US1856783A - Loom for weaving tufted fabrics - Google Patents

Loom for weaving tufted fabrics Download PDF

Info

Publication number
US1856783A
US1856783A US491746A US49174630A US1856783A US 1856783 A US1856783 A US 1856783A US 491746 A US491746 A US 491746A US 49174630 A US49174630 A US 49174630A US 1856783 A US1856783 A US 1856783A
Authority
US
United States
Prior art keywords
arms
gripper
arm
tuft
shaft
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
US491746A
Other languages
English (en)
Inventor
Morton James
Oldroyd Francis Herbert
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.)
Morton Chemical Co
Original Assignee
Morton Chemical Co
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 Morton Chemical Co filed Critical Morton Chemical Co
Application granted granted Critical
Publication of US1856783A publication Critical patent/US1856783A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D39/00—Pile-fabric looms
    • D03D39/02—Axminster looms, i.e. wherein pile tufts are inserted during weaving

Definitions

  • a device comprises a pair of gripper arms (preferably of sickle shape) which are mounted side by side and which are provided with 1) means whereby they are moved bodily backwards and forwards past the fell of the fabric, (2) means whereby they are oscillated between positions wherein they respectively seize and release the tufts fed to them and (3) means whereby they can be independently shogged during the operation of moving towards the tuft,
  • gripper arms preferably of sickle shape
  • the means for moving the gripper-arms bodily backwards and forwards preferably comprises a primary slide indirectlysupportmg the device and adapted to receive backward and forward movements at timed intervals in the cycle of operations from appropriate. cam mechanism.
  • a secondary slide, on which the device is directly supported, is adapted to be moved transversely of theprimary slide for a purpose hereinafter described.
  • the primary slide can be arranged to work on the breastplate of the loom.
  • the means for oscillating the gripperarms preferably comprises a cam controlled rock-shaft and which carries the gripperarms in such a manner that they can be shogg'ed along it but cannot rotate relatively to it.
  • the means for the grippenarms preferably comprises two separately, controlled keys which are slidably mounted in keyways formed in the aforesaidrock-shaft and which are secured to the respective gripper-arms.
  • the gripping action of the gripper-arms is derived from hooked fingers, each of which is let into a slot in the respective arm and is controlled by cam means for moving it circularly through the arm so that its hooked portion moved towards and away from the free end thereof in order to seize and release the tufts.
  • Said cam means comprise an internal cam
  • the tufts T to be incorporated between the warps W are supplied to the gripper device by a conveyer which may consist of sewn or knitted chains C passing around sprocket wheels S, a conveyer of this construction being described in the concurrent patent specification filed of even date herewith, No. 1,811,325. It is to be understood however 'tha-tany other appropriate means for feeding forward the tufts can be employed.
  • the feed means might comprise a conveyer such as described in the prior application Serial Number 391,369 filed 9th September, 1929, Patent No. 1,80%,106 and tufts of different colors (or other characteristics) may be supplied to the conveyer by selecting mechanism such as is also described in said prior specification.
  • the gripper device which includes two side-by-side sickle-shaped gripper-arms 10, constitutes one of a number of similar devices all comprised in an assembly of parts sup-' ported indirectly by a primary slide 11 and supported directly by a secondary slide 12.
  • the function of the primary slide 11 is to carry the said assembly of parts at an in .clination lengthwise of the loom (i. e. back- .wards and forwards with respect to the breastplate 1
  • the slide 11 is mounted in a slideway 13 on the breastplate, the movements of the slide being derived from cam-mechanism (not shown) through the intermediary of a lever arm 14 coupled to the slide 11 by a link 15.
  • the function of the secondary slide 12 is to impart transverse movements to the assem ,bly of parts above referred to. To this end,
  • the slide 12 is mounted upon the slide 11 between guides 16 thereon.
  • Appropriate means would be provided for imparting the re quisite transverse movements to the slide 12,
  • the gripping action of the device is produced by two hooked fingers 21 each terminating in a hook portion 21 each of these fingers being fitted into a slot in the respective gripper-arm 10.
  • the gripping action consists of acircular movement of the finger 21 relative to the respective arm 10. This movement is derived from an internal cam device including a circular lever 22 fulcrumed at 23 to a projection 19 on the boss 19 of the respective arm 10.
  • Each arm 10 is operatively connected to the respective lever 22 through the intermediary of a bell-cranklever 24?, 2a", which is fulcrumed at 25 to the ring lever 22.
  • the arm 24 of the bellcrank-lever is pivotally attached at 25 to the finger 21 while the other arm 24 is acted upon by a spring 26 which is coiled around a pin 27 projecting from the lever 22 and which is placed under compression by jamnuts 28.
  • the cam proper of the cam device comprises a hump 31 and two spaced humps 32 and 32 defining a recess, these humps all being formed on the outer periphery of a sleeve 30 rotatably mounted on the boss 19.
  • the cam humps above referred to coact with corresponding humps 33 and 34 formed on the internal periphery of the ring lever 22.
  • the movements ofthe ring 30 requisite for operating the ring-lever 22 would be derived from cam-mechanism (not shown) through the intermediary of a rock-shaft 37 journalled in each cheek 17 and having a crank 38 which is coupled by a link 39 'to an arm l-O projecting from the ring 30.
  • the link 39 is universally jointed at both ends to the crank 38 and arm 40 respectively.
  • cam-mechanisms for actuating the various motions of the parts com prised in, and associated with, the tuft introducing and binding devices would all be driven by any convenient rotary part or parts of the loom, and certain of the cams might be changeable so that variations in the timing could be made to suit the requirements of difierent fabrics.
  • the entire device is carried bodily forwards by the slide 11 at a downward inclination.
  • the shaft 18 is rocked clockwise and turns the arm 10 from its Fig. 1 position into its Fig. 2 position, in which the gripper is open and in the correct position to receive a tuft.
  • This position of the gripper arm is also shown by dottedlines in Fig. 1.
  • the rod 39 pulls the ring 30 through a small angle into its Fig. 3 position, in which the hump 3% engages the long hump 32" and causes the ring lever 22 to pivot about the pin 23, with the result that the gripper seizes a tuft.
  • the shaft 18 now rocks back counterclockwise, the gripper arm 10 turning in unison with the shaft.
  • the gripper is held tightly closed by the long hump 32
  • the entire device is carried bodily backwards at an upward inclination by the slide 11, and finally the hump 34 moves beyond the hump 32" and the gripper is opened to release the tuft.
  • the rod 39 moves the sleeve 30 back through a small angle ready for the next cycle of operations.
  • each gripper arm 10 cooperates with the warp threads to which the tufts are to be knotted is illustrated in Figs. l and 5.
  • Fig. i the left hand warp NV of a pair of warps N Wis raised and to the left of the arm 10, which commences to move sidewise to the left below W Then VI is lowered, and in lowering moves past the right hand side of the arm 10 (see Fig. 5).
  • the arm 10 can now be rotated upwards to engage a tuft without fear of the warp W slippi off the arm.
  • the above-described action takes place in connection with the knotting operations hereinafter explained.
  • a loom equipped with devices according to this invention can be employed to weave, inter aha, oriental carpets in which the pile is incorporated by knotting in the Turkish or Ghiordes style, or in the Persian or Selina style, or it can be employed to weave plain tufted carpets.
  • a single device including one pair of gripper arms 10 and 10 will now be described in connection with the tying of a Vietnamese or Ghiordes knot with reference to Figs. 13, the gripper arms being assumed *o v red and in their rearward posis snown by full lines in Fig. 1.
  • the pper arms are disposed close together I ght hand side of he two warps W and W T to which the tuft has to be knotted (see Fig. ,6).
  • the two warps are assumed to be lowered (i. e. unshed).
  • the left-hand warp W is lifted and the device is carried bodily by the slide 11 forward so that the gripper arms 10 10 move into proximity to the warps. Both arms are then shogged laterally to the left by their keys 20, with the result that the arm 10 engages below the warp WV
  • the warp Y W is now lowered across the arm 10 (see Z
  • the right hand warp W? is next raised, and the right hand arm 10 is shogged to the r ght by its key 20, and passes under t .e warp W which is'next lowered across said arm (see Fig. 8).
  • the two arms are now caused to rock upwards by the shaft 18 until eventually they move into register with a t it T and grip it (see Fig. 9).
  • the arms are rockeddownwards, carrying the tuft T between them and gradually moving together below the warps as the arms approach their lowermost position (see Figs. l0 and 11).
  • the device as a whole is moved bodily backwards by the slide 11, with the result that the arms first of all move clear of thewarps (see Fig. 1 and then draw the knot taut. Thereafter the gripper fingers open and release the tuft, leaving it incorporated in the carpet.
  • the well-known form of this knot is shown in Fig. 13.
  • the arm 1O is next sho gged to the right, so as to bring the warp Vi into the correct relationship with the arm 10 r
  • the device as a whole is now moved bodily forwards by the slide 11, and the gripperv arms are rocked upwards to seize'the'tuft T (see Fig. 17). Thereafter, the arms are rocked downwards, and the device as a whole is gradually drawn back by'the slide 11, the arms in the meatime gradually moving together (see Figs. 18, 19 and 20). Ultimate ly the arms are moved clear of the warps (see Fig. 21), and the knot is drawn taut into the fabric. The well known form of this knot is illustrated in Fig. 22.
  • a device for introducing said tufts to the fell of a fabric being woven and binding themtherein comprising a pair of side-by-side oscillatory arms with gripper fingers, a primary slide indirectly supporting the device, mechanism for moving said primary slide backwards and forwards so that said fingers are carried toand-fro past the fell of the fabric, a secondary slide directly supporting the device and movably mounted on the primary slide, means for moving said secondary slide transversely of the primary slide, mechanism for opening and closing the fingers, mechanism for oscillating the arms between positions wherein the fingers close and open respectively to seize and release successive tufts, and
  • a device for introducing said tufts to the fell of a fabric being woven and binding them therein comprising a pair of side-by-side oscillatory arms with gripper fingers, a support for said device including a rock-shaft to which the device is keyed against relative rotation but along which the device is slidable so that shogging of the arms can be effected, mechanism for movin said support backwards and forwards so that said fingers are carried to-and-fro past the fell of the fabric, mechanism on said rock-shaft for opening and closing the fingers, mechanism for imparting rotational movements to said rock-shaft so as to oscillate said arms between positions wherein the fingers close and open respectivelyto seize and release successive tufts, and means for independently shogging the arms during the operation of moving the device towards a tuft, seizing the tuft, withdrawing it .and introducing it to the fell of the fabric, so that the
  • a device for introducing said tufts to the fell of a fabric being woven and binding them therein comprising a pair of side-by-side oscillatory arms with gripper fingers, a support for said device including a rockshaft, a pair of keys slidably mounted in keyways in said rockshaft, an operative connection between the keys and the respective arms, mechanism for moving said support backwards and forwards so that said fingers are carried to-andfro past the fell of the fabric, mechanism for opening and closing the fingers, means for imparting rotational movements to the rock-shaft so asto oscillate the arms in unison between positions wherein the fingers close and open respectively to seize and release successive tufts, and means for sliding the individual keys along the rock-shaft so as to shog the respective arms during the operation of moving the device towards a tuft, seizing the tuft, withdrawing it and intro ducing it to the fell of the fabric, so that the
  • a device for introducing said tufts to the fell of a fabric being woven and binding them therein comprising a pair of side-by-side oscillatory arms, finger members movably carried by said arms and cam means for moving the finger members relatively to said arms so as to close or open said members, a support for said device, mechanism for moving said support backwards and forwards so that said fingers are carried to-and-fro past the fell of the fabric, mechanism on said support for actuating said cam means to openor close the fingers, mechanism for oscillating the arms between positions wherein the fingers are closed and opened by said cam means to some and release successive tufts, and means for independently shogging the arms during the operation of moving the device towards a tuft, seizing the tuft, withdrawing it and introducing it to the fell of the fabric, so that the tuft is effectively bound therein.
  • a device for introducing said tufts to the fell of a fabric being woven and binding them therein said device including a pair of side-by-side arms and fingers movably carried by said arms so that said fingers can be closed against said arms or opened, a rock-shaft supporting said device, an external cam element operatively connected to each arm and finger, an internal cam element cooperating with said external element and rotatably mounted on the rockshaft, means for partly rotating said internal cam element so as to pivot the respective external element and thereby close or open the fingers, mechanism for moving said rockshaft backwards and forwards so that said fingers are carried to-and-fro past the fell of the fabricfmechanism for oscillating the rock-shaft so as to move the arms between positions wherein the fingers are closed and woven andbinding them therein, said device including a pair of side-by-side sickle-shaped armsand arcuate fingers movabl-y fitted into said arms so that
  • a sup port assembly means for imparting longitudinal movements thereto, a pair ofsickle shaped gripper arms having bosses carried by said support assembly, means for sliding the bosses separately so as to shog the arms, means for partially rotating said bosses so as to oscillate the arms in unison, an arcuate finger slidingly fitted in each gripper arm and having a gripping end projecting therefrom, a ring lever operatively connected to said finger and fulcrumed on the respective boss, an internal cam operatively associated withsaid ring lever, and means for turning said cam so as to displace said ring lever and thereby cause the gripping end of the finger to close against, or open outwards from, the
  • a support assembly means for imparting longitudinal movements thereto, a rock-shaft constituting an element of said assembly, a pair of sickle-shaped gripper arms having bosses which are slidably mounted and held against rotation on the rock-shaft, means for sliding the bosses separately along the rockshaft', means forrocking said rock-shaft so as to oscillate the arms in unison, an arcuate finger slidingly fitted in each gripper arm and having a gripping end projecting therefrom, a ring lever operatively connected to said finger and fulcrumed onthe respective boss, an internal cam turnable about the axis of the rock-shaft and operativel-y associated with said ring-lever, and means for turning said cam so as to displace said ring-lever and thereby cause the gripping end of the finger to close against, or open outwards from, the respective arm.
  • a support assembly means for imparting longitudinal movements thereto, a rock-shaft constituting an element of said assembly, a pair of keys mounted in keyways in said rock-shaft,
  • mary slide means for imparting longitu dinal movements thereto, a secondary slide on said primary slide, means for imparting transverse step-by-step movements to said secondary slide, a rock-shaft journalled thereon, a pair of keys mounted in keyways,
  • a primary slide means for imparting longitudi nal movements thereto, a secondary slide on said primary slide, means for imparting transverse step-by-step movements to said secondary slide, a rock-shaft journalled thereon, a pair of keys mounted in keyways in said rock-shaft, means for moving the respective keys endwise along said rock-shaft, a pair of sickle-shaped gripper arms having bosses which are slidably mounted on the rock-shaft and which are respectively secured to the keys, means for rocking said rock-shaft so as to oscillate the arms in unison, an arcuate finger slidingly fitted in each gripper arm and having a gripping end projecting therefrom, a ring lever on the respective boss and connected through a resilient contrivance to the respective finger, an internal cam turnable about the axis of the rock-shaft and operatively associated with said ring lever, and means for turning said cam so as to displace said ring lever and thereby cause the gripping end
  • a device for introducing said tufts to the fell of a fabric being woven and knotting them to warps being incorporated in said fabric comprising a pair of side-by-side grippers, a support for said device, mechanism for moving said support backwards and forwards so that said device is carried bodily towards and away from the fell of the fabric, mechanism for opening and closing the grippers, means for shogging each gripper independently to engage a raised warp, and mechanism firstly for moving each gripper across and beyond the warp (while the latter is being lowered) in order to grip a tuft and secondly for returning each gripper in order to tie the tuft ingo a knot at the fell and then release the tu t.
  • a device for introducing said tufts to the fell of a fabric being woven and knotting them to warps being incorporated in said fabric comprising a pair of side-by-side arcuate grippers, a support for said device, mechanism for sliding said support backwards and forwards so that said device is carried bodily towards and away from the fell of the fabric, mechanism for opening and closing the grippers, means for shogging each gripper independently to engage a raised warp, and mechanism for oscillating said grippers in unison so that each gripper firstly is moved across and beyond the warp (while the latter is being lowered) in order to grip a tuft and secondly is returned in order to tie the tuft into a knot at the fell and then release the tuft.
  • a device for introducing said tufts to the fell of a fabric being'woven and tying them in Ghiordes knots to warps being incorporated in said fabric comprising a pair of side-by-side oscil-i the grippers inunison, said shogging means and oscillating mechanism serving to perform the following operations, namely: shog the grippers in one direction so that one of them engages and displaces a raised warp, move the other gripper in the opposite direction in order to engage and displace another raised warp, move both grippers beyond the warps (while these are being lowered) in order to seize a tuft by its ends, return both grippers andshog them relatively towards each other in order to tie a Ghiordes knot and release the tuft.
  • a gripper loom for weaving fabrics and including. means for feeding pile tufts in succession, a device for introducing said tufts to the fell of a fabric being woven and tying them in Sehna knots to warps being incorporated in said fabric, said device comprising a pair of side-by-side oscillatory grippers, a support forsaid device, mechanism for moving said support backwards and forwards so that said device is carried bodily towards and away from the fell of the fabric, mechanism for opening and closing the grippers, meansforshogging' each gripper independently to engage a raised warp, and mechanism for oscillating the grippers in unison, said shogging means and oscillating mechanism serving to perform the following operations, namely: shog one gripper in one direction to engage an displace a raised warp, similarly shog the other gripper to engage and displace another raised warp, shog back in the opposite direction the second-mentioned gripper (while the warps are being lowered), move

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Treatment Of Fiber Materials (AREA)
US491746A 1929-11-21 1930-10-28 Loom for weaving tufted fabrics Expired - Lifetime US1856783A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB35597/29A GB342421A (en) 1929-11-21 1929-11-21 Improvements in or relating to looms for weaving tufted fabrics

Publications (1)

Publication Number Publication Date
US1856783A true US1856783A (en) 1932-05-03

Family

ID=10379492

Family Applications (1)

Application Number Title Priority Date Filing Date
US491746A Expired - Lifetime US1856783A (en) 1929-11-21 1930-10-28 Loom for weaving tufted fabrics

Country Status (5)

Country Link
US (1) US1856783A (enrdf_load_stackoverflow)
DE (1) DE557292C (enrdf_load_stackoverflow)
FR (1) FR706038A (enrdf_load_stackoverflow)
GB (1) GB342421A (enrdf_load_stackoverflow)
NL (1) NL33078C (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1535769B1 (de) * 1963-09-17 1971-07-29 Alfa Laval Bergedorfer Eisen Verfahren und Vorrichtung zum mechanischen Weben und Knuepfen von Florgeweben

Also Published As

Publication number Publication date
DE557292C (de) 1932-08-20
GB342421A (en) 1931-02-05
NL33078C (enrdf_load_stackoverflow)
FR706038A (fr) 1931-06-17

Similar Documents

Publication Publication Date Title
US1856783A (en) Loom for weaving tufted fabrics
US1802311A (en) Loom for weaving having stationary weft supplies
US3249127A (en) Needle loom
US2437379A (en) Loom for weaving pile fabric
US2365008A (en) Electric stop motion for axminster looms
US3377821A (en) Apparatus for reinforcing fibrous material
US1909113A (en) Loom for weaving tufted pile fabrics
US3521676A (en) Gripper loom for weaving pile fabrics and method
US858961A (en) Pile-fabric loom.
US1849534A (en) Method of and apparatus for weaving knotted pile fabrics
US1728497A (en) Weaving machine
US1561282A (en) Loom for weaving pile fabrics
US891147A (en) Loom for the weaving of tufted fabrics.
US586413A (en) Fringe-knotting machine
US451441A (en) Wit nesses
US1677426A (en) Actuating mechanism in oriental-rug looms
US1027995A (en) Loom for weaving pile fabrics.
US1916290A (en) Loom for weaving oriental knotted fabrics
US1861004A (en) Pile fabric loom
US754883A (en) Apparatus for the manufacture of tufted fabrics.
US454414A (en) Rhe noh
US2754854A (en) Weft replenishing loom with rotary magazine
US1944121A (en) Tuft pile fabric loom
US597909A (en) karlander
US1672609A (en) Axminster loom