US3376901A - Device for making up a weft to be used in connection with a loom - Google Patents

Device for making up a weft to be used in connection with a loom Download PDF

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Publication number
US3376901A
US3376901A US506067A US50606765A US3376901A US 3376901 A US3376901 A US 3376901A US 506067 A US506067 A US 506067A US 50606765 A US50606765 A US 50606765A US 3376901 A US3376901 A US 3376901A
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United States
Prior art keywords
shaft
thread
channel
loom
loop
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Expired - Lifetime
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US506067A
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English (en)
Inventor
Strake Lambertus Te
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.)
Machinefabriek L te Strake NV
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Strake Maschf Nv
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/368—Air chamber storage devices

Definitions

  • a device for making up a weft to be used in connection with a loom comprising apparatus for taking up a measured length of thread drawn from a thread package, which apparatus is associated with a blowing device for inserting such measured length of thread from said apparatus into the shed of the loom by jet action, at least two channels forming part of said apparatus, each of which is in the form of a shaft for receiving a loop constituting a portion of such measured length of thread, each of which has one end debouching into a central chamber that is common to the channels and is connected to the blowing device, and each of which has at its other end an outlet for withdrawal of a stream of air to .draw such loop into the channel.
  • This invention relates to a loom provided with a shaft for taking up a loop in a measured length of a thread by suction action, which thread is drawn from a thread package, one end of said shaft being connected to a suction device and the opposite end of said shaft cooperating with a blowing device for inserting said measured length from the shaft into the shed by jet action.
  • the invention relates to a device for making up a weft having a shaft, in which the length of the shaft is less than the length of the loop to be used for the weft.
  • the internal space of the shaft possesses a central chamber, into which two or more channels debouch, which channels are adapted as separate shafts, which separate shafts at their ends opposite to the ends debouching into the central chamber are connected to a suction device.
  • FIG. 1 is a longitudinal section through a device according to the invention, which device comprises a shaft connected to a blowing device and an auxiliary shaft.
  • FIG. 2 is a cross section along the line IIII in FIG. 1.
  • FIG. 3 is a perspective view of a loom provided with a device according to the invention.
  • FIG. 1 The warp threads of a loom are indicated in FIG. 1 with the reference numeral 1. Further a part of the reed 2 is visible in this figure. A blowing device 3 is positioned laterally of the reed 2 and laterally of the shed.
  • Said blowing device 3 is provided with a shaft generally indicated by the reference numeral 4.
  • This shaft is adapted to take up a loop of a thread 5, which is drawn from the thread package 7 by means of the rollers 6.
  • the rollers 6 rotate with a constant speed depending on the working speed of the loom.
  • An auxiliary shaft 8 is situated between the shaft 4 and the rollers 6. The operation of this auxiliary shaft is described in U.S. Pat- 'ent 3,137,322.
  • the mouth 9 of the auxiliary shaft 8 is situated in front of an entrance 10 in the side wall of a central chamber 11 of the shaft 4.
  • Each channel has in its interior a flat cleft with widened sides as described in U.S. Patent 3,024,814. As appears from FIG. 1 the channels converge in the direction of the central chamber 11 of the shaft 4.
  • the ends of the channels opposite to the ends merging into the central chamber are connected to a suction device.
  • the ends of the channels, which are connected to a suction device are provided with an opening, which can be closed by a valve.
  • the channels 12a, 12b and 120 are thus provided with valves 13a, 13b and respectively.
  • each channel is provided with an opening, which can be closed by a valve 14.
  • These openings not only eliminate a pressure wave within the shaft as described in U.S. Patent 3,110,325, but also permit air to enter the shaft when the blowing device becomes operative. Air thus entering the shaft can flow through the central chamber and enters as secondary air into the channel 15, which is within an annular nozzle 16 for primary air under pressure.
  • the thread is sucked through the entrance 10 and preferably the channels 12a, 12b and 12c will be successively operative.
  • valve 13b of the opening in channel 12b is then opened and a loop of the thread is drawn into this channel 12b.
  • the valve 130 is opened and a loop of the thread is drawn into channel 12c.
  • Thread guide rollers 20a and 201) are positioned in the central chamber 11 in front of the ends of partition walls 19a and 1% respectively between the channels.
  • Parts of the thread from which loops are taken up by the channels run around the guide rollers 20a and 20b.
  • a measured length of the thread is thus taken up by the shaft in shape of three loops and each loop is positioned in a definite channel 12a, 12b or 120.
  • rollers 20a and 20b are displaceably mounted in front of the channels, in such a way that the channels 12a and 12b are closed by the guide rollers 20a and 2012 when the thread, after being severed from the thread supply, is drawn out of the channel 120 by the operation of the blowing device 3. Further the roller 20b is then displaced from the channel 12b to the end of the partition wall 1% and the loop of the thread can be drawn out of the channel 1212 by the operation of the blowing device 3. In the same way the roller 20a is to be displaced from the channel 12a to the partition wall 19a, when the loop is to be removed from channel 12a.
  • the blowing device 3 becomes operative the part a remaining in the mixing tube can not be firstly blown into the shed, if the first loop of the thread is drawn out of the channel 120.
  • This free end of the thread is obtained by the action of a cutting device generally indicated by the reference numeral 21 at the entrance 10. As soon as the free end 0f the thread enters the central chamber 11 this free end will be conveyed to the channel 15 by the action of the secondary air.
  • the guide roller 20b moves from in front of the channel 121) to a position in front of the partition wall 19b, owing to which a loop can be drawn from the channel 12b.
  • roller 20a then moves from the position in front of the channel 12a to a position in front of the partition wall 19a and a loop can be drawn from the channel 12a and is blown into the shaft 4.
  • the shed is now entirely free from loops or stretched thread parts.
  • the leading end of the thread supply which extends through the shaft 8 and between the rollers 6 towards the thread package 7, is held during and after the cutting operation by the cutting device 21.
  • the blowing device 3 becomes inoperative and the shaft 4 is connected to the suction device, a new loop of the thread is sucked into the shaft 4 in such a way that initially a loop is drawn into the channel 12a, whereafter a loop is drawn into the channel 12b and finally a loop is present in the channel 120.
  • the leading end of the thread is then released from the cutting device 21 and enters the central chamber 11.
  • the wefts are arranged in the fabric in a hairpinlike manner, .i.e., both legs of the hairpin-shaped weft are beaten between the warp threads and the intermediate part is adjacent the selvage of the fabric.
  • the weft instead of the hairpin-like arrangement of the weft, it is also possible to introduce the weft singly, i.e., not in the shape of a hairpin; in that case, the thread is straight and has its free ends at the selvages of the fabric.
  • a cutting device is positioned between the shed and the mixing tube 17 and the thread is not cut off by the cutting device 21.
  • the provision of a cutting device between the shed and the blowing device is generally known per se.
  • Timing of the valves 13a, 13b and 130, the rollers 20a and 20b and the blowing device 3 can be effected by means of a cam shaft rotating synchronously with the main drive shaft of the loom, if desired by the interposition of a reduction gear train.
  • This cam shaft has been shown diagramatically in the drawing.
  • Three cams 23a, 23b and 230 of the part 22 of this shaft control the levers 24 of the valves 13a, 13b and respectively.
  • the part 22a of the shaft which has been shown separately, can also be provided with cams for controlling the rollers 20a and 20b.
  • the rollers 20a and 201) can be driven simultaneously or, as has been shown in the drawing, separately, by means of a cam 25a for the roller 20a and a cam 25b for the roller 20b.
  • the shaft portion 22a can be provided with a cam 26 for controlling the blowing device 3 through a lever 27.
  • the device of FIG. 1 can be positioned in the left side frame structure 28a of the loom.
  • a similar device is situated in the right side frame structure 28b.
  • a loom provided with pneumatic weft inserting apparatus comprises in the usual manner a cloth beam 29, a reed 2 and heddles 30 for the warp threads 1.
  • the main shaft 4 is visible in the left side frame structure 28a. Further the thread package 7 the rollers 6 and the auxiliary shaft 8 are visible. Further the blowing device 2b of the weft inserting device arranged in the right side frame structure 28b of the loom is also visible.
  • a device for making up a weft to be used in connection with a loom comprising apparatus for taking up a measured length of thread drawn from a thread package, which apparatus is associated with a blowing device for inserting such measured length of thread from said apparatus into the shed of the loom by jet action, wherein the improvement comprises at least two channels forming part of said apparatus, each of which is in the form of a shaft for receiving a loop constituting a portion of such measured length of thread, each of which has one end debouching into a central chamber that is common to the channels and is connected to the blowing device, and each of which has at its other end an outlet for withdrawal of a stream of air to draw such loop into the channel.
  • a device characterized in that the channels converge towards the central chamber.
  • a device characterized in that the cross section of each channel decreases towards the end that debouches into the central chamber.
  • a device characterized in that the roller system can be moved laterally in front of the channels.
  • a device characterized by a separate entrance for the thread in the side wall of the central chamber.
  • a loom having a device for making up a Weft comprising apparatus for taking up a measured length of thread drawn from a thread package, which apparatus is associated with a blowing device for inserting such "measured length of thread from said apparatus into the ,shed of the loom by jet action, wherein the improvement comprises at least two channels forming part of said apparatus, each of which is in the form of a shaft for receiving a loop constituting a portion of such measured length of thread, each of which has one end debouching into a central chamber that is common to the channels, and is connected to the blowing device, and each of which has at its other end an outlet for withdrawal of a stream of air to dnaw such loop into the channel.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US506067A 1964-11-03 1965-11-02 Device for making up a weft to be used in connection with a loom Expired - Lifetime US3376901A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6412785A NL6412785A (xx) 1964-11-03 1964-11-03

Publications (1)

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US3376901A true US3376901A (en) 1968-04-09

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US506067A Expired - Lifetime US3376901A (en) 1964-11-03 1965-11-02 Device for making up a weft to be used in connection with a loom

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US (1) US3376901A (xx)
BE (1) BE671451A (xx)
CH (1) CH441151A (xx)
DE (1) DE1271646B (xx)
FR (1) FR1563630A (xx)
GB (1) GB1130608A (xx)
NL (1) NL6412785A (xx)
NO (1) NO120024B (xx)
SE (1) SE304961B (xx)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3680600A (en) * 1969-12-19 1972-08-01 Allan W H Porter Process and apparatus for storing weft yarn in looms
US4084623A (en) * 1976-06-17 1978-04-18 Nissan Motor Company, Limited Fluid jet loom with a yarn waste removing apparatus
JPS5593845A (en) * 1978-12-29 1980-07-16 Nissan Motor Weft yarn storing apparatus for shuttleless loom
US4351369A (en) * 1978-12-12 1982-09-28 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Fluid supply apparatus in shuttleless loom
US4637229A (en) * 1985-02-11 1987-01-20 Taylor James W Jr Pneumatic thread tensioning device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2476154A1 (fr) * 1980-02-15 1981-08-21 Moessinger Albert Procede et dispositif pour l'insertion d'un fil de trame dans la foule d'un metier a tisser
CH650811A5 (de) * 1980-12-17 1985-08-15 Saurer Ag Adolph Schussfaden-speichervorrichtung an einer webmaschine.
CS237611B1 (en) * 1983-01-26 1985-09-17 Frantisek Vykydal Pick insertion device on jet loom
GB2136462A (en) * 1983-03-04 1984-09-19 Hollingsworth Yarn handling process and apparatus

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1096283A (en) * 1911-05-24 1914-05-12 John C Brooks Loom.
US3024814A (en) * 1958-12-24 1962-03-13 Strake Lambertus Te Device for collecting a thread, as well as a weaving loom provided with this device
US3110325A (en) * 1961-01-23 1963-11-12 Strake Lambertus Te Pneumatic weft control means
GB954147A (en) * 1959-05-25 1964-04-02 Scheffel Walter Improvements in air jet looms
US3137322A (en) * 1960-02-24 1964-06-16 Strake Lambertus Te Pneumatic loom
US3233634A (en) * 1961-12-08 1966-02-08 Prince Jidosha Kogyo Kabushiki Device for controlling length of weft yarn on fluid jet shuttleless loom
US3237654A (en) * 1966-03-01 Method for
US3250299A (en) * 1962-08-10 1966-05-10 Scheffel Walter Loom with pneumatic picking means

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL95522C (xx) * 1958-12-24
FR1282386A (fr) * 1960-02-24 1962-01-19 Strake Maschf Nv Métier à tisser

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237654A (en) * 1966-03-01 Method for
US1096283A (en) * 1911-05-24 1914-05-12 John C Brooks Loom.
US3024814A (en) * 1958-12-24 1962-03-13 Strake Lambertus Te Device for collecting a thread, as well as a weaving loom provided with this device
GB954147A (en) * 1959-05-25 1964-04-02 Scheffel Walter Improvements in air jet looms
US3137322A (en) * 1960-02-24 1964-06-16 Strake Lambertus Te Pneumatic loom
US3110325A (en) * 1961-01-23 1963-11-12 Strake Lambertus Te Pneumatic weft control means
US3233634A (en) * 1961-12-08 1966-02-08 Prince Jidosha Kogyo Kabushiki Device for controlling length of weft yarn on fluid jet shuttleless loom
US3250299A (en) * 1962-08-10 1966-05-10 Scheffel Walter Loom with pneumatic picking means

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3680600A (en) * 1969-12-19 1972-08-01 Allan W H Porter Process and apparatus for storing weft yarn in looms
US4084623A (en) * 1976-06-17 1978-04-18 Nissan Motor Company, Limited Fluid jet loom with a yarn waste removing apparatus
US4351369A (en) * 1978-12-12 1982-09-28 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Fluid supply apparatus in shuttleless loom
JPS5593845A (en) * 1978-12-29 1980-07-16 Nissan Motor Weft yarn storing apparatus for shuttleless loom
US4637229A (en) * 1985-02-11 1987-01-20 Taylor James W Jr Pneumatic thread tensioning device

Also Published As

Publication number Publication date
SE304961B (xx) 1968-10-07
BE671451A (xx) 1966-02-14
NL6412785A (xx) 1966-05-04
GB1130608A (en) 1968-10-16
DE1271646B (de) 1968-06-27
CH441151A (de) 1967-07-31
NO120024B (xx) 1970-08-10
FR1563630A (xx) 1969-04-18

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