US3316739A - Straight bar knitting machine - Google Patents

Straight bar knitting machine Download PDF

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Publication number
US3316739A
US3316739A US359111A US35911164A US3316739A US 3316739 A US3316739 A US 3316739A US 359111 A US359111 A US 359111A US 35911164 A US35911164 A US 35911164A US 3316739 A US3316739 A US 3316739A
Authority
US
United States
Prior art keywords
lug
carrier
cams
cam
stitch
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
US359111A
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English (en)
Inventor
Coppo Alessandro
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.)
CARBONE USA Corp A NJ CORP
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3316739A publication Critical patent/US3316739A/en
Anticipated expiration legal-status Critical
Assigned to CARBONE U.S.A. CORPORATION, A NJ CORP. reassignment CARBONE U.S.A. CORPORATION, A NJ CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KEARNEY, JOHN G.
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/02—Circular knitting machines with independently-movable needles with one set of needles
    • D04B9/025—Circular knitting machines with independently-movable needles with one set of needles with stitch-length regulation
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B11/00—Straight-bar knitting machines with fixed needles
    • D04B11/02—Straight-bar knitting machines with fixed needles with one set of needles
    • D04B11/025—Straight-bar knitting machines with fixed needles with one set of needles with stitch-length-regulating mechanism
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B7/00—Flat-bed knitting machines with independently-movable needles
    • D04B7/02—Flat-bed knitting machines with independently-movable needles with one set of needles
    • D04B7/025—Flat-bed knitting machines with independently-movable needles with one set of needles with stitch-length regulation

Definitions

  • This invention relates to a device for use in automatic cycle straight bar knitting machines for varying the stitch density of the fabric by modifying the bottom stop position of the stitch cams accordingly.
  • the device according to this invention comprises in association with each stitch cam a spider or cam disc assembly carried by the yarn carrier capable of performing a step by step unidirectional rotary motion which is effected at the proper time by a cooperating abutment provided at one end of the guide bars for the carrier.
  • FIGURE 1 is a diag-rammatical plan view of a straight bar knitting machine provided with the device according to this invention
  • FIGURE 3 is a sectional view on line IIIIII of FIG. 2 and FIGURE 4 is a sectional view on line IV-IV of FIG. 3.
  • FIGURES 2 to 4 show in detail one of the devices carried by the carrier and abutment therefor.
  • 11 denotes a disc rotatably mounted about a pivot 12 carried by the carrier.
  • the disc 11 is formed with radial grooves 11:! and corresponding tapped holes in which bolts 100 are screwed for attachment of lugs 13 acting as cams, which extend beyond the periphery of the disc and are radially adjustable in position.
  • a ratchet wheel 14 is securedly fixed beneath the disc 11 and has cooperating therewith a plate 15 mounted on a hub like portion of the wheel 14.
  • the late 15 carries a pawl 16 oscillating about a pivot 17, adapted to cooperate with the ratchet wheel 14, and is biassed by a return spring 18 attached to a pin 19 secured to the carrier.
  • the plate 15 is provided with a lower extension 15a and a top extension 151), the latter acting as a stop against the pin 19 under the action of the return spring 18.
  • the earns 13 on the spider or cam disc assembly cooperate with a bell crank lever comprising a top arm 20 and a bottom arm 21 mounted for oscillation about an axis 22.
  • the arm 20 carries at its end .a roller 23 adapted to bear on the earns 13, the arm 21 carrying a roller 24 constantly bearing on the stitch cam 25, thereby determining the lower stop position which governs the stitch density of the fabric made on the machine.
  • the rod 27 is formed with a central slot 2712, FIG- URE 3, acting as a guide about pins 30 secured to the machine frame and their respective bushings 31.
  • the rod 27 is connected at its lower end to a movable member 32 of an electromagnet 33.
  • the electromagnet 33 is disenergized and holds the rod 27 and lug 26 in their lowered position, as shown in dash-and-dot lines the lug consequently being positioned lower than the extension 15a journaled on the spider carried by the carrier, so that the carrier is normally capable of performing longitudinal movements with respect to the guide bars 20, 2b, without any interference between the spider and abutments. Under such conditrons the stitch cams 25 keep in a constant bottom stop position without modifying the stitch density of the fabric made on the machine.
  • the electromagnets 33 on each device are connected in the electric circuit of the members for the automatic cycle of the machine so that they are energized at the proper time and lift their associated rods 27.
  • the lugs 26 are then moved to their top position in the same plane as the extensions 15a journaled on the spiders. At the ends of the carriage motions the extension 1511 therefore abuts its cooperating lug 26.
  • the lug 26 moves in the direction of the arrow B in FIG. 2 against the action of the spring 29, to cause the extension 15a to reach beyond the lug and the spider to reach beyond the position of its respective stationary abutment.
  • the number of cams 13 which can be provided on the disc 11 is preferably even and can be varied to afford a number of switch over possibilities for the stitch cams suiting the particular desired pattern of the fabric to be made.
  • a straight bar knitting machine of the type comprising a yarn carrier having a forward and a rear portion, stitch cams carried by said portions, a guide bar for each of said stitch cams and means for varying the stitch density of the fabric, wherein the said means comprises, for each stitch cam carried by one of the said carrier portions, a cam disc assembly rotatably mounted on each of said yarn carrier portions, a plurality of peripheral cams adjustably secured to said cam assembly, said cams being equally spaced about the periphery of said cam assembly at varying radial distances, intermediate control means interposed between one of said peripheral cams and said stitch cam for determining the bottom position of said stitch cam, means for rotating said cam assembly step by step in one direction by the extent necessary to cause successive peripheral cams of said cam assembly to engage said intermediate control means and means for actuating the normally inoperative means for rotating said cam assembly when said yarn carrier moves to one end of a working stroke, said means for rotating said cam assembly comprising ratchet means associated with said cam assembly and a lug carried by said guide bar for

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US359111A 1963-04-19 1964-04-13 Straight bar knitting machine Expired - Lifetime US3316739A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT849763 1963-04-19

Publications (1)

Publication Number Publication Date
US3316739A true US3316739A (en) 1967-05-02

Family

ID=11126768

Family Applications (1)

Application Number Title Priority Date Filing Date
US359111A Expired - Lifetime US3316739A (en) 1963-04-19 1964-04-13 Straight bar knitting machine

Country Status (6)

Country Link
US (1) US3316739A (it)
BE (1) BE646732A (it)
CH (1) CH411203A (it)
ES (1) ES299237A1 (it)
FR (1) FR1390040A (it)
GB (1) GB1002994A (it)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1163970A (en) * 1910-11-02 1915-12-14 William Evan Chipman Knitting-machine.
GB911400A (en) * 1960-03-18 1962-11-28 Rose Stoll Improvements in or relating to cam systems for knitting machines

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1163970A (en) * 1910-11-02 1915-12-14 William Evan Chipman Knitting-machine.
GB911400A (en) * 1960-03-18 1962-11-28 Rose Stoll Improvements in or relating to cam systems for knitting machines

Also Published As

Publication number Publication date
FR1390040A (fr) 1965-02-19
CH411203A (it) 1966-04-15
GB1002994A (en) 1965-09-02
ES299237A1 (es) 1964-12-01
BE646732A (it) 1964-08-17

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Legal Events

Date Code Title Description
AS Assignment

Owner name: CARBONE U.S.A. CORPORATION, A NJ CORP., NEW JERSEY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KEARNEY, JOHN G.;REEL/FRAME:005007/0582

Effective date: 19881230