US3823578A - Drive means for double cylinder circular knitting machine - Google Patents

Drive means for double cylinder circular knitting machine Download PDF

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Publication number
US3823578A
US3823578A US00264463A US26446372A US3823578A US 3823578 A US3823578 A US 3823578A US 00264463 A US00264463 A US 00264463A US 26446372 A US26446372 A US 26446372A US 3823578 A US3823578 A US 3823578A
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United States
Prior art keywords
movable element
slot
cylinder
gear
shaft
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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
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US00264463A
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English (en)
Inventor
G Voda
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.)
Elitex Zavody Textilniho
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Elitex Zavody Textilniho
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Publication of US3823578A publication Critical patent/US3823578A/en
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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
    • D04B15/94—Driving-gear not otherwise provided for
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/10—Circular knitting machines with independently-movable needles with two needle cylinders for purl work or for Links-Links loop formation

Definitions

  • the present invention relates to a double cylinder circular knitting machine and particularly to such a machine for knitting hosiery.
  • the two cylinder circular knitting machines hitherto known are provided with axially aligned lower and upper needle cylinders which are so arranged that they do not permit the mutual angular displacement or stoppage of one cylinder relative to the other during knitting. For that reason, the method of twisting the knitwork cannot be used to close the hose.
  • a knitting machine having a pair of rotatable needle cylinders aligned along a common axis. Means are provided for rotating one of the cylinders and transmitting the rotation to the other. The transmission means being disconnectable so selectively interrupt the rotation of the second cylinder while the first cylinder continues to rotate.
  • the transmission is provided with clutch means which engage the gear fixed to the second cylinder.
  • the clutch means being operable to be disconnected so that the second cylinder is not driven.
  • Simultaneously means are provided to brake the rotation of the second cylinder so that only one of the cylinders rotates.
  • the advantage of the present arrangement lies in the fact that rotation of one cylinder may be selectively interrupted without modifying or changing its axis of rotation and without modifying or changing the normal drive means or the operation of the other cylinder.
  • FIG. 1 is schematic view of the drive of a double cylinder knitting machine
  • FIG. 2 is enlarged sectional view of the transmission according to the present invention.
  • FIG. 3 is sectional view along line 3 3 of FIG. 2 showing the engagement of the clutch means
  • FIG. 4 is view similar to FIG. 3 showing disengagement of the clutch means.
  • FIG. 1 The conventional arrangement for driving a double cylinder knitting machine is schematically shown in FIG. 1.
  • the upper needle cylinder 1 and the lower needle cylinder are commonly driven by a shaft 3 connected to the main drive, drive cam, motor or other drive means as is well known.
  • a bevel gear 4 is connected on the end of the shaft 3 and meshes with a mating bevel gear 5 secured coaxially about the lower nee dle cylinder 2.
  • a spur gear 6 secured to the lower needle cylinder 2 above the bevel gear 5 meshes with a similar gear 7 secured to the end of a vertical shaft 8 arranged parallel to the axis of the needle cylinder.
  • the upper end of the shaft 8 is provided with another spur gear 15 meshing with a similar gear 37 secured to the upper cylinder 1.
  • rotation of the shaft 3 is transmitted simultaneously to both cylinder 1 and 2.
  • FIGS. 2 4 the upper end of the vertical shaft 8 is provided by means of a key 9 or wedge type securement with a cup shaped member 10 having an upwardly directed circular flange.
  • the member 10 is adapted to thus rotate conjointly with the shaft.
  • a slot 11 or narrow groove of defined arc is formed in the circular flange of the memberllf) into which a tongue 12 is adapted to fit.
  • the tongue 12 is a part of fork shaped member 13 which sits in thebowl portion of the cup 10 straddling the shaft 8 as seen in FIG. 3, and is enabled to reciprocate radially as well as rotationally about the shaft 8.
  • the gear 15 Lying above the forked member 13 is the gear 15 which in this case is slightly enlarged axially and is freely rotatable about the shaft 8.
  • the gear 15 is provided with a pair of depending side walls 14 which straddle the arms of the forked member 13 and a transverse depending wall 16 which lies opposed to the ends of the arms of the forked member.
  • Each of the arms of the forked member has a bore into which a spring 17 is set bearing against the depending wall 16. The member 13 is thus normally biased radially outward of the cup 10 although shiftable within the walls 14.
  • Each of the depending walls 14 is provided with a transverse bore 18, while each of the outer edges of the arms of the forked member 13 sliding against the walls 14 is provided with a conical recess or notch 19.
  • a ball is located in one of the bores 18 and is adapted to enter into the recess 19 in the event the forked member 13 is shifted so that its tongue element 12 is in the slot l1.
  • Mounted on a pivot 21 secured within the wall 14 is a swingable brake segment 22 having an arcuate exterior surface.
  • a set screw 23 is mounted within the swingable segment 22 so as to engage with the ball 20.
  • the movement of the segment 22 is defined and controlled by an annular or ring-like shield 24 secured to a machine frame member 25 or other fixed member by a screw 26, to act as a brake on the system.
  • a lid 27 caps the shaft 8 holding the parts in axial alignment. The lid 27 is secured by screws 28 to the frame member 25.
  • a vertical pin 29 is secured at the tongue 12 and roller 30 arranged on it.
  • the tongue is provided with a point or tip 31 which lies above the upper surface of a control finger 32.
  • the roller 30 rides in cam like fashion against the edge sur face of a control finger 32.
  • the control finger 32 is slidably mounted on a vertical rod 33 and is moved by an elevator rod 34 passing through its rear end.
  • the elevator rod is provided with an upper abutment clamp 34a and a lower abutment clamp 34b to either side of the finger 32 which pushes it up or down as is obvious.
  • Springs 35 and 36 spring load the elevator rod 34,
  • the braking segment 22 is biased by a spring 38 seated in the wall 14.
  • the gear 15 meshes with the gear 37 secured to upper needle cylinder 1.
  • the braking segment 22 which is affixed to the depending wall 14 of the gear 15 is biased away from contact with the fixed ring 24 and therefore the gear 15 rotates freely and conjointly with the shaft 8.
  • Spring 17 maintains the forked member 13 biased within the slot 11 so that it will also securely rotate therein.
  • the action of the present device is as follows:
  • the rotational torque continues to be transmitted from shaft 3 via shaft 8 to flange 10.
  • the elevator rod 34 is lifted causing the control finger 32 to also rise.
  • the pointer 31 of element 13 is simultaneously pressed by control finger 32 inwardly as shown in FIG. 4 and bevel 12 of element 13 comes out of engagement with groove 11 of flange 10.
  • the transmission of the rotational torque is thus interrupted.
  • flange 10 rotates freely; the inner roller 30 rolling against the inner surface of the flange.
  • the ball is also pressed out of the conical recess 19 and pressed by edge of element 13 against screw 23.
  • the action of ball 20 causes outward movement of the braking segment 22 which contacts, or begins to cooperate, with ring 24 to brake the movement of gear 15 and thus the rotation of the upper needle cylinder 1.
  • control finger 32 is lowered by spring 36, and the lifting rod 34 is released from contact with its control means.
  • the springs 17 press element 13 back and the tongue 12 again falls into the slot 11 as shown in H0. 3.
  • Ball 20 returns into the conical recess l9 and braking segment 22 under urging of the spring 38 moves out of contact with ring 24.
  • the spring 35 is provided, which normally biases the rod 34 downwardly. It will of course be obvious that the stoppage of the upper needle cylinder will be accomplished in synchronism with the needle operation and with the entire operation of the machine. It will be obvious to those skilled in this art that the remaining structure and function of the knitting machine will not vary or change. The absence of detail disclosure of the several parts of the machine is made therefore, for sake of brevity.
  • a simple clutch transmission between the two cylinders is provided whereby on command from the control drum, or from some other automatic or manually operated device, the upper cylinder drive may be interrupted, or stopped. Stoppage may be for as long as selected or desired; meanwhile the lower cylinder continues its normal rotation. In this manner, the twisting off of hosiery on a double needle cylinder machine can be effected. It will be obvious that other patterning forms may be also obtained.
  • said second gear includes a depending wall cooperating to engage with said movable element, a pivotal braking member mounted on said wall, a fixed ring surrounding said wall, said pivotal braking member being adapted to move into contact with said ring on movement of said movable element out of engagement with said slot.
  • said means for securing said braking member and said movable element comprises a screw mounted in said braking element, a ball arranged within a bore in said wall, a conical groove formed in said movable element, and spring means for normally biasing said braking element to force said ball within said groove, said screw, ball and groove being arranged so that said ball is received within said groove when said movable element is seated within said slot.
  • said movable element comprises a forked shaped body having a pair of arms straddling said shaft and a projection extending therefrom and adapted to be seated within said slot.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Sewing Machines And Sewing (AREA)
US00264463A 1971-06-21 1972-06-20 Drive means for double cylinder circular knitting machine Expired - Lifetime US3823578A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS4574A CS162893B1 (de) 1971-06-21 1971-06-21

Publications (1)

Publication Number Publication Date
US3823578A true US3823578A (en) 1974-07-16

Family

ID=5388812

Family Applications (1)

Application Number Title Priority Date Filing Date
US00264463A Expired - Lifetime US3823578A (en) 1971-06-21 1972-06-20 Drive means for double cylinder circular knitting machine

Country Status (6)

Country Link
US (1) US3823578A (de)
CS (1) CS162893B1 (de)
DE (1) DE2227015A1 (de)
FR (1) FR2143218B1 (de)
IT (1) IT956485B (de)
SU (1) SU466671A3 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4047401A (en) * 1972-03-16 1977-09-13 Gottlieb Eppinger Method for forming a closed toe
US4233826A (en) * 1977-10-21 1980-11-18 Construzioni Meccaniche Lonati S.P.A. Control device for striper units in circular knitting machines
AT412655B (de) * 2002-01-09 2005-05-25 Chen Tung Ko Transmissionseinrichtung für rundstrick- oder -wirkmaschinen

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB333456A (de) *
US1210866A (en) * 1913-10-07 1917-01-02 William Spiers Circular-knitting machine.
US2228688A (en) * 1937-09-27 1941-01-14 Charnwood Engineering Company Circular knitting machine
US2258927A (en) * 1936-11-23 1941-10-14 Clarke Albert Victor Knitting machine
US2606432A (en) * 1948-11-17 1952-08-12 Moncenisio Off Circular knitting machine
US2722116A (en) * 1953-01-07 1955-11-01 Bhs Bayerische Berg Drive apparatus for circular knitting machines and the like
US3021699A (en) * 1962-02-20 Clutch operating means for knitting machines
US3272294A (en) * 1963-09-04 1966-09-13 Bentley Eng Co Ltd Driving mechanism of knitting machines

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB333456A (de) *
US3021699A (en) * 1962-02-20 Clutch operating means for knitting machines
US1210866A (en) * 1913-10-07 1917-01-02 William Spiers Circular-knitting machine.
US2258927A (en) * 1936-11-23 1941-10-14 Clarke Albert Victor Knitting machine
US2228688A (en) * 1937-09-27 1941-01-14 Charnwood Engineering Company Circular knitting machine
US2606432A (en) * 1948-11-17 1952-08-12 Moncenisio Off Circular knitting machine
US2722116A (en) * 1953-01-07 1955-11-01 Bhs Bayerische Berg Drive apparatus for circular knitting machines and the like
US3272294A (en) * 1963-09-04 1966-09-13 Bentley Eng Co Ltd Driving mechanism of knitting machines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4047401A (en) * 1972-03-16 1977-09-13 Gottlieb Eppinger Method for forming a closed toe
US4233826A (en) * 1977-10-21 1980-11-18 Construzioni Meccaniche Lonati S.P.A. Control device for striper units in circular knitting machines
AT412655B (de) * 2002-01-09 2005-05-25 Chen Tung Ko Transmissionseinrichtung für rundstrick- oder -wirkmaschinen

Also Published As

Publication number Publication date
CS162893B1 (de) 1975-07-15
IT956485B (it) 1973-10-10
FR2143218B1 (de) 1973-07-13
FR2143218A1 (de) 1973-02-02
SU466671A3 (ru) 1975-04-05
DE2227015A1 (de) 1972-12-28

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