US3605447A - Straight bar knitting machine fabric draw-off means - Google Patents

Straight bar knitting machine fabric draw-off means Download PDF

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Publication number
US3605447A
US3605447A US867305A US3605447DA US3605447A US 3605447 A US3605447 A US 3605447A US 867305 A US867305 A US 867305A US 3605447D A US3605447D A US 3605447DA US 3605447 A US3605447 A US 3605447A
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US
United States
Prior art keywords
bar
draw
fabric
knitting machine
hooks
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
US867305A
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English (en)
Inventor
Raymond Blood
Alan John Pearson
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.)
William Cotton Ltd
Original Assignee
William Cotton Ltd
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 William Cotton Ltd filed Critical William Cotton Ltd
Application granted granted Critical
Publication of US3605447A publication Critical patent/US3605447A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D04B15/88—Take-up or draw-off devices for knitting products
    • D04B15/885—Take-up or draw-off devices for knitting products for straight-bar knitting machines

Definitions

  • This invention is for improvements in or relating to straight bar knitting machines of the type having drawotf means in which there are main draw-off rollers widely spaced from the needles, an initial draw-01f hook bar for hooking onto fabric during an early part of its production, and spaced cam-racked guide chains for carrying the hook bar, while drawing off the fabric during its production, to a position enabling the fabric to be relinquished to the main draw-off rollers for further draw-off.
  • a difliculty with initial draw-off hook bars has been that they may be required to be hooked onto the fabric when it is of very short length, possibly only a few courses long, and while the fabric is untensioned form. Consequently the hooks do not necessarily engage the fabric in the same course, and this can result in the applied load being distributed between the points in undesirably uneven manner.
  • An object of the invention is to provide hook bar draw-off mechanism, for fabric being produced on a straight bar knitting machine, of such improved construction that the different hooks are not subjected to undesirably uneven loads.
  • the invention provides a draw-off hook bar, for drawoff of fabric being produced on a straight bar knitting machine, in which the hooks are mounted on the bar with spring or like means providing for the hooks being independently self adjustable to a working load when applied.
  • spring or like devices there is a plurality of spring or the like devices, one for each hook.
  • each spring like device comprises an extension of the shank of the hook shaped into spring like form.
  • Each spring like extension may be of coiled leaf spring form,
  • the leaf spring formations are disposed in a longitudinal recess in the bar, and they are retained in position by a longitudinally extending cap removably secured by screws to the bar.
  • FIG. 1 is an exploded perspective view of one end part of a fabric draw-off hook bar according to the invention.
  • FIG. 2 is a similar view to FIG. 1 showing the hooks hooked onto fabric being produced in a straight bar knitting machine.
  • the draw-off hook bar comprises a body part 1 and a longitudinally extending cap 2 which is adapted to be removably fitted to the body 1 by screws such as 3 and clearance and screw holes such as 4, 5.
  • the bar body 1 is provided with a series of equally spaced hooks such as 6, each of which has a fabric penetrating point 6a and a shank 6b.
  • the shanks 6b extend through transverse slots such as 7 in the bar body 1 and each shank 6b is connected to a coil leaf spring such as 8.
  • the coil leaf springs 8 are conveniently disposed in a longitudinal recess 9 in the bar body 1, the recess 9 providing shoulders 10, 11 between which the leaf springs 8 are constrained.
  • leaf springs 8 are formed as extensions of the shanks 6b for which purpose the shank extensions are bent round to form an arm portion 8a which bears against the shoulder 10*, at least one coil portion 8b, and a free arm portion which bears against the shoulder 11.
  • shank is further formed into a further coil portion 8d between the shank 6b and the arm 8a.
  • the hooks are hooked onto fabric as it is being knitted in a straight bar knitting machine by bearded needles 12, FIG. 2.
  • the spring mounting of the hooks will advantageously allow the hooks to adapt themselves to the knitting motions of the needles.
  • the hook bar may be rigidly secured to a pair of spaced endless chains which are adapted by cam operated racking means to rack the hook bar away from the needles 12 as the fabric is being produced.
  • the hooks and springs are retained in the bar by the cap 2.
  • a straight bar knitting machine fabric draw-off hook bar comprising, in combination, a single bar body part adapted for use in a fabric draw-off mechanism, a longitudinally extending cap removably fitted onto said bar body part, a longitudinally extending recess in said bar body part providing first and second opposite side shoulders, a series of longitudinally spaced transverse slots extending through said first side shoulders, a series of fabric draw-off hooks having shank portions extending from their hooks through said transverse slots into said longitudinally extending recess in said bar body part, and extensions of said shank extending in said recess and bent into leaf spring formations with opposite side arms extending in opposite directions, respectively, and longitudinally along said first and second opposite side shoulders, respectively, of said recess, said fabric draw-01f hooks being retained in position by said cap and being independently self adjusting to a working load of fabric attached to said hooks and being produced by said machine.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US867305A 1968-11-02 1969-10-17 Straight bar knitting machine fabric draw-off means Expired - Lifetime US3605447A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5203968 1968-11-02

Publications (1)

Publication Number Publication Date
US3605447A true US3605447A (en) 1971-09-20

Family

ID=10462407

Family Applications (1)

Application Number Title Priority Date Filing Date
US867305A Expired - Lifetime US3605447A (en) 1968-11-02 1969-10-17 Straight bar knitting machine fabric draw-off means

Country Status (5)

Country Link
US (1) US3605447A (de)
CH (1) CH507402A (de)
DE (1) DE1954437A1 (de)
FR (1) FR2022475A1 (de)
GB (1) GB1252292A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5056247A (en) * 1990-06-06 1991-10-15 Loomie Leo S Fabric tensioning device having a collapsible support, elastic means, and fabric hooks
US5870904A (en) * 1996-11-06 1999-02-16 Shima Seki Mfg., Ltd. Knitting fabric take-down device of flat knitting machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5056247A (en) * 1990-06-06 1991-10-15 Loomie Leo S Fabric tensioning device having a collapsible support, elastic means, and fabric hooks
US5870904A (en) * 1996-11-06 1999-02-16 Shima Seki Mfg., Ltd. Knitting fabric take-down device of flat knitting machine

Also Published As

Publication number Publication date
GB1252292A (de) 1971-11-03
CH507402A (fr) 1971-05-15
DE1954437A1 (de) 1970-05-06
FR2022475A1 (de) 1970-07-31

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