US3413999A - Selvage looping device for loom - Google Patents
Selvage looping device for loom Download PDFInfo
- Publication number
- US3413999A US3413999A US618100A US61810067A US3413999A US 3413999 A US3413999 A US 3413999A US 618100 A US618100 A US 618100A US 61810067 A US61810067 A US 61810067A US 3413999 A US3413999 A US 3413999A
- Authority
- US
- United States
- Prior art keywords
- selvage
- loom
- needle
- sword
- loop
- 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
- D03D5/00—Selvedges
Definitions
- the instant invention provides improvement in means for holding to full width each loop of filling yarn which eonnects two consecutive picks.
- a rigid member is moved adjacent to or just inwardly of the selvage threads to retain the loop as the pick is inserted and thus relieve the selv'age threads from the tension exerted by the ingoing filling yarn.
- the rigid member is removed from its position just prior to beat-up by smooth-acting, positive linkage.
- the instant invention is directed toward overcoming the disadvantages stated above by providing positively controlled motion to a selvage needle so as not to be adversely aifected by increases in loom speed.
- high-speed looms especially those of the shuttleless type, where picks of filling may be inserted in excess of four times per second, there is insufficent time for an uncontrolled selvage needle to perform uniformly.
- the action is initiated from bumping by the lay beam, the uncert'ainty of vibration and overthrow of the parts, as well as the lower reaction of spring induced movement, have made this type of device unreliable.
- the reciprocal motion of the sword actuates positive linkage in a manner to pivot the selvage needle into and out of the holding position in timed relationship with the moving reed.
- the straight-line motion from the sword is translated to a crank-arm action so that the stroke accelerates as the sword approaches front center. This permits ⁇ a relatively slow pivot-al motion for the selvage needle and a quickening as the reed nears the beat-up point.
- FIG. 1 is an elevation of the invention in Operating position upon a loom
- FIG. 2 is an exploded view of the parts in FIG. 1.
- FIG. 1 fragmentary portions of a loom are shown to point out the location of the invention.
- a sword 20 is fixed for reciprocation Within the loom in a known manner and carries at its upper end 21 a lay beam 22 with a racew'ay 23 and a reed 24 fastened thereto.
- a loomside 25 supports a filling motion case 26 and a loom temple 27 is fastened to a fixed bracket 28.
- the parts thus far described are those for a shuttleless type loom; however, the invention is applioable to a fly-shuttle loom aS well.
- Warp threads 29 are adapted to be opened as Warp sheds to receive individual picks of filling 30 in forming fabric.
- a bracket 31 is secured by screws 32 to a stationary part of the loom such as the case 26 in a location forwardly of the temple 27.
- a bearing 33 is supported horizontally by the bracket 31 in a hole 34 with a nut 35.
- a support member 36 having an actuating arm 37 is pivotally held by the bearing 33.
- a rod 38 extending toward the center of the loom, is firmly fixed into the member 36 to be pivoted therewith.
- a collar 39 is adjustably fastened along the rod 38 in any desired position with a rearwardly directed rod 40 adjustably fastened into the collar 39.
- Fastened to the end of rod 40 is a downwardly extending pointed needle 41 which is sufiiciently stiff to restrain each loop of filling around it as'the pick is inserted.
- the needle 41 is pivoted through a Vertical plane from an inactive position (FIG. 1) out of the way of the forwardly moving reed 24 downwardly to a loop-holding position as shown in solid line drawin-g.
- the point of the needle In placing the needle into a loop-holding position, the point of the needle is below the level of the ingoing pick of filling and may be inserted betwen the threads near the edge of the selvage or it may be outside of the selvage to form the loop beyond the full width of the Warp threads.
- the lateral position is readily adjustable along the rod 38.
- the purpose of the needle is primarily that of reinforcing the outer selvage threads momentarily as the filling is inserted and the tension at the loop increased.
- a rigid connecting rod 42 is flexibly fastened to the arm 37 and extends downwardly along the loopside 25.
- a bracket 43 is fastened to the loomside 25 by screws 44 to provide a fiXed pivot point as at the screw 45.
- a crank lever 46 is fixed to the pivot point 45 on a bearing 47 and has an arm 48 by which the lever may be pivoted.
- a ball-type type rod end 49 is tightened to the lower end of the rod 42 and is flexibly fastened to the arm 48.
- a bracket 50 is fixed to the sword 20 by screws 51 and has one end of a lengthwise adjustable link 52 fastened theireto.
- the other end of the link 52 is fastened to the distal end 53 of the crank lever 46 which will be pivoted by the reciprocal motion of the sword 20.
- the lever arm 48 is positioned to be nearly Vertical when the sword 20 is at the back-center point of its travel and will pivot to a forwardly tilted condition as the sword reaches front center. It will be remembered that, as the sword approaches front center, the reed 24 will be making a beat-up of the .pick of filling. It is essential that the needle 41 be moved out of the selv'age prior to beat-up, but it is desirable that this -movement of the needle be delayed as long as possible.
- the needle Will move to the loop-holding position and as the rod is lowered, the needle will become inactive.
- the rate of descent for the'rod' 42 commences rel'atively slowly and accelerates as the arm pivots toward the lower end of itS arc. This permits the delayed action in removing the needle from the loop-holding position.
- the instant invention overcomes the disadvantage of the previously known deviceswith a positively driven linkage whereby the selvrage looping needle is withdrawn from action in a stroke having smooth acceleration and deceleration.
- a selvage looping device which comprises:
- said support means includes a laterally adjustable member for 4.
- said cr-ank lever is supported at a fixed point upon the loom and pivots through an arc from a generally upright condition to a forwardly tilted condition, said crank lever reaching the upright condition as said sword arrives at back-center of its travel and reaching the forwardly tilted condition as said sword arrives at front-center of its travel.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Description
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US618100A US3413999A (en) | 1967-02-23 | 1967-02-23 | Selvage looping device for loom |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US618100A US3413999A (en) | 1967-02-23 | 1967-02-23 | Selvage looping device for loom |
Publications (1)
Publication Number | Publication Date |
---|---|
US3413999A true US3413999A (en) | 1968-12-03 |
Family
ID=24476323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US618100A Expired - Lifetime US3413999A (en) | 1967-02-23 | 1967-02-23 | Selvage looping device for loom |
Country Status (1)
Country | Link |
---|---|
US (1) | US3413999A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3707171A (en) * | 1970-06-09 | 1972-12-26 | Mueller Jakob | Needle loom for pile fabrics |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE553260C (en) * | 1927-03-06 | 1932-06-23 | Fritz Eilhauer | Device on wire looms for tensioning the weft wire and keeping the fabric wide |
FR843602A (en) * | 1938-09-19 | 1939-07-06 | Automatic hooks preventing the weft thread from being pulled on the selvedge threads | |
GB896519A (en) * | 1959-03-12 | 1962-05-16 | Arthur Dodgson Ardon Ltd | Improvements in or relating to looms for weaving |
US3145739A (en) * | 1960-03-09 | 1964-08-25 | Metzler Kurt | Weft sensing means |
-
1967
- 1967-02-23 US US618100A patent/US3413999A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE553260C (en) * | 1927-03-06 | 1932-06-23 | Fritz Eilhauer | Device on wire looms for tensioning the weft wire and keeping the fabric wide |
FR843602A (en) * | 1938-09-19 | 1939-07-06 | Automatic hooks preventing the weft thread from being pulled on the selvedge threads | |
GB896519A (en) * | 1959-03-12 | 1962-05-16 | Arthur Dodgson Ardon Ltd | Improvements in or relating to looms for weaving |
US3145739A (en) * | 1960-03-09 | 1964-08-25 | Metzler Kurt | Weft sensing means |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3707171A (en) * | 1970-06-09 | 1972-12-26 | Mueller Jakob | Needle loom for pile fabrics |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
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 |
|
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 |
|
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 |