US3540236A - Design wheel assembly for circular knitting machine - Google Patents

Design wheel assembly for circular knitting machine Download PDF

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Publication number
US3540236A
US3540236A US721842A US3540236DA US3540236A US 3540236 A US3540236 A US 3540236A US 721842 A US721842 A US 721842A US 3540236D A US3540236D A US 3540236DA US 3540236 A US3540236 A US 3540236A
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United States
Prior art keywords
drivers
shaft
design
design wheel
selectors
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Expired - Lifetime
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US721842A
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English (en)
Inventor
Pierre Joseph
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.)
Edouard Dubied et Cie SA
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Edouard Dubied et Cie SA
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Publication date
Application filed by Edouard Dubied et Cie SA filed Critical Edouard Dubied et Cie SA
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Publication of US3540236A publication Critical patent/US3540236A/en
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Expired - Lifetime legal-status Critical Current

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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
    • D04B15/76—Pattern wheels

Definitions

  • the invention is concerned with a design wheel assembly for a circular knitting machine.
  • the assembly cooperates with a common endless sorting tape for sorting according to a design, and the assembly has selectors housed in the wheel, which, after sorting, are automatically moved from their inoperative position to their work position for actuating knitting tools (needle and key combinations) to be selected, and which are then either locked in this position for repeating at any frequency the stored design, or again moved to their starting position by driving means.
  • the driving means are movable along a central axis, and each carries a finger which is used to move its corresponding driving means.
  • the driving means are guided against radial movement, and slide between the central axis and the hollow part of a bell, which is fixed on the design wheel; and they are guided against circumferential movement by slides parallel to the axis.
  • the selectors are bent, the inner edge of the bend is a ramp of about When they go down to their starting position, the drivers by pressing on this ramp, push the selectors toward the outside in a position where they are ready for a new sorting. Because of this bend, the diameter formed by the selectors at the place of contact with the sorting tape is still greater (FIG. 1 of the cited patent), the volume of the design wheel is thus large.
  • the purpose of the present invention is to provide a design wheel having a reduced volume, that is to say having a reduced diameter, in order to be able to lodge more wheels around the cylinder so as to increase the production of the knitting machine.
  • Another object of theinvention is to replace the grooves by other guiding surfaces less likely to wear.
  • the design wheel according to the invention is charac terized by the fact that the drivers are guided, on the one hand between the central shaft and the hollow of a bell, the latter being fast on the wheel, and on the other hand by slides parallel to the shaft.
  • FIG. 1 shows lengthwise a vertical cross section of a design wheel.
  • FIG. 2 shows partially in cross section guiding of the drivers.
  • FIG. 3 shows a cross section along IIIIII of FIG. 2.
  • FIG. 4 shows a modification of the guiding.
  • FIG. 5 shows a second modification of the guiding.
  • Cylinder 1 a needle 2, as well as the cam holder 3 are only shown partially in the cross section of FIG. 1, each key 4 is attached to a needle and can oscillate around its securing point. It can be located selectively in a position advanced toward the cam holder, in such a way that it is driven in an ascending movement through its heel 5 which bears on ascending cam 6 or in a position embedded inside the cylinder. In this case, the heel no longer emerges enough to be seized by cam 6, but is nevertheless supported by a bridge 7, in this fashion the knitting tool is maintained at a certain height, but it does not knit. Before passing in front of design wheeI 8, all the keys are aligned in their forward position by means of a fixed cam (not shown).
  • the design wheel is provided with a given number of selectors 9 which are sorted by an endless tape 10 and according to whether their nose 11 meets a full or perforated part of the tape are pushed toward the inside of the design wheel or left outside.
  • the selectors which are pushed toward the interior are drawn in full lines on the left side of the wheel and are threaded with their hook 12 in the recess 14 of driver 13.
  • selectors 9 When this latter is moved from its inoperative position as drawn on the left side, toward its working position, as shown on the right side, it drives selectors whose hook is located in its hollow by pushing them by cone 15. These selectors 9 are thus moved into their working position (right side, drawn in full lines). Their heads 16 are pushed by the fixed eccentric washer 17 against the cylinder. These heads strike against keys which are in a forward position and embed them inside the cylinder. Selectors 9 which have remained in their inoperative position (right side, drawn in dotted lines) do not enter into contact with washer 17 and remain inside the design wheel. The corresponding keys remain in advanced position and will be raised when their heel encounters cam 6.
  • Drivers 13 are controlled in their movement along central shaft 18 *by circular cam 19.
  • This cam is equipped with movable tongues (not shown) in such a way that at least two different paths 20 can be dictated to fingers 21.
  • Each driver is rigid with such a finger.
  • the diameter of drivers 13 determines the diameter of the design wheels. In order to increase the number of wheels placed around the cylinder, there must be provided drivers of reduced diameter. It is understandable that the distance between the hooks 12 of selectors 9 decreases with the decrease in diameter. The reproduction of a design is correct only if each driver dispatches the selectors ascribed to it. If a hook moves in the direction of its thickness and/ or if the drivers have an excessive lateral play, a hook, located at the limit between two drivers can go into the slit between two adjacent drivers and block their movement, which would occasion harm to certain parts.
  • the part connecting the driver to the finger does not touch bell 25; groove 29, ensuring angular position, is made in the driver, and slider 30, fastened in the shaft, can be a cylindrical piece or a key.
  • sliders There are as many sliders as drivers and each of the latter has a slide.
  • the design wheels are rotated by a toothed wheel 32, fast on the cylinder, and meshing with pinions 33.
  • Each design wheel has such a pinion and a bell which are rigid therebetween and with their common shaft.
  • a design wheel assembly for a circular knitting machine comprising a wheel body, selectors housed in the wheel body and adapted to be moved automatically from an inoperative position to a work position to actuate knitting tools to be selected and which are then locked in a given position in order to repeat at any frequency a stored design, or again moved to their starting position, driving means for moving said selectors, a central shaft along which said drivers are movable, a finger carried by each of said drivers for sliding said selectors along said shaft, a hollow bell integral with said wheel body, said drive means being slidably guided against radial movement between said central shaft and said bell, and slide means parallel to said shaft for slidably guiding said drivers against circumferential movement on said shaft.
  • each driver is provided with sliders guided in the grooves of said bell.
  • said slide means comprises a slider secured on said shaft for movement in a groove in said driver.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Transmission Devices (AREA)
  • Slide Fasteners (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
US721842A 1967-04-20 1968-04-16 Design wheel assembly for circular knitting machine Expired - Lifetime US3540236A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH566967A CH473258A (fr) 1967-04-20 1967-04-20 Roue à dessin d'une machine à tricoter circulaire

Publications (1)

Publication Number Publication Date
US3540236A true US3540236A (en) 1970-11-17

Family

ID=4297444

Family Applications (1)

Application Number Title Priority Date Filing Date
US721842A Expired - Lifetime US3540236A (en) 1967-04-20 1968-04-16 Design wheel assembly for circular knitting machine

Country Status (3)

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US (1) US3540236A (enrdf_load_stackoverflow)
CH (1) CH473258A (enrdf_load_stackoverflow)
GB (1) GB1227604A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD237857A1 (de) * 1985-05-30 1986-07-30 Textima Veb K Mustervorrichtung fuer rundstrickmaschinen, insbesondere r/l-grossrundstrickmaschinen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2611253A (en) * 1943-02-15 1952-09-23 Edouard Dubied & Compagnie Sa Pattern device for circular knitting machines
US2900837A (en) * 1956-01-14 1959-08-25 Brandt Kurt Device for the adjustment of decorative stitch stencil in automatic zig-zag sewing machines
GB982060A (en) * 1962-09-28 1965-02-03 Dubied & Cie Sa E Improvements in or relating to selecting devices for circular knitting machines
US3416332A (en) * 1965-08-02 1968-12-17 Dubied & Cie Sa E Patterning device for jacquard circular knitting machines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2611253A (en) * 1943-02-15 1952-09-23 Edouard Dubied & Compagnie Sa Pattern device for circular knitting machines
US2900837A (en) * 1956-01-14 1959-08-25 Brandt Kurt Device for the adjustment of decorative stitch stencil in automatic zig-zag sewing machines
GB982060A (en) * 1962-09-28 1965-02-03 Dubied & Cie Sa E Improvements in or relating to selecting devices for circular knitting machines
US3416332A (en) * 1965-08-02 1968-12-17 Dubied & Cie Sa E Patterning device for jacquard circular knitting machines

Also Published As

Publication number Publication date
CH473258A (fr) 1969-05-31
GB1227604A (enrdf_load_stackoverflow) 1971-04-07
DE1635769B1 (de) 1972-09-21

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