US3783641A - Knitting machine - Google Patents

Knitting machine Download PDF

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Publication number
US3783641A
US3783641A US00213010A US3783641DA US3783641A US 3783641 A US3783641 A US 3783641A US 00213010 A US00213010 A US 00213010A US 3783641D A US3783641D A US 3783641DA US 3783641 A US3783641 A US 3783641A
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Prior art keywords
pattern
members
pattern reading
reading members
knitting machine
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Expired - Lifetime
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US00213010A
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English (en)
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H Kitazawa
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Brother Industries Ltd
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Brother Industries Ltd
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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
    • D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
    • D04B15/68—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used
    • D04B15/72—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used in straight-bar knitting machines

Definitions

  • Kitazawa [75] Inventor: Hiroshi Kitazawa, Nagoya, Japan [73] Assignee: Brother Kogyo Kabushiki Kaisha,
  • the thus memorized pattern is conveyed to needle-selecting members including pattern plates which have projections formed at constant spacings thereon.
  • Some of the pattern plates associated with those of the patternreading members which correspond to the perforations in each row are operated to select needles that are required for the knitting operation in accordance with the pattern, the selected needlesbeing urged to their operative positions by the projections on the pattern plates.
  • Knitting machines of the above stated type are known. However, in these machines the devices for the selective use of the knitting needles are complicated and sometimes produce an incorrectly produced pattern of the knitted fabric.
  • a further object of the invention is to provide a knitting machine wherein a preselected part of the pattern on a pattern-retaining member can be read repeatedly through a simple procedure.
  • a stillfurther object of the invention is to provide a knitting machine wherein means for reading a pattern is readily returned to an initial position by simple and inexpensive means after travelling to a preselected final row of the perforations to beread.
  • the present invention provides, in a knitting machine having a plurality of knitting needles and a plurality of needle-selecting members for selective use of the knitting needles according to a pattern supplied, the combination of asupporting means, a pattern-retaining member on the supporting means having a plurality of rows of elements forming a pattern, a plurality of pattern-reading members adapted to read the successive rows of the elements on the pattern-retaining member, the patternreading members being mounted in the supporting means for reciprocation between a first and a preselected last row of the elements, means for transmitting the pattern read by the pattern-reading members to the needle-selecting members, means for feeding the pattern-reading members through the successive rows of the elements from the first to the preselected last row, means for locking the pattern-reading members at each ofthe successive rows of the elements, and stop means movable on the supporting means to stop the patternselecting members at the preselected last row of the elements.
  • FIG. 1 is a top plan view of a knitting machine embodying the novel concepts of the present invention
  • FIG. 2 is a vertical transverse section of the knitting
  • FIG. 3 is a view as seen in the direction of arrowlll in FIG. 2, in which some parts are shown broken away to illustrate other parts in detail;
  • FIG. 4 is a view as seen in the direction of arrowIV in FIG. 2, in which some parts are shown broken away to illustrate other parts in detail;
  • FIG. 5 is a fragmentary view similar to FIG. 4, showing a different condition
  • FIG. 6 is a section taken on theline VI-VI in FIG. 5;
  • FIG. 7 is a longitudinal section showing means for transmitting a pattern as memorized by pattern-reading members to needle-selecting members;
  • FIG. 8 is a fragmentaryhorizontal section showing means for operating the needle-selecting members
  • FIG. 9 is a fragmentary vertical section showing one of the needle-selecting members with associated parts; and I FIG. 10 is a vertical transverse section of the knitting machine showing the relationship between first and second cranks.
  • the knitting machine has an elongated needle bed 1 on which a number of knitting needles 2 are mounted so as to be movable in a transverse or lateral direction.
  • a cover 3 is provided to shield the back and bottom sides of the needle bed.
  • a support member 4 of substantially channelor U-shaped transverse section is fixedly mounted within the needle bed.
  • a flat surface 6 is formed on the support member 4 in order to support a card or pattern-retaining member 5'which will hereinafter be described in detail.
  • a number of transversely extending parallel rows of circular perforations 7 are formed through the flat surface 6 at predetermined spacings in a longitudinal direction.
  • a rectangular opening 8 for a locking purpose, as to be described later, is formed ahead of each row of the circular perforations 7.
  • the aforementioned card 5 is in the form of a thin sheet and, as shown in FIGS. 3 and 4, is provided with a number of rows of pattern 10 serving for selectively dividing a number of pattern plates or needle-selecting members 9 into two groups, as hereinafter described in greater detail.
  • Each of the pattern rows 10 is aligned with each row of the circular perforations 7 in the support member 4, and comprises a perforation or perforations 11A and an unperforated portion or portions 1 1B which are respectively in alignment with the circular perforations 7.
  • a movable frame 13 in the form of a box is slidably supported by a guide rod 14 secured to the support walls 12 and by a guide slot 15 (FIG. 2) formed in the support memher 4, the frame 13 being thus permitted'to reciprocate between a first left-hand position, as in FIG. 3, and a second right-hand position relative to the card 5.
  • a coil spring 16 is secured at one end to the frame 13 and at the other end to the support member 4 whereby the frame 13 is normally kept in its left-hand first position.
  • an engaging member 17, a locking member 18, and a lock-retaining member 19 are supported within the frame 13 so as to be separately vertically movable while being resiliently urged upward by spring members 20, 21 and 22, respectively.
  • the engaging member 17 is provided with a click 25 for engagement with teeth 24 on a longitudinally extending elongated feed plate 23 which is longitudinally movable along the support member 4 (refer also to FIG. 2), and is provided with a first pressure-bearing element 26.
  • the locking member 18 is provided with a projection 27 having an inclined end to be thrust into one of the aforesaid rectangular openings 8, and with a second pressure-bearing element 28 at the same height as the first element 26.
  • the lock-retaining member 19 is provided with a projection 30 for engagement with the right-hand edge, as seen in FIG. 4, of an opening 29 formed in the movable frame 13, and with a third pressure-bearing element 31 formed at the same height as the first and the second elements 26 and 28.
  • the left-hand end 32, as viewed in FIG. 3, of the feed plate 23 is rearwardly bent at a right angle, whereas a pin 33 is secured at the right-hand end of the feed plate.
  • a helical compression spring 34 is disposed between the bent end 32 of the feed plate 23 and the support wall 12 positioned adjacently, so that the feed plate is urged leftward as viewed in the same figure.
  • a lever 35 (FIGS. 3 and 4) which is adapted to move the feed plate 23 rightward against the spring 34, is fixedly mounted on the upper end of a shaft 36 rotatably supported by suitable means and securely provided with a cam 37 in the mid-part thereof, the cam 37 being adapted for the desired rightward travel of the feed plate 23.
  • These lever 35 and cam 37 are kept in their neutral positions by a spring 38. As shown in FIG. 1, this lever 35 is positioned approximately in the middle of the needle bed 1 and is turned upon contact with an actuating member C on a carriage K slidable on the bed.
  • a releasing plate 39 extends longitudinally of the support 4 and is formed with a pair of guide slots 41 respectively receiving pins fixedly planted in the support member 4 and with an inclined edge 42 engaging the aforesaid pin 33 on the feed plate 23, the releasing plate 39 being adapted to release the locking member 18 when required.
  • the releasing member 39 is movable obliquely and, when carried to its lowermost position, lowers the three pressure-bearing elements 26, 28 and 31 against the force of the springs 20, 21 and 22, which condition is illustrated in FIG. 5.
  • An extension spring 43 shown in FIGS. 3, 4 and 5 extends between the releasing member 39 and the pin 33 on the feed plate 23.
  • a lever 44 is provided which is swingable on the support member 4 and which is formed with a surface 45 for contact with the upper edge of the releasing member 39. Further below surface 45, the lever 44 is provided with an extension 46.
  • a spring 47 imparts a clockwise turning force, as viewed in FIGS. 4 and 5, to the lever 44 thereby to keep its surface 45 in contact with the upper edge of the releasing member 39.
  • a stop member 48 (FIGS. 3 and 4) is adapted to abut and stop the movable frame 13 at a selected one of the patternrows 10 between the aforementioned first and second terminal positions of its reciprocation, andis slidable along an elongated slot 49 formed in the support member 4.
  • the stop member includes a resilient projecting portion 51 having a peg 51a to be resiliently received in a number of apertures 50 formed in the support member 4 which is at the same spacings as the rectangular openings 8. By the engagement of one of the apertures 50 by the peg 51a, the stop member 48 can be retained at a position corresponding to the selected one of the pattern rows 10.
  • the stop member 48 is further provided with an abutment 52 (FIG. 3) for contact with the upper right-hand edge of the lockretaining member 19, and a portion 53 to move the stop member along the elongated slot 49 against the resiliency of the projecting portion 51.
  • pattern-reading members 54 are movable up and down within the frame 13 and also horizontally therewith between the first and the second positions.
  • the number of these pattern-reading members in a row is equal to the number of pattern forming elements in each row, that is, the number of perforations 11A and unperforated portions 11B that are present in each row.
  • control plates55 equal in number to the pattern-reading members 54 movably support the latter.
  • FIG. 7 best illustrates the manner of motion allowed to each control plate 55, which is defined by cam slots 57 receiving pins 56 secured to the support member 4.
  • a tension spring 58 between the support member 4 and each of the control plates 55 restricts the motion of the latter.
  • Each control plate is further formed with an aperture 61 at its right-hand end as viewed in FIG. 7, the aperture including a first edge 59 and a second edge 60 for a purpose hereinafter referred to.
  • An operating member 62 longitudinally movably supported by the support member 4, extends through the apertures 61 of all the control plates 55 and has one end disposed on the left side, as viewed in FIGS. 4 and 5, of the extension 46 of the lever 44.
  • An elongated member 63 longitudinally movably supported by the support walls 12 is fixedly provided with a connection member 64 on one end thereof that is connected to the operating member 62, and provided with a pin 65 in the mid-part thereof, as shown in FIG. 7.
  • a spring 66 extends between the member 63 and one of the support walls 12 to pull the former leftward as viewed in FIG. 7 and hence to urge all the control plates 55 in the lower, left-hand positions illustrated in the same figure.
  • First cranks 67 that are equal in number to the control plates 55 include upper legs 68 rotatably supported by the support member 4 and lower legs 69 swingable about the upper legs 68 (refer also to FIG. 10).
  • the lower legs 69 loosely pass through slots 70 formed in the respective control plates 55 as in FIG. 7. It is to be noted that each control plate 55 has its slot 70 of different length.
  • Each first crank 67 is operated or turned by each control plate 55 associated therewith, when its lower leg 69 is engaged by the left-hand edge 71, as viewed in FIG. 7, of the slot 70.
  • a pattern plate holder 72 (FIG. 2) which supports the aforesaid pattern plates or needle-selecting members 9 equal in number to the number of control plates 55, is transversely movable on a bottom 73 of the neethem forward, and with recesses 77 which do not contact the knitting needles, the projections 76 and the recesses 77 being formed alternately at predetermined spacings. More specifically, the projections 76 on each of the patternplates 9 are arranged at spacings which are equal to the spacings between extreme ends of successive knitting needles 2 that are greater in number by one than the control plates 55 and are further arranged correspondingly to the respective knitting needles 2.
  • each pattern plate 9 is movable between an operative position, where its projections 76 are contactable with the knitting needles, and an inoperative position, where the projections are kept out of contact with the needles.
  • second cranks 80 which are equal in number to the pattern plates 9, each include an upper leg 82 swingable about a lower leg 81.
  • the upper legs 82 are each received in an opening 83 formed in each pattern plate 9, while contacting the right-hand edges, as viewed in FIG. 9, of the lower legs 69 of the respective first cranks 67.
  • These second cranks 80 resiliently urge the respective pattern plates 9'to the aforesaid inoperative position, and keep the first cranks 67 in the position illustrated in FIGS. 7 and
  • a driving rod 84 shown in FIG. 8 is adapted to move the holder 72 forward inthe transverse direction through a plurality of linkages 85 and '86. This rod 84 is normally urged rightward, as viewed in FIG.
  • a substantially T- shaped lever 88 is swingable on a pin 89 fixedly mounted in the bottom 73 of the needle bed.
  • Three pins 90, 91 and 92 are secured at the ends of the three arms of the lever 88, the pin 90 being adapted to actuate the driving rod 84.
  • a spring 93 imparts a counterclockwise turning force, as viewed in FIG. 8,to the lever 88.
  • a shaft 94 is pivotally mounted in the back part of the cover 3, and is equipped with a lever 95 (refer also to FIG. 1) adapted to turn the T-shaped lever 88 and with an eccentrically positioned pin 96 for contact with the pin 91 on one end of the lever 88.
  • a lever 97 which is turnable about a suitably fixed pin 97a is formed with a cam face 98 for contact with the pin 92 on the lever 88 and with a slot 99 to receive the pin 65 on the elongated member 63 (FIGS. 4, 5, 6 and 7).
  • pins 101 on the flat surface 6 of the support member 4 are fitted in holes 100 in the card in order to retain the same in position.
  • a cover 102, adapted to hold the card upon the flat surface 6, is formed with a number of perforations 103 in alignment with the circular perforations 7 that are formed through the flat surface.
  • the selection of knitting needles for use is first made, and then the carriage'K is manually moved to and fro to start making a knitted fabric in accordance with a preselected pattern. It is assumed that the movable frame 13 is first located at its first or left-hand end position shown in FIG. 4. As seen in the same fig ure, the frame 13 in this instance is in contact with one of the support walls 12, while the projection 27 of the locking member 18 has its inclined end engaged in one of the rectangular openings 8 positioned at the extreme left in the figure. The pattern reading members 54 are then aligned with the left-hand end row of the pattern in the card 5.
  • the first cranks 67 corresponding to these control plates 55 are then swung rightward by the left-hand edges 71 of the slots formed also in the control plates, so that the second cranks and the pattern plates 9 correspondingv to these first cranks 67 are moved rightward as viewed in FIG. 9.
  • These pattern plates 9 are now in their operative positions, while the other pattern plates corresponding to those of the pattern-reading members 54 which have been prevented from fully moving upwards by the unperforated portions 113 of the card 5 are kept in their inoperative positions.
  • a desired fabric is formed in accordance with the selected pattern by manually moving the carriage K (FIG. 1).
  • the cam 37 moves the elongated feed plate 23 in the right-hand direction, so that its teeth 24 carries the click 25 of the engaging member 17 in the same direction (see FIG. 4).
  • the frame 13 is moved for a distance equal to the spacing between two adjoining ones of the rows of pattern.
  • the inclined end 27 of the locking member 18 is now received in the next rectangular opening 8, while the pattern reading members 54 are aligned with the next pattern row.
  • the carriage K is manually moved to start knitting in accordance with the pattern, and its actuating member C moves the feed plate 23 in the right-hand direction, as viewed in FIG. 3 and 4. Then, the frame 13 can be returned to the illustrated first position by the tensile force of the coil spring 16.
  • the lock-retaining member 19 which is movable with the frame 13 first contacts the abutment 52 on the stop member 48 (FIGS. 3 and 5) so that the projection 30 of the lock-retaining member is released from the opening 29.
  • the tension spring 43 pulls the releasing member 39 to its lower, right-hand position as viewed in FIGS. 4 and and 5.
  • the first, second and third pressure-bearing elements 26, 28 and 29 are also lowered by the releasing member 39, so that the click of the engaging member 17 is released from the teeth 24 of the feed plate 23, while the inclined end 27 of the locking member 18 moves out of the opening 8.
  • the frame 13 is rapidly returned to its initial position by the coil spring 16 as previously mentioned.
  • the operating member 62 turns the lever 44 counterclockwise from its position of FIG. 5 to that of FIG. 4 against the force of the spring 47.
  • the releasing member 39 and the feed plate 23 are then returned to their left-hand positions by the compression spring 34 (refer to FIG. 4), while the first, second and third pressure-bearing elements 26, 28 and 31 are elevated by the springs 20, 21 and 22, respectively.
  • the clock 25 of the engaging member 17 engages the teeth 24 on the feed plate 23.
  • the inclined end 27 of the locking member 18 is received in the lefthand end opening 8, and the projection 30 of the lockretaining member 19 is retained by one edge of the opening 29 formed in the frame 13.
  • the pattern as defined by the perforations in the card 5 can be repetitively read or memorized by the pattern-reading members 54 simply by the alternate operation of the carriage k and the lever 95, and the pattern can be repetitively developed in knitted fabric.
  • the aforesaid second position of the frame 13 can be set to any row 10 of pattern by moving the stop member 48, thus engaging its resilient projection 51 with a corresponding one of the apertures 50. In this manner, the rows of patterns between the first position and the thus-modified second position of the frame 13 can be repetitively memorized by the pattern-reading members 54 therewithin.
  • said pattern reading members being mounted in said supporting means and adapted to move reciprocally between two spaced positions across the rows of said patterns
  • said means for predetermining a final position of said pattern reading members includes resiliently yieldable engaging means and said supporting means includes successively formed apertures which said engaging means engages.
  • the knitting machine as claimed in claim 1, further including means for releasing said locking means, and means for returning said pattern reading members toward said one position whereby the pattern reading members are allowed to return to said oneposition from said predetermined final position when said releasing means is operated.
  • said returning means is a tension coil spring connecting said supporting means and said pattern reading members to resiliently urge the pattern reading members toward said one position.
  • said releasing means includes an abutment formed on said means for predetermining a final position of said pattern reading members, and means actedupon by said abutment at the final position of the pattern reading members to release said locking means.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US00213010A 1970-12-29 1971-12-28 Knitting machine Expired - Lifetime US3783641A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12456770A JPS569986B1 (pt) 1970-12-29 1970-12-29

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US3783641A true US3783641A (en) 1974-01-08

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US00213010A Expired - Lifetime US3783641A (en) 1970-12-29 1971-12-28 Knitting machine

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US (1) US3783641A (pt)
JP (1) JPS569986B1 (pt)
AU (1) AU463731B2 (pt)
BR (1) BR7108630D0 (pt)
ES (1) ES398788A1 (pt)
GB (1) GB1366939A (pt)
IL (1) IL38474A (pt)
ZA (1) ZA718599B (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995452A (en) * 1974-05-24 1976-12-07 Aisin Seiki Kabushiki Kaisha Hand knitting machine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB303801A (en) * 1928-01-09 1930-03-13 Tricotil Sa Improvements in or relating to jacquard mechanism for parallel knitting-machines
US3103110A (en) * 1958-04-16 1963-09-10 Superba S A R L Ets Two-bed hand-knitting apparatus
US3120114A (en) * 1961-04-19 1964-02-04 Nihon Misin Seizo Kabushiki Ka Hand-operated knitting machine
US3225568A (en) * 1961-04-13 1965-12-28 Art Amiki Kabushiki Kaisha Hand-knitting machine
US3250093A (en) * 1963-04-16 1966-05-10 Aoyama Kenkyujo Hand knitting machine
US3358473A (en) * 1964-11-05 1967-12-19 Aisin Seiki Needle selector for a hand knitting machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB303801A (en) * 1928-01-09 1930-03-13 Tricotil Sa Improvements in or relating to jacquard mechanism for parallel knitting-machines
US3103110A (en) * 1958-04-16 1963-09-10 Superba S A R L Ets Two-bed hand-knitting apparatus
US3225568A (en) * 1961-04-13 1965-12-28 Art Amiki Kabushiki Kaisha Hand-knitting machine
US3120114A (en) * 1961-04-19 1964-02-04 Nihon Misin Seizo Kabushiki Ka Hand-operated knitting machine
US3250093A (en) * 1963-04-16 1966-05-10 Aoyama Kenkyujo Hand knitting machine
US3358473A (en) * 1964-11-05 1967-12-19 Aisin Seiki Needle selector for a hand knitting machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
1,935,533, 1 1971 German Application (MADAG) 66 75 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995452A (en) * 1974-05-24 1976-12-07 Aisin Seiki Kabushiki Kaisha Hand knitting machine

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Publication number Publication date
AU463731B2 (en) 1975-08-07
AU3725071A (en) 1973-06-28
IL38474A (en) 1974-07-31
GB1366939A (en) 1974-09-18
ES398788A1 (es) 1975-05-16
IL38474A0 (en) 1972-02-29
BR7108630D0 (pt) 1973-05-24
JPS569986B1 (pt) 1981-03-05
ZA718599B (en) 1972-09-27

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