GB748616A - Improvements relating to looms for weaving - Google Patents

Improvements relating to looms for weaving

Info

Publication number
GB748616A
GB748616A GB22441/53A GB2244153A GB748616A GB 748616 A GB748616 A GB 748616A GB 22441/53 A GB22441/53 A GB 22441/53A GB 2244153 A GB2244153 A GB 2244153A GB 748616 A GB748616 A GB 748616A
Authority
GB
United Kingdom
Prior art keywords
weft
spear
selvedge
shed
pin
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
Application number
GB22441/53A
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.)
Weaving Res & Textile Commissi
Original Assignee
Weaving Res & Textile Commissi
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 Weaving Res & Textile Commissi filed Critical Weaving Res & Textile Commissi
Priority to GB22441/53A priority Critical patent/GB748616A/en
Priority to ES0216963A priority patent/ES216963A1/en
Publication of GB748616A publication Critical patent/GB748616A/en
Expired legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms

Abstract

748,616. Shuttieless looms. WEAVING RESEARCH & TEXTILE COMMISSION AGENTS, Ltd., and SHIMWELL, D. W. July 30, 1954 [Aug. 14, 1953; Aug. 14, 1953], Nos. 22441/53 and 22442/53. Class 142 (2). In a loom wherein two weft yarns are carried into the warp shed from opposite sides thereof by reciprocated spears a, b which follow each other closely across the shed, the warp threads are shedded progressively across the loom in the space between the spears so that the two weft yarns are laid in different sheds, and means are provided at each selvedge for cutting the loops of weft so laid. Means are provided for pressing each spear into the fell of the cloth when the spear extends across the cloth to effect beatup. A selvedge pin is provided at each selvedge and is inserted into the double weft pick so that the weft is looped round it; the selvedge pin includes the cutter, which when the pin is lowered into a loop severs the loop. Means may be provided to take up slack in the weft when a spear is moving out of the shed. Shedding.-The head staves are divided longitudinally into sections 15 ... 18 pivoted together, separate cams 20 being provided for raising and lowering the pivots 19 connecting adjacent sections. Weft-inserting.-Two spears a, b are provided, each having a gap c dividing it into upper and lower parts, each of which parts is provided with a weft guiding tube d so that two weft yarns e are laid simultaneously, so that in the simultaneous weaving of two fabrics, one weft yarn is laid in each of two sheds, the gap c positioning the upper warps of the lower shed and the lower warps of the upper shed. Each of the two spears is operated by a chain q attached at an intermediate point to its spear and anchored at its ends u, v; each chain passes around wheels x on a carriage y, the two carriages being reciprocated from a common crank 2 by connecting rods 4, 5 so that the spear moving from the beat-up position moves faster than the spear moving into the shed to widen the distance between the spears so that progressive shedding is facilitated. Forming selvedges.-A selvedge pin 30 having a cutting blade 118 is located at each selvedge and is lowered, when the spear carrying weft yarn from the yarn supply on the opposite side of the shed reaches the end of its stroke, behind the enlarged head f of the spear to engage the weft thread, is then moved with the weft thread thereon to clear the head f as the spear reverses its movement, is moved close to the selvedge and raised to release the loop and is finally moved away from the selvedge for a next cycle of operation. The pin 30 is mounted on a slide 33 carried in a guideway in a member 34 having a forked end straddling the flattened part of a spindle 36. The member 34 has a cam follower 40 engaging a bottom cam 44 to move the member 34 angularly about the spindle 36 and engaging side cams (not shown) to move it at right angles to that angular movement. The slide and pin 30 are raised by a cam 50 engaging a follower 49 on an arm 48 supporting a roller 51 on the slide, and are returned by springs 52. When loops around the pin 30 are to be cut, a lever 120 is moved from under a projection 119 on the slide 33 to allow the pin to be drawn further downwards sharply by the springs 52 so that the blade 118 cuts the loops. The selvedges may be as shown in Fig. 14, lengths of weft 114, 115 corresponding to a double pick being cut; the cut end at one end of each length is folded over before it is inserted into the shed. Alternatively singlepick lengths are inserted, the initial end of each such length being folded over to embrace the end of the previous pick.
GB22441/53A 1953-08-14 1953-08-14 Improvements relating to looms for weaving Expired GB748616A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB22441/53A GB748616A (en) 1953-08-14 1953-08-14 Improvements relating to looms for weaving
ES0216963A ES216963A1 (en) 1953-08-14 1954-08-13 Improvements relating to looms for weaving

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB22441/53A GB748616A (en) 1953-08-14 1953-08-14 Improvements relating to looms for weaving

Publications (1)

Publication Number Publication Date
GB748616A true GB748616A (en) 1956-05-09

Family

ID=10179414

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22441/53A Expired GB748616A (en) 1953-08-14 1953-08-14 Improvements relating to looms for weaving

Country Status (2)

Country Link
ES (1) ES216963A1 (en)
GB (1) GB748616A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1218965B (en) * 1959-06-26 1966-06-08 Sulzer Ag Process for slacking off weft material in weaving machines and device for carrying out the process
DE1233790B (en) * 1957-08-05 1967-02-02 Dobbie Ind Ltd Loom
DE1238407B (en) * 1957-06-03 1967-04-06 Seydoux Et Michau Reunis Ets Weaving machine with removal of the weft thread from stationary supply bobbins by weft carriers designed as grippers
CZ309066B6 (en) * 2011-11-21 2022-01-12 Czechoslovak Development, Družstvo Shed cam equipment for high-speed weaving machines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1238407B (en) * 1957-06-03 1967-04-06 Seydoux Et Michau Reunis Ets Weaving machine with removal of the weft thread from stationary supply bobbins by weft carriers designed as grippers
DE1233790B (en) * 1957-08-05 1967-02-02 Dobbie Ind Ltd Loom
DE1218965B (en) * 1959-06-26 1966-06-08 Sulzer Ag Process for slacking off weft material in weaving machines and device for carrying out the process
CZ309066B6 (en) * 2011-11-21 2022-01-12 Czechoslovak Development, Družstvo Shed cam equipment for high-speed weaving machines

Also Published As

Publication number Publication date
ES216963A1 (en) 1955-12-01

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