US3215167A - Loom filling stop motion - Google Patents
Loom filling stop motion Download PDFInfo
- Publication number
- US3215167A US3215167A US271235A US27123563A US3215167A US 3215167 A US3215167 A US 3215167A US 271235 A US271235 A US 271235A US 27123563 A US27123563 A US 27123563A US 3215167 A US3215167 A US 3215167A
- Authority
- US
- United States
- Prior art keywords
- filling
- loom
- feeler
- lay
- 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
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Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
- D03D51/18—Automatic stop motions
- D03D51/34—Weft stop motions
Definitions
- the filling feeler would normally be held suspended by such a pick and would not signal a defect.
- the feeler is capable of stopping the loom on a tight pick to avoid a cloth defect.
- FIG. 1 is a front elevation from slightly above the horizontal of the invention applied to a loom;
- FIG. 2 is an exploded side View of the filling feeler with the associated parts in -the normal running position shown in FIG. 1;
- FIG. 3 is a portion of the view of FIG. 1 with the parts as positioned after detecting a tight pick;
- FIG. 5 is a portion of the View in FIG. 1 with the parts as pos-itioned after detecting a broken pick or the absence of a pick;
- FIG. 6 is a view similar to FIG. 2 but showing a broken or loose pick
- FIG. 8 is an exploded view of the cam and follower for the filling supporting fork shown in FIG. 7;
- FIG. 10 is a perspective side view of the filling feeler tension control device
- FIG. 1l is a plan view of the left-hand end of the loom and the invention shown in FIG. 1;
- FIG. l2 is a left-hand side elevation of the knock-off bunter driving and releasing mechanism
- FIG. 13 is a horizontal cross section on the center line of the knock-off bunter driving and releasing mechanism seen in FIG. l1;
- FIG. 14 is a diagrammatic view as seen from the right of FIG. 1l of the knock-off bunter showing the reversing motion imparted by the primary reset cam;
- FIG. 15 is ⁇ a similar view showing the further reversing motion and the holding position imparted by the secondary reset cam.
- the frame 20 may be of usual construction for a shuttleless type loom, and as the instant invention is a center filling motion which derives its power from the left-hand side, only that part of the machine is outlined.
- the frame supports a tape guide 21 and a left-hand carrier 22 with a top mo-tion 23 extended upward to control the usual harness frames 24 by harness wires and straps 25.
- the looms cam shaft 26 has a sprocket 27 firmly attached near the left-hand end for continuous rotation in the direction as shown by the arrow in FIG. 1, which is over the top and toward the front of the loom.
- a link chain 28 extends between the sprocket 27 and a further simil-ar sprocket 29 of exactly the same size which is fastened to a stud 30 supported by frame 20.
- Keyed to stud 30 is a spur gear 31 which is in mesh with a similar gear 32 of the same size which is keyed on a second stud 33, also supported by the frame member 20.
- a sprocket 34 Fastened to the stud 33 and adapted to rotate therewith is a sprocket 34 which turns another link chain 3S which extends upward to the level of the loom lay 36 and a further sprocket 37 of the same size as the sprocket 34.
- the purpose of the above sprocket and chain linkage is to transmit the same rotating speed from the loom cam shaft to the filling stop motion, to be further explained herebelow. It will be seen that the rotation of the cam shaft 26 (FIG. 1), through similar sized sprockets, will turn the gear 31 at an equal speed. The rotating direction is reversed by the rotation of the gear 32 but the ratio remains one to one as the gears are of equal size.
- the sprockets 34 and 37 are also of equal size, so for each revolution of the cam shaft which inserts a single pick by the loom, the sprocket 37 will rotate one turn and the filling feeler and stop motion may be timed accurately to coincide with each pick.
- An L-shaped bracket 38 is securely fastened to, and extends outwardly and downwardly from, the lay 36.
- a second bracket 39 is fastened to the face of the lay 36 (FIG. l) as with a bolt 40 positioned inwardly from the left-hand end and at a point somewhat beyond the center of said lay.
- a continuously rotating shaft 41 extends between and is supported by the two brackets 38 and 39 with anti-friction bearings and is caused to rotate by the sprocket 37 in the direction shown by the arrow (FIG. 1).
- the shaft 41 is inserted through a sleeve 42 which extends along the central portion of the shaft for a large portion of its length.
- the sleeve is free to rotate with the shaft 41 or may be caused to stop or to rotate in the opposite direction as will be later described.
- the sleeve 42 is supported for free rotation by two downwardly extending bearing members 43 and 44 which are secured to the face of the lay 36 by bolts 45 and 46 (FIG. 1).
- a bell-shaped casing 47 Secured at the left-hand end of the sleeve 42 is a bell-shaped casing 47 with a hub 43 fastened by set screws 49 (FIGS. l, 1l, l2, and 13). Attached to the hub 48, as by a welding, is a pointed bunter 50 which is adapted, when in the forward position (FIG. 1l), to strike a knock-off lever 51 and thereby stop the loom in a known manner by actuating a switch (not shown).
- the casing 47 is fastened to the left-hand end of the outer periphery of the sleeve 42 and the bell portion extends beyond the end of the sleeve 42 as shown in FIG. 13.
- a key member 52 is firmly attached to the shaft 41 by a screw 53 and is adapted to rotate on the shaft 41 within the bell casing 47 (FIGS. 12 and 13).
- the key 52 is fastened to the shaft in a somewhat eccentric manner with the longer arm being hollow to enclose a compression spring 54 to urge a ball bearing 55 into constant contact with the inner rim of the bell casing 47.
- An indentation 56 is positioned in the path of the bearing 55 on the inner rim of the casing 47 and is made in the form of a spherical segment to fit the surface of the bearing 55 (FIGS. 12 and 13).
- the spring compressed key member which comprises the key 52, spring 54, and ball bearing 55 acts with the indentation to form a type of clutch to rotate the sleeve 42 in unison with the shaft 41 during normal loom operation.
- the depth of the indentation 56 together with the pressure from the spring 54 when in alignment will cause the sleeve 42 and the shaft 41 to rotate together. However, if the sleeve 42 is restrained in a manner to be further explained, the ball will become disengaged and rotate about the inner rim of the bell casing 47.
- a sleeve stopping device comprising a hub 57, a tightening screw 58, an L-shaped upper hook 59 and a tooth-shaped lower hook 60.
- the two hook members are spaced apart on a radial line and are adapted to rotate with the Sleeve 42 (FIGS. 3, 4, and and become means mentioned above by which the sleeve may be restrained from rotating in unison with shaft 41.
- a continually rotating cam 61 for oscillating the filling detecting means in a manner to be later described, is firmly attached to the shaft 41 adjacent the right-hand end of the sleeve 42.
- a generally U-shaped bracket 62 is bolted at 63 near the center of the lay with the arms extending in a forward direction and positioned slightly above the shaft 41 (FIG. 7).
- a shaft 64 is supported by the outer arms of the bracket 62 by anti-friction bearings which extend upon the shaft inwardly between the arms.
- Fixed rmly to the shaft 64 centrally of the arms of bracket 62 by an adjusting collar 65 and a screw 66 is a pivoting feeler time 67 of thin metal stock (FIGS. 6 and 7).
- a cam follower 68 is welded to the end of shaft 64 where it extends through the left-hand arm of the bracket 62 and by oscillating with the rise and fall of the cam 61 it will pivot the feeler tine 67.
- the follower 68 is generally oblong in shape with the two long sides forming an upward curve to generally conform with the cam 61 (FIGS. 3, 4, and 7).
- the short upper side (FIGS. l and 3) serves two purposes by having a cam follower surface 69 (FIG. 6) at the right-hand end, and the center and left end adapted to trigger the hook members 59 and 61).
- the follower 68 is positioned between the hooks 59 and 60 as they are rotated on .sleeve 52 during normal weaving (FIGS.
- a filling supporting means which comprises a two-tined fork 70, firmly secured with screws 71 into a threearmed bracket 72 (FIG. 7) is pivotally mounted on the extended anti-fraction bearings on the short shaft 64.
- An angle bracket 73 (FIG. 3) is fastened to the front of the bracket '72 by screws 74 to support a cam follower 75 which is attached to the bracket 73 by a screw 76 (FIGS. 7 and 8).
- the follower 75 tracks a face cam 77 which is fastened for continuous rotation to the shaft 41 by a screw 78.
- the fork 70 and the feeler tine 67 descend into a slot 79 in the lay 36 during the beat-up action (FIGS. 3 and 5).
- the feeler tine 67 is raised to a sufficient height by the cam 61 to allow the left-hand carrier 22 to pass underneath. Transfer of the loop of yarn is made a little to the right of the feeling device so that as the left-hand carrier returns under the feeler tines, two ends of filling extend toward the right side.
- the supporting fork 7() is then raised upward through the lower shed to a predetermined height to support the filling yarn. As soon as the left-hand carrier has drawn the loose end of filling beyond the feeler, the tine is lowered to rest upon the held end of filling St) and will sense its presence and condition (FIG. l). Because each pick of yarn is held by the supporting fork at a constant height and as the feeler tine descends between the supporting arms, the tension and timing of the feeler tine can be much more accurately controlled than has been previously possible.
- the parts of the instant invention will be in the positions illustrated in FIGS. 1 and 2.
- the tine 67 is held by the yarn 80 at an intermediate height
- the cam follower or stop indicating member 68 is held between the hook members or interlocking members 59 and 60 so that the sleeve 42 and the bunter 50 continue to rotate in time with the shaft 41.
- the feeler tine and the supporting fork are drawn away from the filling yarn and they drop below the shed into the lay slot 79.
- FIGS. 5 and 6 illustrate the positions taken when a broken or very loose pick is sensed by the feeler.
- the tine drops to its lower position which will pull the stop indicating member 68 down to catch the lower hook 60 and thus stop the rotating sleeve 42 with the bunter 50 (FIG. 1l) held to knock off the loom.
- FIGS. 3 and 4 the effect of an excessively tight pick is shown.
- the loose filling end as it is drawn through the left-hand carrier, in gyrating about will hitch onto the carrier or even a warp end.
- the carrier will oon- ⁇ tinue to pull outward and the yarn Will break which leaves a pick that is shorter than the cloth width and therefore a defect.
- the feeler being set to sense the yarn during the time it is becoming tight and before it breaks would not previously detect this condition and would not stop the loom.
- a tight pick holds the tine 67 at its maximum height and holds the stop indicating member 68 in the path of the upper hook 59 which will also stop the loom.
- FIG. 10 a means is illustrated which aids the spring by raising and lowering it in time with the feeler cam 61.
- the feeler tine need rely only in part on the compressive action of the spring.
- a cam 81 is fastened to rotate with the sleeve 42 and is contacted by a cam follower 82 held by one arm of a bell crank lever 83.
- a shaft 84 is inserted through the lower end of the bearing 44 as a pivot for the bell crank 83 which is urged upward against the cam 81 by a spring 85.
- a bracket 86 extends toward the rear of the loom to support pivotally one end of a lever 87.
- a pin 88 fastened to the lower end of the bell crank 83 extends through a slot 89 intermediate the ends of the lever 87.
- a horizontal lever 90 is firmly attached to be raised and lowered by the motion of the lever 87. Loosely held by a screw 91 at the other end of the lever 90 a vertical rod 92 extends upward through a slot 93 in the forward end of the cam follower 68 (FIG. l0).
- a compression spring 94 is adjustably held surrounding the central portion of the rod 92 by a nut 95, a check nut 96, and a spacer 97. Soldered to the under side of the cam follower slot 93 a hollow sleeve 98 encloses a roller bearing 99 in a horizontal position (FIG. 2).
- the cam 81 will make a complete revolution with each pick of the loom so that the timing may be accurately controlled to coincide with filling feeling and supporting function.
- the pin 88 will raise the levers 87 and 90 and the rod 92 will rise to aid the spring 94 in applying tension to the cam follower 68 and the feeler tine 67.
- a continually rotating shaft 100 is positioned beneaththe shaft 41 and is supported with bearings in the downward extending portions of the bracket 38 and the bearing member 43.
- a sprocket 101 similar in size to the sprocket 37, is secured to the left end of the shaft 100 and is in contact with the link chain 35.
- Beneath and forward of the shaft 100 and supported by the bracket 38 is a stud 102 which rotates an idler sprocket 103 positioned to press the chain 35 into close contact with the sprocket 101.
- a double cam is fastened to the right end of the shaft 100 and comprises a primary reset cam 104 and a secondary reset cam 105 which rotate in timed relationship with the bell casing 47 positioned above.
- a first pin 106 is spaced apart from a second shorter pin 107 fixed in the same direction also on the rim of the casing 47.
- Pin 106 is adapted to be contacted by cam 104 and pin 107 by cam 105 when the casing 47 is held stationary in the knockoff position.
- the purpose of these two cams and pins is to reverse the normal rotation direction of the bell casing 47 and to then hold it stationary until the key member 52 completes its rotation and seats the ball bearing 55 into the indentation 56.
- FIG. 14 shows in solid lines the position of these parts after the loom has stopped.
- the bunter 50 is in a horizontal forward pointing position after having struck the knock-off lever, and the large pin 106 is at the low point of its travel.
- shaft 100 is rotated clockwise and the cam 104 contacts pin 106 and rotates the casing 47 to the dotted line positions as shown in FIG. 14 marked by prime numbers.
- FIG. 15 shows a continuation from FIG. 14 with the solid line drawing and the prime numbers being rotated to the dotted line positions and the secondary numbers.
- the small pin is held at the position 1072 by the high side of the cam 1052 as it rotates and the key member 52 has then rotated to reset the ball bearing 55 (FIGS. 12 and 13).
- Both shafts 41 and 100 will then rotate together in a clockwise direction, as viewed in FIGS. 14 and 15, with the cams not contacting the pins until the loom is again stopped by a filling defect.
- the feeler tine 67 will rise through the warp ends to allow the left-hand carrier to pass beneath and rneet the inserting carrier.
- the left-hand carrier receives the loop of filling and as it is drawn under the feeler, the filling support fork rises through the warp yarn to raise the lling above the lower shed to a plane which is constant at each pick.
- the left-hand carrier continues its travel toward the selvage while drawing in the loose end of filling and paying out the held end.
- the cam follower 68 loses contact with the cam 61 andthe tine 67 is lowered to rest upon the filling end with tension controlled by the spring 94.
- the tension can be readily adjusted to meet varying conditions in weaving to avoid introducing filling kinks which may -becaused ⁇ by excess feeler weight.
- a filling detecting means mounted on said lay, said means being adapted to signal for loom stoppage upon sensing the absence of a filling pick, said means being further adapted to signal for loom stoppage upon sensing a loose broken pick, said means being still further adapted to signal for loom stoppage upon sensing an unusually tight pick, a filling supporting means to oscillate on said lay in timed relationship to the insertion of the filling yarn, and rotating camming means to oscillate said detecting means and said supporting means.
- a filling detecting means mounted intermediate the ends of said lay comprising a pivotally disposed feeler tine being movable upwardly between warp threads to an intermediate height 4above the filling as it is inserted and movable downwardly to rest upon the normally tensioned filling yarn, said tine being movable downwardly to a lower position upon encountering no filling yarn, said tine assuming said lower position upon encountering a loose broken filling yarn, said tine being movable upwardly to a maximum height position upon encountering an unusually tight filling yarn, said tine being adapted to signal for loom stoppage when in the said maximum height position and when in said lower position, a filling supporting means for raising the filling yarn above the lower shed in cooperation with said detecting means, a continuously rotating shaft mounted longitudinally on said lay, and camming means affixed to rotate with said shaft for controlling the pivotal movement of said feeler tine and said supporting means.
- a filling de-I tecting means mounted intermediate the ends of said lay comprising a pivotally disposed feeler tine being movable upwardly between warp threads to an intermediate height above the filling as it is inserted and movable downwardly to rest upon the normally tensioned filling yarn, said tine being movable downwardly to a lower position upon encountering no filling yarn, said tine assuming said lower position upon encountering aloose broken filling yarn, said tine being movable upwardly to a maximum height position upon encountering an unusually tight filling yarn, said tine being adapted to signal for loom stoppage when in said maximum height position and when in said lower position, a pivoting fork member positioned lbelow and movable upwardly between warp threads for cooperating with said feeler tine by raising and supporting a portion of each inserted filling yarn during the feeling action by said tine, a continuously rotating shaft mounted longitudinally on said lay, and camming means affixed to rotate with said shaft
- a filling detecting means Imounted on said lay comprising a pivotally disposed feeler tine adapted to detect a defective pick of filling prior to the beat-up action of the loom, a filling supporting means for raising the filling yarn above the lower shed in cooperation with said detecting means, a continuously rotating shaft mounted on said lay, camming means afiixed to rotate with said shaft for controlling the raising and lowering of said detecting means and said supporting means, a loom stopping mechanism, a knock-off lever pivotally disposed to contact the said stopping mechanism, a knock-off bunter releasably rotated by said shaft, and interlocking means for arresting rotation of said bunter in a position to contact said knockoff lever upon signal from said detecting means.
- a filling detecting means mounted intermediate the ends of said lay comprising a pivotally disposed feeler tine being movable upwardly between warp threads to an intermediate height above the filling as it is inserted and movable downwardly to rest upon the normally tensioned filling yarn, said tine being movable downwardly to a lower position upon encountering no filling yarn, said tine assuming said lower position upon encountering a loose broken filling yarn, said tine being movable upwardly to a maximum height position upon encountering ⁇ an unusually tight filling yarn, said tine being adapted to signal for loom stoppage when in said maximum height position and when in said lower position, a pivoting fork member positioned below and movable upwardly between warp threads for cooperating with said feeler tine by raising and supporting a portion of each inserted filling yarn during the feeling action by said tine, a continuously rotating shaft mounted longitudinally on said lay being adapted to rotate in timed relationship to the oscillating cycle of said
- a filling detecting means for a loom which comprises a feeler member oscillatable between maximum and minimum height positions to detect the presence, absence, and tension of filling yarn being inserted in a warp shed, said feeler member being operable to effect loom stoppage When encountering no filling yarn in said shed, said feeler member Ibeing further operable to effect loom stoppage when encountering abnormal tension upon said filling yarn in said shed.
- a filling detecting means for a loom which comprises a feeler member oscillatable between maximum and minimum height positions to detect the presence, absence, and tension of lling yarn being inserted in a Warp shed, an interlocking member having upper and lower portions cooperable with said feeler member to effect loom stoppage.
- a filling detecting means for a loom which comprises a feeler member oscillatable between maximum ⁇ and minimum height positions to detect the presence, absence, and tension of filling yarn being inserted in a warp shed, a loom stop indicating member fixed to said feeler member .and oscillatable therewith, and an interlocking member having upper and lower portions adapted to be engaged by said stop indicating member.
- a filling detecting means for a loom which comprises a feeler member oscillatable between maximum and minimum height positions to detect the presence, absence,
- said feeler member being operable to effect loom stoppage when encountering no filling yarn in said shed, said feeler member being further operable to effect loom stoppage when encountering abnormal tension upon said filling yarn in said shed, a loom stop indicating member fixed to said feeler member and oscillatable therewith, a spring tensioning means operable upon said indicating member for actuating said feeler member, and spring positioning means for anticipating the tension requirements upon said spring tensioning means and for speeding the reaction of said feeler member.
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- Textile Engineering (AREA)
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Description
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US271235A US3215167A (en) | 1963-04-08 | 1963-04-08 | Loom filling stop motion |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US271235A US3215167A (en) | 1963-04-08 | 1963-04-08 | Loom filling stop motion |
Publications (1)
Publication Number | Publication Date |
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US3215167A true US3215167A (en) | 1965-11-02 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US271235A Expired - Lifetime US3215167A (en) | 1963-04-08 | 1963-04-08 | Loom filling stop motion |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3442301A (en) * | 1967-07-27 | 1969-05-06 | Marshall John D | Loom stop motion |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB400891A (en) * | 1932-06-30 | 1933-11-02 | Kurt Schwabe | Weft stop motion for mechanical weaving looms |
US2123472A (en) * | 1934-07-12 | 1938-07-12 | Lohsse Wilhelm | Intermediate weft stop motion for looms with feeler and lifter |
DE675283C (en) * | 1936-11-13 | 1939-05-05 | Schorch Werke Akt Ges | Middle weft thread guard for looms |
FR1009546A (en) * | 1950-01-31 | 1952-05-30 | Fumat Ets | Central weft cutter for looms |
US2647545A (en) * | 1949-08-06 | 1953-08-04 | Draper Corp | Stop motion for looms |
US3012589A (en) * | 1959-01-12 | 1961-12-12 | Sakamoto Kyugoro | Automatic stop device in power looms |
US3129902A (en) * | 1961-03-22 | 1964-04-21 | Alsacienne Constr Meca | Thread feed control device for textile machinery |
-
1963
- 1963-04-08 US US271235A patent/US3215167A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB400891A (en) * | 1932-06-30 | 1933-11-02 | Kurt Schwabe | Weft stop motion for mechanical weaving looms |
US2123472A (en) * | 1934-07-12 | 1938-07-12 | Lohsse Wilhelm | Intermediate weft stop motion for looms with feeler and lifter |
DE675283C (en) * | 1936-11-13 | 1939-05-05 | Schorch Werke Akt Ges | Middle weft thread guard for looms |
US2647545A (en) * | 1949-08-06 | 1953-08-04 | Draper Corp | Stop motion for looms |
FR1009546A (en) * | 1950-01-31 | 1952-05-30 | Fumat Ets | Central weft cutter for looms |
US3012589A (en) * | 1959-01-12 | 1961-12-12 | Sakamoto Kyugoro | Automatic stop device in power looms |
US3129902A (en) * | 1961-03-22 | 1964-04-21 | Alsacienne Constr Meca | Thread feed control device for textile machinery |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3442301A (en) * | 1967-07-27 | 1969-05-06 | Marshall John D | Loom stop motion |
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Legal Events
Date | Code | Title | Description |
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AS | Assignment |
Owner name: DRAPER CORPORATION, Free format text: CHANGE OF NAME;ASSIGNOR:DELTA ACQUISITION CORPORATION,;REEL/FRAME:004097/0735 Effective date: 19820920 Owner name: DELTA ACQUISTION CORPORATION; HORNADAY RD., GREENS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ROCKWELL INTERNATIONAL CORPORATION;REEL/FRAME:004113/0020 Effective date: 19820321 |
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AS | Assignment |
Owner name: CITICORP INDUSTRIAL CREDIT INC., A CORP. OF DE Free format text: SECURITY INTEREST;ASSIGNOR:DRAPER CORPORATION A CORP. OF GA F/K/A DELTA ACQUISITION CORPORATION;REEL/FRAME:004070/0533 Effective date: 19821021 |
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AS | Assignment |
Owner name: DRAPER CORPORATION, GREENSBORO, NORTH CAROLINA A C Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:CITICORP INDUSTRIAL CREDIT, INC.;REEL/FRAME:004664/0583 Effective date: 19860331 |