference to Figure 1 which is acted upon by the cam 8 fixed onthe face of the cam plate 9 rotated on the shaft 10.
  • the guides 60 are shown in their relationship to the presser 71, the sinkers '12 and the needles 73,
  • the substantial form of the cam proper and the large operating surface enable the cam profile, to be accuratelyv formed so that the knitting elements can be brought to their correct positions at relatively low velocities thus reducing the accelerations and retardations of these parts and the magnitude of the operating forces. In this way the forces involved are kept torelatively low amount, with consequent reduction of wear and vibration.
  • a warp knitting machine comprising a series of knitting elements, cam follower means in connection with said series, a cam having two cam surfaces adapted toengage said cam follower means and to transmit motion positively in opposite directions respectively to the series of elements, said' cam surfaces being simultaneously in engagement with said follower means, so as to effect the motionand reversal of motion of the knitting elements substantially without backlash, and means for adjusting the position of said.- follower means with respect to said surfaces, so as to adjust the field of motion of said knitting elements, and to take up wear.
  • a warp knitting machine comprising a series of knitting elements, cam follower means in connection with said series, a cam having two cam surfaces adapted to engage said cam follower means and to transmit motion positively in opposite directions respectively to the series of elements, said cam surfaces being simultaneously 120 in engagement with said follower means, so as to effect the motion and reversal of motion of the knitting elements substantially without backlash, and means for adjusting the position of at least one of said follower means with respect to its cam 125.
  • a 'warp knitting machine comprising a series of knitting elements, cam follower means in connection with said series, a cam having two cam'surfaces adapted to make rolling line contact with said cam follower means and to transmit motion positively in opposite directions re-' spectively to the series of elements, said cam surfaces being simultaneously in engagement with said follower means, so as to effect the motion and reversal of motion of the knitting elements substantially without backlash, and means for adjusting the position of at least one of said follower means .with respect to its cam surface to ensure simultaneous contact of the cam followers and their respective camsurface.
  • a warp knitting machine comprising a series of knitting elements, coned cam follower means in connection with said series, and a cam having two cam surfaces adapted to make rolling line contact with said coned cam follower means and to transmit motion positively in opposite directionsrespectively to the series of elements, 0
  • gagement with said follower means, so as to effect the motion and reversal of motion of the knitting elements substantially without backlash, and means for adjusting the position of at least one of said follower means with respect to its cam sur-- face-to ensure simultaneous contact of the cam followers and their respective cam surface.
  • a warp knitting machine comprising a series of knitting elements, a cam follower lever in connection with said series, a cam follower mounted on said lever, an axis for said lever, a cam shaft substantially at right angles to the axis and the length of said lever, a cam mounted on said shaft, said cam having two cam surfaces adapted to engage said cam follower means and to transmit motion positively in opposite directions respectively to the series of elements, said cam surfaces being simultaneously in engagement with said follower means, so as to effect the motion and reversal of motion of the knitting elements substantially without backlash, means for adjusting the position of at least one of said follower means with respect to its cam surface to ensure simultaneous contact of the cam follower and their respective cam surface, and connecting means between said follower lever and the series of knitting elements, adapted to permit said elements to move in a direction other than that imposed by said cam and follower.
  • a warp knitting machine comprising a plurality of series of knitting elements, cam follower means in connection with each of said series, a cam shaft, a cam in connection with each series mounted on said shaft, said cam having two cam surfaces adapted to engage said cam follower means and to transmit motion positively in opposite directions respectively to the series of 81E! ments, said cam surfaces being simultaneously in engagement with said follower means, so as to' effect the motion and reversal of motion of the knitting elements substantially without backlash,

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US639634A 1931-11-03 1932-10-26 Operating mechanism for knitting machines Expired - Lifetime US1980209A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1980209X 1931-11-03

Publications (1)

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US1980209A true US1980209A (en) 1934-11-13

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Application Number Title Priority Date Filing Date
US639634A Expired - Lifetime US1980209A (en) 1931-11-03 1932-10-26 Operating mechanism for knitting machines

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US (1) US1980209A (enrdf_load_stackoverflow)
FR (1) FR744839A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2419222A (en) * 1947-04-22 Knitting machine
US2425744A (en) * 1944-12-29 1947-08-19 Lambach Fritz Cam and roller lubricating means for warp knitting machines
US2699052A (en) * 1953-01-21 1955-01-11 Liebrandt Karl Warp knitting machine
US4995246A (en) * 1988-12-01 1991-02-26 Karl Mayer Testilmaschinenfabrik Gmbh Warp knitting machine with at least one bar

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2419222A (en) * 1947-04-22 Knitting machine
US2425744A (en) * 1944-12-29 1947-08-19 Lambach Fritz Cam and roller lubricating means for warp knitting machines
US2699052A (en) * 1953-01-21 1955-01-11 Liebrandt Karl Warp knitting machine
US4995246A (en) * 1988-12-01 1991-02-26 Karl Mayer Testilmaschinenfabrik Gmbh Warp knitting machine with at least one bar

Also Published As

Publication number Publication date
FR744839A (enrdf_load_stackoverflow) 1933-04-27

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