US2489513A - Machine for making pile fabrics - Google Patents

Machine for making pile fabrics Download PDF

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Publication number
US2489513A
US2489513A US734139A US73413947A US2489513A US 2489513 A US2489513 A US 2489513A US 734139 A US734139 A US 734139A US 73413947 A US73413947 A US 73413947A US 2489513 A US2489513 A US 2489513A
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United States
Prior art keywords
needle
looper
members
needles
machine
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Expired - Lifetime
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US734139A
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English (en)
Inventor
Ballamy Leslie Mark
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HIGH SPEED MACHINES
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HIGH SPEED MACHINES
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    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B3/00Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing
    • D05B3/02Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing with mechanisms for needle-bar movement
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05CEMBROIDERING; TUFTING
    • D05C15/00Making pile fabrics or articles having similar surface features by inserting loops into a base material

Definitions

  • This invention relates to sewing machines for making pile fabrics, and more particularly to those machines in which a reciprocating sewing needle cooperates with a looper device to form upon a looper member a row of looped stitches which latter are severed in succession by a cutter associated with thev looper device.
  • Such machines are generally known as tufting machines.
  • the invention is however also applicable to ordinary multi-needle sewing machines. It is the object of the invention to provide improvements in tufting machines of the above kind and sewing machines, more particularly in connection with the looper mechanism thereof, in order that the machine may be capable of operating faster and better than those at present in use.
  • a further object is to provide looper mechanism which is relatively simple to manufacture and is capable of being finely adjusted, the improved mechanism being intended more especially for use in machines having a large number of sewing needles operating simultaneously side by side.
  • a sewing machine comprises a plurality of reciprocating needle bars which are operated in a plurality of phases, looper members which move forwards and backwards alongside the needle paths to pick up the needle loops, and drivingmeans arranged to operate the needle bars and looper members in frequency relation so that said looper members operate as a unit to make a plurality ofv movement cycles for each phase cycle of the needle bars.
  • the invention further provides a tufting machine comprising a plurality of reciprocating needle bars which are operated in a plurality of phases, looper members which move forwards and backwards alongside the needle paths to pick up the needle loops, driving means arranged to operate the needle bars and looper members in frequency relation so that said looper members operate as a unit to make a movement cycle for each phase cycle of the needle bars, and cutter members which cooperate with the loopers to sever the loops disposed thereon.
  • Figure 1 is a front elevation showing the principal working parts of a multi-needle bar tufting machine
  • Figure 2 is a side elevation of the driving mechanism as seen in the direction of the arrow 11;
  • FIG. 3 is a diagram showing the relative positions of a typical needle and its looper member during a complete wo king cycle of the needle.
  • FIG. 4 is a view corresponding to Figure .2, but showing an alternative driving mechanism for the looper members and cutters.
  • a base I0 supports a pair of side uprights II and I2 which carry a transverse member I3, This is fitted with a number of guides Hi, the machine illustrated having four, one for each of four vertical needle bars I5, I6, I! and I8,
  • A-multi-throw crankshaft I9 mounted in bearings 20 has four crankpins 2
  • Each needle bar has at its lower end a transversely extending holder 26 carrying a number of spaced machine needles 21.
  • the backing material to be sewn and tufted is fed by any suitable mechanism (not shown) across the upper surface of a work table 28,.the rows of tufting produced by the needles 2'! thus being spaced substantially equidistantly across the width of said backing material.
  • and 23 are disposed in line and are out of phase with respectto the remaining two crankpins 22-and 24, so that when the needle bars I5 and I'lare rising, the needle bars I6 and I8 are falling, and vice versa.
  • the crankshaft I9 is continuously rotated by a gear wheel 29 from suitable driving means (not shown).
  • looper members are of the usual type having an eye adjacent the point and each is threaded in the normal manner with yarn. (not shown) fed from the correspondingone of a series of supply bobbins. Each time a needle 21 penetrates the backing material, the yarn is carried through by it and is caught from below by a corresponding looper member which holds the loop until it is later severed by a cutter, forming a pair of ends.
  • the looper members are shown at 30 in Figure 1, each being hook-shaped as seen in Figure 2; they are secured side by.
  • each cutter slides against the corresponding looper member so as to shear the yarn loops extending around said looper member.
  • the cutter shaft 32 has at one or each end a depending arm 34 which is connected by a link 35 with the lower end of an arm 36 fast upon the looper shaft 3
  • the vertical shaft 38 rotates at the same speed as the crankshaft l 9 and as the bevel gear wheels 40, 41 are of equal size, the gear wheel 4'2 also turns at the same speed as the crankshaft 19.
  • the gear wheel 42 is twice the diameter of the gear wheel 44 so that the latter rotates twice for every revolution of the crankshaft, thus causing the looper shaft 3!
  • the looper members have twice the normal speed of travel past the needle, so that the looper member can swing through the yarn loop and engage fully therewith during a very short initial upward movement of the needle, thus enabling the looper mechanism to operate with more certainty than hitherto; also it is found that the customary side recess in the needle is rendered unnecessary, so that the needles are more robust and easier to manufacture.
  • the first'eXtreme'left-hand position is reached by the looper member when the needle 21" has only arrived at the position 0, and while the needle 21 is still rising to its fully raised position at e the looper member moves back to its right-hand position, the yarn loop being retained by the usual barb-like projection 53 on the nose of the looper member.
  • the needle 2'! now .descends and the looper member 30 moves past the needle track (indicated by the broken line 54),
  • the invention has been described in conjunction with a simple type of tufting machine it will be seen that it may be applied to various forms of machine, either single needle or multi-needle. It is found that the invention is particularly useful in machines of the walking needlebar type where the backing material or material to be sewn is fed past the needles at a continuous rate and, .by rocking the guides M, the needles are caused to travel forwards (with reference to the direction of travel of the backing material) While they are in the material, and backwards when elevated and free.
  • a sewing or tufting machine of the type including a plurality of needles which are reciprocated in a plurality of phases and a like number of oscillatable looper members which are individually and respectively cooperative with said needles for forming loops, the combination with said looper members of a single shaft supporting all of said members for movement together as a unit, and drive means for driving said shaft and looper members in frequency relation with the phases of said needles so that said looper members oscillate for each reciprocation phase of the needles.
  • a tufting machine of the type including a plurality of needles which are reciprocated in a plurality of phases and a like number of oscillatable looper members which are individually and respectively cooperative with said needles for forming loops. and oscillatable cutter members cooperative with said looper members for severing the loops therearound, the combination with drive means for driving said needles and looper and cutter members in frequency relation with all of said looper and cutter members unitarily oscillating once for each phase of reciprocation of said needles.
  • a tufting machine comprising a plurality of needle bars, needles on said needle bars, a multithrow crankshaft for reciprocating said needle bars in a plurality of phases, a plurality of loopers for respectively cooperating with the individual needles, said loopers being mounted to oscillate as a single unit without phase displacement, a plurality of cutter members mounted to move into cutting relationship with the loopers, and driving means for moving the loopers and cutters at an oscillation frequency which is equal to the product of the crankshaft frequency multiplied by the number of phases of the needle bars, whereby each looper makes an operative stroke each time the corresponding needle is at the end of its advancing stroke, and in addition it makes at least one idle oscillation while the said needle is away from its fully advanced position.
  • a tufting machine comprising a plurality of needle bars, needles on said needle bars, a multithrow crankshaft for reciprocating said needle bars in two phases 180 apart, a plurality of loopers for respectively cooperating with the individual needles, said loopers being mounted to oscillate as a single unit without phase displacement, a plurality of cutting members mounted to move into cutting relationship with the loopers, and driving means for moving the loopers and cutters at an oscillation frequency which is equal to twice the crankshaft frequency, whereby each looper makes an operative stroke each time the corresponding needle is at the end of its advancing stroke, and in addition it makes one idle oscillation while the said needle is away from its fully advanced position.
  • a tufting machine comprising a plurality of needle bars, needles on said needle bars, a multithrow crankshaft for reciprocating said needle bars in three phases apart, a plurality of loopers for respectively cooperating with the individual needles, said loopers being mounted to oscillate as a single unit without phase displacement, a plurality of cutter members mounted to move into cutting relationship with the loopers, and driving means for moving the loopers and cutters at an oscillation frequency which is equal to three times the crankshaft frequency, whereby each looper makes an operative stroke each time the corresponding needle is at the end of its advancing stroke, and in addition it makes two idle oscillations while the said needle is away from its fully advanced position.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US734139A 1946-03-13 1947-03-12 Machine for making pile fabrics Expired - Lifetime US2489513A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7897/46A GB615337A (en) 1946-03-13 1946-03-13 Improvements in or relating to machines for making pile fabrics

Publications (1)

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US2489513A true US2489513A (en) 1949-11-29

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US734139A Expired - Lifetime US2489513A (en) 1946-03-13 1947-03-12 Machine for making pile fabrics

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US (1) US2489513A (xx)
BE (1) BE484422A (xx)
FR (1) FR970523A (xx)
GB (1) GB615337A (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2879730A (en) * 1957-11-12 1959-03-31 Lees & Sons Co James Improved looper for pile fabric tufting machines
US3748914A (en) * 1970-08-22 1973-07-31 Singer Co Tufting machines

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1091062A (en) * 1913-05-05 1914-03-24 Nat Sewing Machine Co Revolving-hook sewing-machine.
US2214767A (en) * 1937-08-03 1940-09-17 Sr Walter Tibbs Kenner Tufting attachment for sewing machines
US2217967A (en) * 1937-02-03 1940-10-15 American Hair & Felt Company Stitching mechanism
US2411267A (en) * 1944-07-20 1946-11-19 Hamrick Lyman Multiple needle tufting machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1091062A (en) * 1913-05-05 1914-03-24 Nat Sewing Machine Co Revolving-hook sewing-machine.
US2217967A (en) * 1937-02-03 1940-10-15 American Hair & Felt Company Stitching mechanism
US2214767A (en) * 1937-08-03 1940-09-17 Sr Walter Tibbs Kenner Tufting attachment for sewing machines
US2411267A (en) * 1944-07-20 1946-11-19 Hamrick Lyman Multiple needle tufting machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2879730A (en) * 1957-11-12 1959-03-31 Lees & Sons Co James Improved looper for pile fabric tufting machines
US3748914A (en) * 1970-08-22 1973-07-31 Singer Co Tufting machines

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Publication number Publication date
GB615337A (en) 1949-01-05
FR970523A (fr) 1951-01-05
BE484422A (xx)

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