US2512302A - Tuft-cutting mechanism for axminster-carpet and other tuftedfabric looms - Google Patents

Tuft-cutting mechanism for axminster-carpet and other tuftedfabric looms Download PDF

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Publication number
US2512302A
US2512302A US780615A US78061547A US2512302A US 2512302 A US2512302 A US 2512302A US 780615 A US780615 A US 780615A US 78061547 A US78061547 A US 78061547A US 2512302 A US2512302 A US 2512302A
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Prior art keywords
comb
cutter
plates
knife
plate
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US780615A
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English (en)
Inventor
Brinton Cecil Charles
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Brintons Carpets Ltd
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Brintons Ltd
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    • 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

  • lhe tuft-cutting mechanism embodiedi wn taintypes of looms for weavingtuftedtabries; such as the Brinton Axminsterecarpet ileum, usually involves the use of one or :more longstroke cutting-knives which, during .each .cycle of the operations, are traversed along *the :face of a staiffy knife-comb so that each operates to out off a number i of :tufts in succession ifrom the ends of yarns whichsare. resiliently :held, in a yarn carriage and which, previously, ahave been seized and pulled outwardly. away :from i the yarn carriage between the teeth 'of/the-said-knifee comb, by a system-.ofgrippers.
  • each .plate of the movin cutt combiassembly is urged ltowards and isxo'arried by the vstationaryknife comb,'by means of a'c or responding keeperplate which, at .its upper edge; abuts the knife comb and, at ,itslowered'ga'abuts the cutter comb" plate to press "both *the upper and flower portions :of the latter into facje toface contact with the 'kniiecomb; -The leeper plate is carried” by two boltsprojecting *fromt'he knife comb above "the cutter comb plate and nuts, screwed 'on to the said bolts, compress spring, washers between themselvesand; the keeper ,plate It was found; in "practice, that tuft-cutting.
  • Figure 3 is afront'elevatiorr o'fthe Figure 4 is a front elevation of the mechanism end shown in Figure 2.
  • Figure 5 is an end elevation of Figure 1.
  • Figure 6 is a section along the line M, Figure 4.
  • Figure '7 is a section along the line bb, Figure 4.
  • Figure 8 is a section along the line -0, Figure 4.
  • Figure 9 is a section along the line dd, Figure 4.
  • the cutting mechanism shown in the said drawings comprises a support l which is fixed, along one side thereof, to a shaft 2 rotatably mounted in bearings in the loom frame 3.
  • the other or forward side of the support I is formed with a platform 4 which is located above a carriage (see Figure 6).
  • the free ends of yams I are retained within compartments 8 in the said carriage, by springs 9, the yarns being spaced at the same pitch as the tufts in the finished carpet or other fabric to be produced, and their ends being arranged to protrude forwardly of the carriage compartments to enable them to be seized between the jaws of a gripper system I0 and withdrawn from the carriage through a distance equal to the desired length of the tufts (see Figure 5) preparatory to cutting a row of tufts from the yarns.
  • gripper system Any suitable form of gripper system may be assembled in the loom for seizing and withdrawing the yarn ends and for conveying successive rows of tufts into position ready for embodiment into the carpet or fabric; preferably however, the gripper system is constructed, assembled and operated as described and claimed in the specification of my co-pending application for Letters Patent of the United States Serial No. 780,616, of even date herewith.
  • the platform 4 is formed along the length of its face, with a channel or groove II in which a cutter actuating bar
  • This bar projects laterally of the support and is formed on its outer end with a head I3 which is adapted to fit within a jaw l4 extending from top to bottom of the adjacent end of a rod I5; the said rod is itself adapted to be longitudinally reciprocated in the loom frame 3 by a cam or equivalent expedient (not shown) for imparting reciprocal movement to the actuating bar
  • the face of the platform 4" is recessed at l6 along its length and a hard metal plate I1 is secured within the said recess by screws Ho.
  • the upper edge of the depression I8 is level with or slightly above the upper edges of the plates l9 sothat the latter, at the said upper edges, do not bear upon the facing plate H.
  • each plate I9 is also formed with a longitudinal depression 20 to provide bearing surfaces
  • are toothed or serrated along their lower edges, the teeth being arranged at the same pitch as the yarns in the carriage 5.
  • are deeper than the plates
  • a single stud 23 is provided for each knife comb plate and the former is so disposed upon the facing plate that it is located mid-way between the two ends of the complementary knife comb plate.
  • the plates I9 from which the cutter comb is built are sandwiched between the facing plate ll and the plates 2
  • the facing plate is formed with elongated apertures 24 through each of which a complementary lug 25 on the cutter actuating bar l2, extends into engagement with a hole 26 in, and mid-way between the ends of, the complementary cutter comb plate l9. Consequently, reciprocal cutting movements can be imparted to the sandwiched plates of the cutter comb by the bar l2 through the lugs 25. Since the bearing surfaces between the-plates l1, l9 and 2
  • the cutter comb plates are restricted against inadvertent up and down movement between the knife comb plates and the facing plate, by pegs 2
  • is carried by a pair of pins 35 on the facing plate, which pins fit'into holes 31 in the said comb plate 2
  • a spring 34 carried by each bolt on the side of the anchor plate remote from the platform, is compressed between the said plate and a milled nut 35 screwed upon the bolt.
  • a laterally extending arm or lever 3 8 is fixed one end of the shaft, thebu-ter or rreeena-br the said arm being arranged to seat upon the crown 'of a cam-operated push rod '39 which is adaptedto raise the arm in the direction of the arrow ( Figure 5) to rotate the shaft througha ffraction of a revolution so that an upwards angular movement may be imparted to the support '1 "to raise the platform supported cutting mechaiiisin 'clear of the yarn ends I (see Figure 6).
  • This upwards movement of the cutting mecha enables the grippers in to have unobstructed access to the said yarn ends.
  • 'thepush rod is lowered with the consequence that the cutting mechanism is also lowered.
  • the stroke of the bar 12 and of the cutter comb may be equal to the pitch of theteeth; jpreferably however it is equal to a multiple of ithejsaid pitch to ensure that the tufts are com- ,Iplet'ely" severed from the yarns. It'is found, in "practice, that a stroke equal'to double the pitch lefthe'teeth is fully effective for severing a row ofitufts by a single longitudinal movement of the- Lbarand cutter comb, a second row of tufts belin'g severed by the return movementof the said "barand'comb.
  • of the said knife 'comb are preferably somewhat longer than the intermediate plates (see Figure" 3).
  • the anchor plate or lip '33 may be an integral part of theplatform 4 and alt'er'n' a "tive'means maybe provided for raising the support l or for p'ermitti-ng of the automatic make and-break connectionof the bar l2 with'the-"ro'd l5.
  • Tuft cutti'ngme'chanism for 'Axinin'ster carpet 'arid dther 'tu'ftd fabric looms comprising'a support, a-knife coinb mounted on a face ⁇ of the said support, a movable cutter comb -"'sandwiched between f-the "said support and the said knife comb, the-cutter comb and knife Qdmib sedate-- ing built iip 'from a gang of plates "arranged in endf-to-end contact, each plate being formed ffalong'one edge with 'as'eries of teeth, the toothed edge of eachfknife comb-plate registering with.
  • thefsaidj b fsu'pportin'g face-and the adjacent faces;' of two'comb assembliesbeing formed with id "jsin's 'along'the length thereof for minimising: IIIlCtiQn "between the movable cutter” coin-bp' t'hez islaidface .andtheknifecomb, and means for'refciiprocating the cutter comb "assembly length- ;wi'sfe of the support for effecting its tuft cutting gt w ::n,1f.v cuttin mechanism--ror-ilxmiaster eai-- ,ptand'othertufted fabric looms, according to .claim '1, wherein the depression in theconibsu'p Ypmtihg'face of the support is of such dimensions jithat the cutter comb j'assembly contacts the said face only in the locality
  • each knife comb plate being assembled to the support on the side of the cutter comb plates remote fromlthe said support, by a pair of bolts anchored thereto, in the locality of its toothed edge and on eitherlside 10f .thesaid complementary stud, each ofvthe-said bolts extending through an additional elongated aperture in a cutter cornbplate, a hole in the said support and an aperture in an abutment;.;fi ed to the said support on the side of the cutter comb assembly remote from the knife comb assembly, a coil spring carried on the bolt portion extending beyond said fixed abutment being compressed between the latter and an abutment ad- Justable axially of the bolt, the adjacent faces of the cutter and knife comb assemblies having registering longitudinal depressions therein.-
  • An Axminster carpet or other tufted fabric loom comprising a shaft journalled in the loom frame, a support fixed along one edge upon the said shaft and having a platform formed along its opposite edge, the stationary knife comb of a tuft cutting mechanism being assembled to the said platform, and a movable cutter combbeing sandwiched between the platform and the said knife comb, each of the said combs bein built up from a gang of plates arranged in end-to-end contact, and having a series of yarn cutting teeth of the same pitch along registering edges thereof, a yarn carriage fixed within the loom frame and having an aligned series of compartments at the same pitch as the said yarn cutting teeth and a length of yarn being resiliently retained by its end in each carriage compartment, a gripper system for seizing and withdrawing the said yarn ends from the carriage, between the teeth of the cutter and knife combs and means for displacing the cutter comb assembly endwise of the platform for severing the said withdrawn yarn ends.
  • An Axminster carpet or other tufted fabric loom comprising a shaft journalled in the loom frame, a support fixed along one edge to the said shaft and having a platform formed along its opposite edge, the stationary knife comb of a :tuft cutting mechanism being assembled to the ,said platform and a movable cutter comb being ,sandwiched between the platform and the said knife comb, each of the said combs being built np from a gang of plates arranged in end-to-end contact and having a series of yarn cutting teeth formed along registering edges thereof, and each v of the knife comb plates being spring urged, in
  • gripper system for seizing and withdrawin said yarn ends from the said compartments between the teeth of the cutter and knife combs, ,means for raising and lowering the platform relatively -to the yarn carriage and means for displacing the cutter comb assembly endwise of the platform for severing the withdrawn yarn ends.
  • An A (minster carpet or other tufted fabric loom, accordingto claim 6, wherein the means for imparting endwise movement to the, movable cutter comb comprises a bar reciprocally mounted inthe platformofthe support, and having a plurality of lugs/each of which engages a plate of the said cutter comb,; the said bar extending beyond ,atleast one end of the platform, each projecting end b'e ing brought into automatically detachable engagement with a second reciprocable rod 1 mounted in the loom frame as the platform is lowered.
  • the means forimparting endwise movement to the movable cutter comb comprises a bar reciprocally mounted in, the platform of the support, and having a plurality of lugs each of which engages a, platejof ended slot formed in the adjacent end of a second reciprocable rod mounted in the loom frame,
  • a l'support having a depression formed in and "lengthwise of one face thereof, domed studs on side and lengthwise of the said depression, a stath e said-support arranged in alignment to one tionaryfknife comb mounted on said support in uspacedirelationshipl to the said facefthe said comb seatingadjacent one edge upon the said an, r d eins arme ,Withieih was s?- posite edge, a movable cutter comb consisting of a gang of plates arranged in end to end contact, sandwiched in the space between the support and the knife comb, one edge of the said cutter comb which registers with the toothed edge of the knife comb, being also formed with teeth and its opposite edge being located between the edges of the said depression, adjustable resilient means for pressing together the toothed edges of the knife and cutter comb
  • Tuft cutting mechanism for Axminster carpet and other tufted fabric looms comprising a support having a depression formed in and lengthwise of one face thereof, domed studs on the said support arranged in alignment to one side and lengthwise of the said depression, a stationary knife comb mounted on said support in spaced relationship to the said face the said comb consisting of a gang of plates each seating adjacent one edge upon a complementary domed stud and being formed with teeth along its opposite edge a movable cutter comb, also consisting of a similar but shallower gang of plates arranged in end-to-end contact, sandwiched between the said support and knife comb, the toothed edge of each cutter comb plate registering with the toothed edge of a complementary knife comb plate and the opposite edge of each of the said cutter comb plates being located between the edges of the said depression, adjustable resilient means for pressing together the toothed edges of the knife and cutter combs, and means for re-v ciprocating the cutter comb to displace its toothed edge length
  • Tuft cutting mechanism for Axminster carpet and other tufted fabric looms comprising a support having a depression formed in and lengthwise of one face thereof, domed stud on the said support arranged in alignment to one side and lengthwise of the said depression, a stationary knife comb mounted on said support in spaced relationship to the said face, the said comb seating adjacent one edge upon the said studs and being formed with teeth along its opposite edge, a movable cutter comb consisting of a gang of plates arranged in end to end contact, sandwiched in the space between the support and the knife comb, one edge of the said cutter comb which registers with the toothed edge of the knife 10 comb, being also formed with teeth and its upposite edge being located between the edges of the said depression, spring loaded bolts carried by the said knife comb adjacent its toothed edge and extending through elongated apertures in the said movable cutter comb so that the toothed edge of the knife comb is pressed resiliently against the toothed edge of the cutter comb
  • Tuft cutting mechanism for Axminster carpet and other tufted fabric looms comprising a support having a depression formed in and lengthwise of one face thereof, domed studs on the said support arranged in alignment to one side and lengthwise of the said depression, a stationary knife comb mounted on said support in spaced relationship to the said face the said comb consisting of a gang of plates each seating adjacent one edge upon a complementary domed stud and being formed with teeth along its opposite edge a movable cutter comb, also consisting of a similar but shallower gang of plates arranged in end-to-end contact, sandwiched between the said support and knife comb, the toothed edge of each cutter comb plate registering with the toothed edge of a complementary knife comb plate and the opposite edge of each of the said cutter comb plates being located between the edges of the said depression, two spring loaded bolts carried by each plate of the knife comb adjacent its toothed edge and extending through elongated apertures in the complementary plate of the movable cutter comb so that

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  • Textile Engineering (AREA)
  • Looms (AREA)
US780615A 1946-10-22 1947-10-18 Tuft-cutting mechanism for axminster-carpet and other tuftedfabric looms Expired - Lifetime US2512302A (en)

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BE (1) BE476923A (enrdf_load_stackoverflow)
FR (1) FR954385A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2619987A (en) * 1948-10-21 1952-12-02 Platt Brothers & Co Ltd Tuft-cutting mechanism for axminster carpet looms

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1828921A (en) * 1928-09-14 1931-10-27 Brintons Ltd Tuft-cutting mechanism of axminster carpet and other tufted-fabric looms

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1828921A (en) * 1928-09-14 1931-10-27 Brintons Ltd Tuft-cutting mechanism of axminster carpet and other tufted-fabric looms

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2619987A (en) * 1948-10-21 1952-12-02 Platt Brothers & Co Ltd Tuft-cutting mechanism for axminster carpet looms

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FR954385A (fr) 1949-12-23

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