US3831640A - Pneumatic loom - Google Patents

Pneumatic loom Download PDF

Info

Publication number
US3831640A
US3831640A US00274687A US27468772A US3831640A US 3831640 A US3831640 A US 3831640A US 00274687 A US00274687 A US 00274687A US 27468772 A US27468772 A US 27468772A US 3831640 A US3831640 A US 3831640A
Authority
US
United States
Prior art keywords
projectile
chamber
partition
filling
loom
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
US00274687A
Other languages
English (en)
Inventor
K Wueger
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.)
Crompton and Knowles Corp
Original Assignee
Crompton and Knowles Corp
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 Crompton and Knowles Corp filed Critical Crompton and Knowles Corp
Priority to US00274687A priority Critical patent/US3831640A/en
Priority to CA168,634A priority patent/CA978061A/en
Priority to ZA740512A priority patent/ZA74512B/xx
Priority to ZA740511A priority patent/ZA74511B/xx
Priority to ZA732428A priority patent/ZA732428B/xx
Priority to SE7305577A priority patent/SE414795B/sv
Priority to IT49845/73A priority patent/IT988171B/it
Priority to IN1129/CAL/73A priority patent/IN139863B/en
Priority to AU55845/73A priority patent/AU475317B2/en
Priority to BE132186A priority patent/BE800814A/xx
Priority to FR7323399A priority patent/FR2193897B1/fr
Priority to GB3024473A priority patent/GB1441151A/en
Priority to GB3036973A priority patent/GB1441153A/en
Priority to GB3034673A priority patent/GB1441152A/en
Priority to NL7309850A priority patent/NL7309850A/xx
Priority to AT629673A priority patent/AT327119B/de
Priority to CS735134A priority patent/CS209408B2/cs
Priority to BR5342/73A priority patent/BR7305342D0/pt
Priority to AT629573A priority patent/AT326058B/de
Priority to AT629773A priority patent/AT332319B/de
Priority to DD172451A priority patent/DD105265A5/xx
Priority to SU731949708A priority patent/SU650515A3/ru
Priority to SU1949709A priority patent/SU515468A3/ru
Priority to DE2337785A priority patent/DE2337785C2/de
Priority to DE2337786A priority patent/DE2337786C2/de
Priority to DD172450A priority patent/DD105264A5/xx
Priority to DE2337787A priority patent/DE2337787C2/de
Priority to DD172431A priority patent/DD105263A5/xx
Priority to SU731949710A priority patent/SU664573A3/ru
Priority to CH1079473A priority patent/CH559790A5/xx
Priority to JP48082784A priority patent/JPS5940933B2/ja
Priority to CH1079273A priority patent/CH560264A5/xx
Priority to AR249246A priority patent/AR197516A1/es
Priority to CH1079373A priority patent/CH558436A/de
Priority to AR249248A priority patent/AR203270A1/es
Priority to US452491A priority patent/US3902530A/en
Application granted granted Critical
Publication of US3831640A publication Critical patent/US3831640A/en
Priority to CA223,402A priority patent/CA988007A/en
Priority to CA223,401A priority patent/CA982026A/en
Priority to AT621875A priority patent/AT340333B/de
Priority to IN1670/CAL/75A priority patent/IN139864B/en
Priority to IN1671/CAL/75A priority patent/IN139865B/en
Priority to FR7612363A priority patent/FR2296714A1/fr
Priority to FR7612362A priority patent/FR2296715A1/fr
Priority to SE7702134A priority patent/SE414794B/xx
Priority to SE7702135A priority patent/SE434523B/xx
Priority to CS781238A priority patent/CS209409B2/cs
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
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/24—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick by gripper or dummy shuttle
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/24—Mechanisms for inserting shuttle in shed
    • D03D49/42—Mechanisms for inserting shuttle in shed whereby the shuttle is propelled by liquid or gas pressure
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/24—Mechanisms for inserting shuttle in shed
    • D03D49/50—Miscellaneous devices or arrangements concerning insertion of weft and not otherwise provided for
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/52—Shuttle boxes
    • D03D49/54—Braking means; Swells
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J5/00—Shuttles
    • D03J5/06—Dummy shuttles; Gripper shuttles

Definitions

  • This invention relates generally to pneumatic filling insertion in a loom wherein the filling is supplied from supply packages located outside of the loom.
  • Pneumatic looms in the past have consisted of several types; in one type, the filling is blown through the shed.
  • One disadvantage of this type is that the width of cloth which can be woven is limited due to a drop in flow velocity and turbulence of the air stream used to propel the filling. Air turbulence also causes the filling to untwist so that only certain types of filling can be used.
  • Still another disadvantage of this type of pneumatic loom is that proper filling tension is difficult to maintain. The only forces acting on the filling is that of the air stream itself.
  • Another type of pneumatic loom utilizes a full size bobbin carrying shuttle which is propelled by a blast of air.
  • the disadvantage of this type of pneumatic filling insertion is that the power consumption to propel the shuttle makes the weaving operation impractical.
  • Still another type pneumatically inserts a length of yarn in a hollow shuttle and propels the shuttle mechanically. Enough yarn is stored for several filling picks. The size of the projectile is still a disadvantage for attaining high speeds and it is a problem to draw out the filling yarn evenly and under uniform tension.
  • More recent pneumatic looms have utilized a smaller shuttle, more accurately referred to as a projectile, to carry the free end of the filling through the warp shed.
  • the filling end is either clamped within the projectile as shown for example in my U.S. Pat. No. 3,4l2,763 or blown through a bore in the projectile so that the filling extends around the forward end of the projectile during flight as shown in my U.S. Pat. No. 3,395,737.
  • This type of pneumatic weft insertion greater speeds may be obtained, there is a better control of the filling and power consumption is minimized.
  • the present invention represents an improvement over my two US. patents mentioned above wherein there is a more accurate control of the filling length, a more controlled flight of the projectile and improved checking of the projectile at the end of its flight.
  • a novel projectile is which a portion of a filling pick in pneumatically inserted, novel projectile guiding means and novel projectile launching and receiving device within which the projectile is charged with the portion of a filling pick and propelled.
  • This device is also adapted to receive a projectile fired from the opposite side of the loom and also contains pneumatic devices including valves to pneumatically propel the filling behind the projectile during its flight. Means are also provided for cutting and clamping the filling after each pick.
  • FIG. 1 is a plan view of a loom incorporating the present invention
  • FIG. 2 is an enlarged plan view of a projectile launching and receiving device
  • FIG. 3 is a longitudinal section along line 33 of FIG. 2 and looking in the direction of the arrows on a further enlarged scale;
  • FIG. 4 is an enlarged vertical section taken along line d-4 of FIG. 3 and illustrating one of the valve units for filling insertion;
  • FIG. 5 is an enlarged vertical section taken along line 5-5 of FIG. 3 and illustrating the valve unit for operating the pneumatic projectile braking means;
  • FIG. 6 is an enlarged end view looking in the direction of arrow 6 of FIG. 3 of one of the projectile braking units with portions broken away;
  • FIG. 7 is a sectional view along line 7-7 of FIG. 6;
  • FIG. 8 is a sectional view taken along line 8--8 of FIG. 3, illustrating a poppet valve
  • FIG. 9 is an elevation looking in the direction of arrow 9 of FIG. 2, illustrating the filling clamping means
  • FIG. 10 is a section taken along line ll0l0 of FIG. ll, looking in the direction of the arrows and illustrating a combined projectile guide and beat-up unit;
  • FIG. I! is a vertical section taken along line ill-11 of FIG. 10, looking in the direction of the arrows, showing several projectile guides and beat-up units and the projectile;
  • FIG. 12 is a longitudinal section of the projectile
  • FIG. 13 is a vertical section taken along line 13-13 of FIG. 12 and looking in the direction of the arrows;
  • FIGS. 14 19 are diagrammatic operational views
  • FIG. 20 is a view of a modified projectile guide and beatup unit
  • FIG. 21 is an end view with portions in section, showing the lay driving mechanism.
  • FIG. 22 is a view similar to FIG. 21, showing a modification in the lay driving mechanism to accommodate the modified guide and beat-up unit of FIG. 20.
  • FIG. 1 there is shown a loom generally indicated by the reference numeral 20 to which the filling inserting mechanism of the present invention is applied.
  • Loom 20 includes the usual frame members 22, letoff beam 24, takeup roll 26 and heddle frames 28 which are operated by a shedding mechanism, not shown, of a usual type such as a dobby.
  • a lay L supports conventional yarn cutting and clamping units 29 as shown, for example, in U.S. Pat. No. 3,598, 1 53, located to the 0utside of selvages S.
  • the projectile for guiding the filling through the warp shed is generally indicated by the reference numeral 30, see particularly FIGS. I2 and I3.
  • Projectile 30 is generally cylindrical with substantially flat end surfaces 32 which are at right angles to the longitudinal axis x of the projectile. These end surfaces may even be concave but it is more important that they not be convex to any substantial degree. The reason for this is discussed in more detail in the section entitled PROJEC- TILE GUIDING MEANS.
  • the central portion of the projectile is generally hollow. This hollow area is divided into two annular chambers M by a spherical partition an. Each chamber 34 has a vortex shaped portion 3% which leads to an opening MI in its respective end 3.2.
  • Partition as has a plurality of slots d2 which extend between chambers 3d and are each disposed at an angle to axis x.
  • the function of the slots 42 is to allow air to pass from one chamber to the other and to create a circular air flow within the chambers 34 when air is blown into one of the openings 40.
  • Portion 38 of the chamber 34 converts this circular air flow into a vortex so that if the free end of a filling is placed in the opening 40 through which air is being blown, it will be drawn therethrough and deposited in the corresponding chamber 34 in loose spinal coils.
  • the mechanism for presenting filling to the openings 40 and blowing air thereinto will be described in the next section.
  • PROJECTILE LAUNCHING AND RECEIVING DEVICE there is situated at each end of the loom, right and left hand projectile launching and receiving means generally indicated by the reference numerals 44 and 44, respectively. Only one of these devices will be described in detail, namely 44, since both devices are identical. Comparable portions of device 44' will bear the same reference numerals as for device 44 with the addition of a prime.
  • the devices 44 and 44 are enclosed in covers 46 and 46', respectively, but device 44 and the valve control means therefor, indicate generally at 48, are shown in FIG. 2 on an enlarged scale with the top cover removed.
  • device 44 comprises a housing 50 which has a projectile receiving bore 52, a firing chamber 54 which is pneumatically connected to the bore 52, and a nozzle 56 which extends through chamber 54, into bore 52.
  • a passage 58 pneumatically connects nozzle 56 to the outside through the opposite end of the housing.
  • a yieldable bumper 60 is located adjacent bore 52 and forms part of chamber 54.
  • Bumper 60 is made of a resilient material such as rubber and has a series of annular grooves 62 to increase its yieldability in a direction along the longitudinal axis of the chamber 54.
  • Each unit 64 includes a housing 66 having an annular inner wall 68, an annular groove '70 in wall 68 and an aperture 72 which extends from the outside of the housing 66 into groove 70.
  • An annular resilient liner 74 is positioned against inner wall 68 so that groove 70 is completely enclosed except for aperture 72.
  • Liner 74 has a pair of inner grooves 76 for mounting on a pair of flanges '78.
  • Each segment 79 includes a pair of end portions 80 which are slidably mounted in radial slot 82 near the ends of housing 66.
  • Each segment 79 has an intermediate portion 84 which extends between end portions 80 and lies against liner '74.
  • each end portion 80 has a shoulder 86 which extends into an annular groove 87 and engages a shoulder 88 to limit the inward motion of the segment.
  • Segments 79 are made of a material suitable for braking purposes and are effective, upon pressurization of groove 70, to engage the projectile when it is in the bore 52.
  • Braking units 64 are effective to decelerate a projectile propelled from the opposite side of the loom almost to the point of stopping it.
  • the bumper 60 acts as the final stopping element for the projectile. This is to insure that the projectile will be positioned against the bumper each time it enters bore 52 so that nozzle 56 will be inserted into opening 40.
  • Pressurized air is supplied to the braking units 64 from a high pressure source such as a pressure tank 90 indicated in FIG. 1. Pressurized air from tank 90 is supplied through supply line 92 to a diaphram valve 94. When valve 94 is in the closed condition, pressurized air will be supplied to a port 96 adjacent the valve. Port 96 pneumatically connects the apertures 72 of each brake unit 64 through a conduit 98 in the housing.
  • valve 94 is shown in the closed" position wherein units 64 are in the braking condition.
  • Valve 94 has a supply port 99 which is pneumatically connected to port 96. Pressurized air from source 90 is supply to port 99 by a conduit 100 to maintain units 64 in the braking condition.
  • An annular discharge chamber 102 surrounds port 99 and is pneumatically connected to the atmosphere by a conduit 104. Pressurized air from source 90 is also supplied to a stabilizing chamber 106 by conduit 108 and passageway 109. Chamber 106 is separated from port 99 by a diaphram 110.
  • Valve 94 has a bore 112 which is pneumatically connected to conduit 108 through an annular slot 114.
  • a hollow slider 116 is slidably mounted within bore 112 and is effective to seal slot 114 from bore 112, at least when it is in the position shown in FIG. 5.
  • Slider 116 has a slot 118 which extends from the outside of the slider to the open interior thereof.
  • valves I22 and 124 have larger supply ports indicated at 126 and 128, respectively which taper toward their respective diaphrams 134 and 136.
  • pressurized air is supplied to annular discharge chambers 121 and 123 respectively from conduits 125, one of which is shown in FIG. 4 and not to ports 126 and 128.
  • Valves 122 and 124 have sliders 130 and 132, respectively, which are effective to allow pressurized air in discharge chambers I21 and 124, respectively, to deflect diaphrams I34 and I36, respectively.
  • a filling extending from a supply package, not shown, into passage 58 and through nozzle 56 is propelled through bore 52 and into the warp shed.
  • Valve 146 Located on the opposite side of housing 56 from valve 124 is a poppet valve 116 which is connected to a low pressure source such as tank 1 18 through a supply line 151), see FIG. 1.
  • Valve 146 includes a chamber 152 which communicates with a channel 154 in housing 511 by means of a plurality of apertures 156 which are arranged in a circle as shown in FIG. 8. Channel 1 is pneumatically connected to jets 14 1.
  • Valve 146 also includes a free floating poppet or fiat disc 158 which has an annular edge 160 which tapers inwardly toward apertures 156. Pressure in the chamber 152 maintains poppet 158 against apertures 156 but the lower surface of the poppet is not large enough to cover the apertures entirely.
  • Pressurized air from supply line 151) is allowed to enter channel 154 throughvalve 146 and be directed into passage 58 from jets 1441.
  • the purpose of valve 146 is to direct a low pressure air flow through channel 58 and nozzle 56 so that a filling yarn disposed therein will be deposited into a projectile when it is in bore 52. Nozzle 56 will extend into opening 41) of a fully positioned projectile and the filling will be deposited in the projectile in the manner set forth in the previous section describing the projectile.
  • the high pressure air from valve 124 will enter channel 154.
  • the valve control means 48 comprise a carriage 163 slidably supported in a frame 166.
  • Sliders 116, 130 and 132 extend through their respected diaphram valves as described and are supported by the carriage 163.
  • Carriage 163 is reciprocated in the directions of arrows 166 by a constant diameter cam" 168 which bears against a pair of followers 176 operatively attached to the carriage 163.
  • Cam 168 is driven from the main drive shaft 169, see FIG. 21, in timed relation with other loom components.
  • Sliders 116, 1311 and 132 are moved simultaneously by cam 168.
  • the sliders are adjustably mounted on carriage 163 by set screws or the like 172 so that the se quence of operation of their respective valves may be adjusted as desired.
  • a track cam 176 is also driven from the main shaft and is effective through a follower 176 and the linkage 178, to operate a yarn takeup lever 181].
  • the filling yarn, indicated at Y extends from housing 511 and is threaded through a pair of stationary guides 182., through a tension clamp 18d and back to the supply cone 186. Filling Y is also threaded through takeup lever which extends between guides 182.
  • cam 174 willl be effective to pull lever 180 in the direction of arrow 188 to takeup a section of filling yarn for a purpose to be described.
  • Each clamp 184 comprises a pair of fiat discs 190 supported on one arm of a bellcrank lever 192.
  • the other arm of lever 192 supports a cam follower 194 which bears against a face cam 196 driven in timed relation with other loom components.
  • a spring 198 maintains follower 9 1 against cam surface 201) of cam 196.
  • a compression spring 202 bears against flat discs 191) to maintain tension against filling yarn Y which extends between the discs.
  • PROJECT ILE GUIDE AND BEAT-UP MEANS Referring to FIGS. 1, 10, and 11, the projectile guide and beat-up means is indicated generally at 205 and comprise a plurality of spaced individual guides or plates 206 which are fastened to the lay L and supported on rod 208 which extends through holes '210 in the plates.
  • Each guide 206 has a circular aperture 212 which has a slightly larger diameter than the projectile 30 as illustrated in FIG. 11.
  • a slot 214 ext-ends forwardly from aperture 212 to the outside thereof.
  • the apertures 212 of guides 206 collectively form a guide channel for the projectile.
  • This guide channel is shown in FIG. 11 and indicated by the reference numeral 216.
  • the various loom components are so timed and the guides 206 are so positioned on the lay that apertures 212 will be within the shed opening at the time the projectile is propelled.
  • the shed opening is indicated by dot and dash lines 219.
  • Guides 206 and projectile 311 are so constructed that they cooperate to create an aerodynamic effect which enables the projectile to be propelled through channel 216 in a stabilized and suspended state.
  • the projectile is propelled at a subsonic velocity above 90 F .P.S.
  • the actual projectile speed will depend on the width of the loom, weaving speed and other practical considerations.
  • This projectile velocity is sufficiently high so that as the projectile travels through channel 216, there is a pressure zone or a build-up of pressure in front of the flat leading surface 32.
  • This air in front of the projectile is at super-atmospheric pressure and escapes into spaces 22-22 between guides 2116 in the direction of arrow 224.
  • End surfaces 32 intersect the circumferential surface 226 of the projectile to form substantially sharp annular edges 228.
  • Guides 206 have inner annular surfaces 230 which are parallel to the longitudinal axis 233 of the channel 216 and form sharp annular edges 232 with the flat surfaces 234 of the guides 206.
  • the leading edge 228 of projectile 30 is located between edges 232 along the longitudinal axis 233 of channel 216, air can escape into spaces 222 generally in the direction of arrow 224.
  • the leading edge 228 is aligned with the leading edge 232 of one of the guides 206, the flow of air is restricted and there is an instant change in the direction of air flow in the direction of arrow 235. This flow gradually changes to the direction of arrow 224 until edge 228 becomes aligned with the leading edge 232 of the next guide.
  • This relationship between the moving projectile and the guides creates a pulsating air flow around the edge 228 of the projectile which stablizes the front end of the projectile and maintains it in a central position in channel 216 throughout its flight through the warp shed.
  • the end surfaces 32 need not be absoultely fiat as shown but may be concave or slightly convex near the center as long as the surface is effective to create a pressure Zone in front of the projectile and forms a substantially sharp edge where it intersects surface 226.
  • the trailing end of the projectile 32 is also stabilized because of the partial vacuum and backflow created behind the projectile. This is a well-known phenomena in aerodynamics of a moving body. This effect comsures created along the circumferential surface 226.
  • Air returning through spaces 222 causes a dynamic pressure build-up of air all along surface 226.
  • Ther is also a boundary layer of turbulent air along surface 226 which flows in the same direction as the projectile but relative to the projectile in the direction of arrow 239.
  • This boundary layer is reinforced by air escaping from the pressure zone in front of the projectile through the space between the projectile and channel 216.
  • the pressure build-up from air flowing through spaces 222 together with the boundary layer are effective to support the projectile within channel 216 away from inner surfaces 230 of guides 206.
  • the above aerodynamic effects depend on many variables. Any change in one variable necessitates a change in the other.
  • the variables are the size and weight of the projectile, the size of channel 216 or clearance between the projectile and surfaces 230, the thickness of each guide 206; the distance between guides 206 and the velocity of the projectile.
  • An example of one combination of variables which will produce the above aerodynamic effects is as follows:
  • FIG. 20 there is shown a modified guide 206' which is fastened on lay L and supported by rod 208'.
  • Guide 206 has a circular aperture 212 and a slot 214 which extends from aperture 212' to the outside thereof.
  • Aperture 212' forms part of a guide channel 216 for the projectile in the same manner as aperture 212.
  • the rearward edge 238 of slot 214 is formed by an upwardly extending portion 240.
  • the lay L which supports the projectile guide and beatup means 205 is pivoted at 244.
  • the lower part of lay L is bifurcated into two extending arms 246 and 248.
  • Followers 250 and 252 are attached to arms 246 and 248, respectively and are engaged by a pair of conjugate cams 254 and 256, respectively.
  • the cams are designed to reciprocate the lay between the full and dotted line positions and to provide a substantial dwell in the back position shown in full lines.
  • the lay remains in the back position during filling insertion.
  • slots 214 of the guides 206 allow the fell 258 of the fabric F to enter openings 212 and allows rear surfaces 218 to beat-up the inserted filling.
  • FIG. 22 there is shown a modified lay drive similar to that shown in FIG. 21 but modified to accommodate modified guides 206'.
  • the lay in this modification is indicated at L.
  • Lay L is pivoted closer to the fell than lay L at 260.
  • the power to drive the lay L' comes from the pair of conjugate cams 254' and 256 which engage a pair of followers 252 and 250 located on a pair of arms 246' and 248, respectively.
  • Arms 246' and 248 extend from a lever 262 pivoted at 264.
  • Lever 262 is reciprocated in the direction of arrows 266 by the cams. This motion is transmitted through a link 267 to a lever 268 which is fixed to pivot 260 and extends below pivot 260.
  • Link 267 is pivotally attached to levers 262 and 268 at points 270 and 272, respectively.
  • Guides 206' are mounted on the top of lay L so that openings 212' are within shed 219 and drops below the fell 258 at the front position.
  • the short lay pivot at 260 enables the guides 206' to drop very quickly. As the lay moves toward the front position, the filling is cammed up along rearward edge 238 and is beaten into the fell 258' by the rearwardly extending portion 240.
  • FIGS. 14 19 a filling inserting cycle is diagrammatically illustrated.
  • Takeup lever 180 is then moved from the retracted position and the tension on clamp 184' is eased to allow yarn to be blown into the left-hand chamber 3d of projectile 30 in loose spiral coils indicated at 276, see FIG. 15. This is accomplished through poppet valve 146 and the low pressure air system as previously described.
  • valves associated with projectile launching and receiving means 44' are operated so that after a portion of a filling pick is inserted in one of the chambers 34 of the projectile as shown in FIG. 15, the brakes 64' are released. The projectile is then propelled and the filling from supply package 186 is aerodynamically propelled behind the projectile as shown in FIG. 16.
  • the loom is timed so that when the projectile reaches a certain point in its flight through the warp shed, clamp 184' is actuated to clamp the filling.
  • the projectile continues its flight but the coiled portion 276 of the filling unwinds as shown in FIG. 17. If the clamp 18$ is actuated at the proper time, the leading end of por tion 276 will be dropped at point 273 where the previous filling pick 275 was cut as shown in FIG. 18.
  • the brakes 64 are actuated to stop the projectile.
  • the yarn which has thus been inserted is cut at point 278 to become the next filling pick, indicated at 280 in FIG. i8.
  • yarn takeup lever 180' is retracted and the cut end of the yarn extending from package 186' is pulled back to the mouth of nozzle 56' as shown in FIG. 19.
  • Projectile launching and receiving means 44' is now in condition to again receive projectile 30 from 44.
  • Another filling pick will be inserted from package 186 when projectile 30 is propelled from 44 to 44 in the same sequence of operation as previously described for the flight of the projectile from 44' to 44.
  • a projectile for use in a loom in which filling picks are inserted from an outside supply source comprising:
  • a cylinder having a peripheral surface extending parallel to its longitudinal axis, an annular edge at at least one end of said cylinder coincident with said peripheral surface and lying in a piane which intersects said longitudinal axis at a right angle;
  • each end of the cylinder has an annular edge and an end surface as set forth therein.
  • a projectile for use in a 1.00m in which filling picks are inserted from an outside supply source comprising:
  • a body having a chamber which is circular in cross section and a passageway which connects said chamber to the outside of said body, said chamber having a first portion, a second portion with a larger diameter than said first portion and a third, tapered portion connecting said first and second portions;

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
US00274687A 1972-07-24 1972-07-24 Pneumatic loom Expired - Lifetime US3831640A (en)

Priority Applications (46)

Application Number Priority Date Filing Date Title
US00274687A US3831640A (en) 1972-07-24 1972-07-24 Pneumatic loom
CA168,634A CA978061A (en) 1972-07-24 1973-04-09 Pneumatic loom
ZA740512A ZA74512B (en) 1972-07-24 1973-04-09 Improvement for a pneumatic loom
ZA740511A ZA74511B (en) 1972-07-24 1973-04-09 Improvement for a pneumatic loom
ZA732428A ZA732428B (en) 1972-07-24 1973-04-09 Improvement for a pneumatic loom
SE7305577A SE414795B (sv) 1972-07-24 1973-04-18 Griparskyttel
IT49845/73A IT988171B (it) 1972-07-24 1973-05-08 Perfezionamento nei telai tessili
IN1129/CAL/73A IN139863B (de) 1972-07-24 1973-05-14
AU55845/73A AU475317B2 (en) 1972-07-24 1973-05-17 Improvement fora pneumatic loom
BE132186A BE800814A (fr) 1972-07-24 1973-06-12 Perfectionnements aux metiers a tisser pneumatiques
FR7323399A FR2193897B1 (de) 1972-07-24 1973-06-21
GB3024473A GB1441151A (en) 1972-07-24 1973-06-26 Pneumatic loom
GB3036973A GB1441153A (en) 1972-07-24 1973-06-26 Pneumatic loom
GB3034673A GB1441152A (en) 1972-07-24 1973-06-26 Pneumatic loom
NL7309850A NL7309850A (de) 1972-07-24 1973-07-16
AT629673A AT327119B (de) 1972-07-24 1973-07-17 Schutzen fur einen pneumatischen webstuhl
CS735134A CS209408B2 (en) 1972-07-24 1973-07-17 Pneumatic device for loading the weft
BR5342/73A BR7305342D0 (pt) 1972-07-24 1973-07-17 Projetil aperfeicoado para uso em teares dispositivo para lancar e receber o projetil textil e aperfeicoamentos em tear
AT629573A AT326058B (de) 1972-07-24 1973-07-17 Abschuss- und aufnahmevorrichtung für den schützen von webmaschinen
AT629773A AT332319B (de) 1972-07-24 1973-07-17 Schutzen fur einen pneumatischen webstuhl
DD172451A DD105265A5 (de) 1972-07-24 1973-07-23
SU731949708A SU650515A3 (ru) 1972-07-24 1973-07-23 Пневматический ткацкий станок
SU1949709A SU515468A3 (ru) 1972-07-24 1973-07-23 Прокладчик утка к пневматическому ткацкому станку
DE2337785A DE2337785C2 (de) 1972-07-24 1973-07-23 Pneumatischer Schußfadeneintragvorrichtung für eine Düsenwebmaschine
DE2337786A DE2337786C2 (de) 1972-07-24 1973-07-23 Abschuß- und Aufnahmevorrichtung für das Projektil einer pneumatischen Webmaschine
DD172450A DD105264A5 (de) 1972-07-24 1973-07-23
DE2337787A DE2337787C2 (de) 1972-07-24 1973-07-23 Projektil für eine pneumatische Webmaschine
DD172431A DD105263A5 (de) 1972-07-24 1973-07-23
SU731949710A SU664573A3 (ru) 1972-07-24 1973-07-23 Устройство дл прокладывани уточной нити на пневматическом ткацком станке
CH1079473A CH559790A5 (de) 1972-07-24 1973-07-24
JP48082784A JPS5940933B2 (ja) 1972-07-24 1973-07-24 織機、織機に使用する射出体および射出体発射・収容装置
CH1079273A CH560264A5 (de) 1972-07-24 1973-07-24
AR249246A AR197516A1 (es) 1972-07-24 1973-07-24 Proyectil para emplear en un telar del tipo donde se insertan pasadas de relleno desde una fuente de suministro exterior
CH1079373A CH558436A (de) 1972-07-24 1973-07-24 Abschuss- und aufnahmevorrichtung fuer das projektil einer pneumatischen duesenwebmaschine.
AR249248A AR203270A1 (es) 1972-07-24 1973-07-24 Telar mejorado
US452491A US3902530A (en) 1972-07-24 1974-03-18 Projectile picking means for a pneumatic loom
CA223,402A CA988007A (en) 1972-07-24 1975-03-25 Pneumatic weft inserting means for a loom
CA223,401A CA982026A (en) 1972-07-24 1975-03-25 Weft inserting mechanism for a pneumatic loom
AT621875A AT340333B (de) 1972-07-24 1975-08-11 Schutzenfuhrung fur webstuhle mit pneumatischem schutzenschlag
IN1670/CAL/75A IN139864B (de) 1972-07-24 1975-08-29
IN1671/CAL/75A IN139865B (de) 1972-07-24 1975-08-29
FR7612363A FR2296714A1 (fr) 1972-07-24 1976-04-26 Perfectionnements aux metiers a tisser pneumatiques
FR7612362A FR2296715A1 (fr) 1972-07-24 1976-04-26 Perfectionnements aux metiers a tisser pneumatiques
SE7702134A SE414794B (sv) 1972-07-24 1977-02-25 Utkastnings- och mottagningsanordning for en skyttel
SE7702135A SE434523B (sv) 1972-07-24 1977-02-25 Pneumatisk mekanism vid vevstol for inforing av inslagstrad
CS781238A CS209409B2 (cs) 1972-07-24 1978-02-27 Zařízení pro vymršťování a zachycování útkového zanášeče

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00274687A US3831640A (en) 1972-07-24 1972-07-24 Pneumatic loom

Publications (1)

Publication Number Publication Date
US3831640A true US3831640A (en) 1974-08-27

Family

ID=23049210

Family Applications (1)

Application Number Title Priority Date Filing Date
US00274687A Expired - Lifetime US3831640A (en) 1972-07-24 1972-07-24 Pneumatic loom

Country Status (20)

Country Link
US (1) US3831640A (de)
JP (1) JPS5940933B2 (de)
AR (2) AR203270A1 (de)
AT (3) AT327119B (de)
AU (1) AU475317B2 (de)
BE (1) BE800814A (de)
BR (1) BR7305342D0 (de)
CA (1) CA978061A (de)
CH (3) CH560264A5 (de)
CS (1) CS209408B2 (de)
DD (3) DD105263A5 (de)
DE (3) DE2337786C2 (de)
FR (3) FR2193897B1 (de)
GB (3) GB1441152A (de)
IN (1) IN139863B (de)
IT (1) IT988171B (de)
NL (1) NL7309850A (de)
SE (3) SE414795B (de)
SU (3) SU515468A3 (de)
ZA (3) ZA74512B (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4095620A (en) * 1977-09-28 1978-06-20 Crompton & Knowles Corporation Projectile for weft insertion
US4187887A (en) * 1978-11-13 1980-02-12 Crompton & Knowles Corporation Loom projectile
US4190089A (en) * 1979-01-11 1980-02-26 Crompton & Knowles Corporation Projectile launching apparatus
US4207926A (en) * 1979-03-12 1980-06-17 Crompton & Knowles Corporation Loom projectile
FR2588283A1 (fr) * 1985-10-08 1987-04-10 Klimovsk Sp K B Proekt Tkats Peigne pour metier a tisser
US5664609A (en) * 1995-05-12 1997-09-09 Lindauer Dornier Gesellschaft Mbh Weaving reed and gripper guide element for a loom
US6021820A (en) * 1996-10-02 2000-02-08 Texo A.B. Weaving device with practile fluid handling
US6158479A (en) * 1998-03-24 2000-12-12 Texo Ab Arrangement for shooting and accelerating a shuttle in a weaving machine
WO2005026425A1 (de) * 2003-08-28 2005-03-24 Lindauer Dornier Gesellschaft Mbh Einrichtung an einer düsenwebmaschine zum eintragen des schussfadens und kartusche zum einsetzen in das mischrohr der hauptblasdüse einer düsenwebmaschine
NL1026238C2 (nl) * 2004-05-19 2005-11-22 Te Strake Textile B V Drager voor het inbrengen van een inslagdraad in het inslagvak van een weefinrichting.
WO2006046856A1 (en) * 2004-10-29 2006-05-04 Te Strake Textile B.V. Weaving device
WO2007039244A2 (de) * 2005-10-01 2007-04-12 Sultex Ag Verfahren zur abstützung eines schussfadenführungselements
US20070169831A1 (en) * 2003-07-17 2007-07-26 Te Strake Textile B.V. Weaving device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1777329A1 (de) * 2005-10-01 2007-04-25 Markus Farner Projektil-Webmaschine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1076586B (de) * 1954-06-16 1960-02-25 Forsch Textiltechnologie Im Be Schusseintragvorrichtung fuer Greiferschuetzenwebmaschinen
GB1098802A (en) * 1965-01-22 1968-01-10 Zangs Ag Maschf Loom
US3404708A (en) * 1967-09-13 1968-10-08 Crompton & Knowles Corp Projectile for guiding and tensioning filling yarn

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB756653A (en) * 1954-09-29 1956-09-05 Sulzer Ag Weaving looms
US3412763A (en) * 1966-06-07 1968-11-26 Crompton & Knowles Corp Pneumatic loom
US3395737A (en) * 1966-06-07 1968-08-06 Crompton & Knowles Corp Pneumatic filling inserter
US3598158A (en) * 1969-11-10 1971-08-10 Crompton & Knowles Corp Yarn clamping and cutting device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1076586B (de) * 1954-06-16 1960-02-25 Forsch Textiltechnologie Im Be Schusseintragvorrichtung fuer Greiferschuetzenwebmaschinen
GB1098802A (en) * 1965-01-22 1968-01-10 Zangs Ag Maschf Loom
US3404708A (en) * 1967-09-13 1968-10-08 Crompton & Knowles Corp Projectile for guiding and tensioning filling yarn

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4095620A (en) * 1977-09-28 1978-06-20 Crompton & Knowles Corporation Projectile for weft insertion
DE2837829A1 (de) * 1977-09-28 1979-04-05 Crompton & Knowles Corp Als flugkoerper ausgebildetes schussfadeneintragorgan fuer webstuehle
US4187887A (en) * 1978-11-13 1980-02-12 Crompton & Knowles Corporation Loom projectile
EP0011431A1 (de) * 1978-11-13 1980-05-28 CROMPTON & KNOWLES CORPORATION Webschützen
US4190089A (en) * 1979-01-11 1980-02-26 Crompton & Knowles Corporation Projectile launching apparatus
EP0013821A1 (de) * 1979-01-11 1980-08-06 CROMPTON & KNOWLES CORPORATION Greiferschützenabschuss- und -auffangvorrichtung für pneumatischen Webstuhl
US4207926A (en) * 1979-03-12 1980-06-17 Crompton & Knowles Corporation Loom projectile
EP0018066A1 (de) * 1979-03-12 1980-10-29 CROMPTON & KNOWLES CORPORATION Webstuhlprojektil
FR2588283A1 (fr) * 1985-10-08 1987-04-10 Klimovsk Sp K B Proekt Tkats Peigne pour metier a tisser
US5664609A (en) * 1995-05-12 1997-09-09 Lindauer Dornier Gesellschaft Mbh Weaving reed and gripper guide element for a loom
US6021820A (en) * 1996-10-02 2000-02-08 Texo A.B. Weaving device with practile fluid handling
US6158479A (en) * 1998-03-24 2000-12-12 Texo Ab Arrangement for shooting and accelerating a shuttle in a weaving machine
US20070169831A1 (en) * 2003-07-17 2007-07-26 Te Strake Textile B.V. Weaving device
WO2005026425A1 (de) * 2003-08-28 2005-03-24 Lindauer Dornier Gesellschaft Mbh Einrichtung an einer düsenwebmaschine zum eintragen des schussfadens und kartusche zum einsetzen in das mischrohr der hauptblasdüse einer düsenwebmaschine
NL1026238C2 (nl) * 2004-05-19 2005-11-22 Te Strake Textile B V Drager voor het inbrengen van een inslagdraad in het inslagvak van een weefinrichting.
WO2006046856A1 (en) * 2004-10-29 2006-05-04 Te Strake Textile B.V. Weaving device
WO2007039244A2 (de) * 2005-10-01 2007-04-12 Sultex Ag Verfahren zur abstützung eines schussfadenführungselements
WO2007039244A3 (de) * 2005-10-01 2007-10-11 Markus Farner Verfahren zur abstützung eines schussfadenführungselements

Also Published As

Publication number Publication date
AT332319B (de) 1976-09-27
DE2337787A1 (de) 1974-02-07
FR2193897B1 (de) 1978-04-14
DE2337785A1 (de) 1974-02-07
DE2337786C2 (de) 1982-08-05
FR2193897A1 (de) 1974-02-22
GB1441151A (en) 1976-06-30
ZA74511B (en) 1974-04-24
SU650515A3 (ru) 1979-02-28
ZA732428B (en) 1974-04-24
BE800814A (fr) 1973-10-01
ZA74512B (en) 1974-04-24
FR2296714A1 (fr) 1976-07-30
DD105265A5 (de) 1974-04-12
ATA629773A (de) 1975-12-15
SU664573A3 (ru) 1979-05-25
GB1441152A (en) 1976-06-30
SU515468A3 (ru) 1976-05-25
CH560264A5 (de) 1975-03-27
SE414795B (sv) 1980-08-18
BR7305342D0 (pt) 1975-09-02
DD105264A5 (de) 1974-04-12
SE434523B (sv) 1984-07-30
GB1441153A (en) 1976-06-30
FR2296715B1 (de) 1978-04-14
CH558436A (de) 1975-01-31
AR203270A1 (es) 1975-08-29
AR197516A1 (es) 1974-04-15
SE414794B (sv) 1980-08-18
IT988171B (it) 1975-04-10
AU5584573A (en) 1974-11-21
AT326058B (de) 1975-11-25
SE7702134L (sv) 1977-02-25
JPS5940933B2 (ja) 1984-10-03
DD105263A5 (de) 1974-04-12
FR2296715A1 (fr) 1976-07-30
CA978061A (en) 1975-11-18
IN139863B (de) 1976-08-14
AT327119B (de) 1976-01-12
CS209408B2 (en) 1981-12-31
DE2337786A1 (de) 1974-02-07
NL7309850A (de) 1974-01-28
ATA629573A (de) 1975-01-15
AU475317B2 (en) 1976-08-19
DE2337787C2 (de) 1982-08-05
CH559790A5 (de) 1975-03-14
JPS4957153A (de) 1974-06-03
DE2337785C2 (de) 1982-08-05
ATA629673A (de) 1975-03-15
SE7702135L (sv) 1977-02-25
FR2296714B1 (de) 1978-04-14

Similar Documents

Publication Publication Date Title
US3831640A (en) Pneumatic loom
US3139118A (en) Pneumatic weft guides for looms
US3821972A (en) Method of picking weft yarns in shuttleless looms
US4347872A (en) Air weft insertion system
US3395737A (en) Pneumatic filling inserter
US3181571A (en) Pneumatic weft inserting means
US3557845A (en) Guiding device for picked weft threads
US3958609A (en) Devices for insertion of filling yarn in a loom by means of a fluid
US3412763A (en) Pneumatic loom
US3902530A (en) Projectile picking means for a pneumatic loom
US3868976A (en) Pneumatic weft inserting mechanism
CA1151508A (en) Strand delivery and storage system
US4046174A (en) Pneumatic loom
US4487236A (en) Pneumatic weaving machine
US3796236A (en) Weft thread inserting means
US3461919A (en) Stationary filling supply loom
US4134435A (en) Weft storage means for fluid jet loom
US4494577A (en) Weft inserting device for jet looms
US3376901A (en) Device for making up a weft to be used in connection with a loom
US3124167A (en) Pneumatic weft inserting means
EP0291744A2 (de) Vorrichtung zum Herstellen von eingelegten Leisten in Webmaschinen
US4553570A (en) Process for the insertion in the form of a loop of a weft yarn in the shed of a weaving machine and weaving machine equipped with a device for carrying out this process
US3195580A (en) Device for piling-up a weft-thread for looms
US3224465A (en) Continuous weaving loom
GB1436541A (en) Weaving