US3511284A - Filling selective device for shuttleless looms - Google Patents
Filling selective device for shuttleless looms Download PDFInfo
- Publication number
- US3511284A US3511284A US748732A US3511284DA US3511284A US 3511284 A US3511284 A US 3511284A US 748732 A US748732 A US 748732A US 3511284D A US3511284D A US 3511284DA US 3511284 A US3511284 A US 3511284A
- Authority
- US
- United States
- Prior art keywords
- filling
- guiding members
- cam
- thread guide
- shuttleless
- 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
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
Definitions
- This invention pertains to shuttleless looms of the type where cut lengths of filling from an outside source are inserted into individual warp sheds. More particularly this invention pertains to improved mechanism for alternately presenting filling drawn from two sources for insertion for varied time intervals to form contrastlng stripes in the ⁇ woven material.
- the invention is directed toward simplified mechanism whereby pivotally movable thread guides may alternate between inoperative and operative positions in any prescribed order. A locking device automatically releases one thread guide for operation when actuated to hold the other in an inoperatlve position.
- This invention provides two-color filling selection by selectively varying the paths of two yarns so that one is placed in position to be woven while the other is inactive.
- Pivotable thread guides align the selected yarn with the otherwise standard filling control mechanism for weaving in a manner well known with this shuttleless type of loom. Pivotal motion is transmitted to the thread guides by two rack gears carrying cam follower rollers which may selectively conform to identical rotating cams.
- the two cam followers are controlled in opposition, in and out of action, by a selection lever supported for movement between two positions. One position of the selection lever acts to lock a cam follower out of action and release the other, while the other position permits the reverse action to occur.
- FIG. l is a plan view of the selective device fixed to the filling control mechanism
- FIG. 2 is an enlarged view in perspective of a portion of that shown in FIG. l;
- FIG. 3 is a perspective view of that shown in FIG. l, but with one of the thread guides moved to a second position for presenting filling.
- a filling control mechanism generally designated 20 is fixed upon framework members 21 and 22 of a shuttleless type loom ⁇ well known in the weaving art.
- the filling control mechanism is shown in phantom lines to distinguish the positioning of the invention and only those portions necessary to a complete understanding will be listed here.
- a tensioning device 23 through which two continuous strands of filling 24 and 25 are drawn as received from two outside sources of supply (not shown).
- the filling strands 24 and 25 are supported in separation by two generally horizontal rods 26 and 27 and threaded through two thread guide eyes 28 and 29 (FIG. 3) which will be more fully explained below.
- filling strands are then extended to and controlled in a manner known in the art by a cutter-binder and combined second-pick positioner labeled here as 30.
- a depressor 31 will draw either filling strand 24 or 25 to a downwardly extending V formation to be there contacted and taken over by a filling carrier (not shown) fixed to a reciprocating tape 32.
- the filling control mechanism thus far explained does not differ materially from that well known for handling a single strand of filling.
- This invention provides a device to cooperate with the known filling control mechanism for handling two strands of filling selectively.
- the filling control mechanism 20 is driven by a shaft 33 (FIG. l) which is rotating a single revolution per two picks inserted by the loom. This same rotating speed is transmitted to the selective device of the invention by a sprocket 34 driving a link chain 35 in mesh with a second similar sprocket 36 fixed upon the outer end of a shaft 37.
- the shaft 37 is journalled between two sides of a housing 38 which is fastened to the framework member 22 by screws 39. Secured for rotation with shaft 37 are two synchronized identical cams 40 and 41.
- cam follower rods 42 and 43 each freely supporting a cam follower roller 44 and 45 in positions to make contact with cams 40 and 41 respectively.
- the cam follower rods 42 and 43 are slidably supported upon the housing 38 with their positions being maintained by a plate 46 fxedly fastened by screws 47.
- Rod 42 has rigidly fastened at its outer end by a screw 48 a vertically extending bracket 49 having at the upper end thereof a tension spring 50 interconnecting a pin 51 fixed into the plate 46.
- the spring 50 maintains a continual tension urging the roller 44 toward its cam 40.
- At the lower end of the bracket 49 is a cam follo-wer extension rod 52 secured by nuts 53 threaded thereon.
- extension rod 52 The rearwardly extending end of extension rod 52 is formed with teeth as a rack gear 54.
- Cam follower rod 43 is equipped similarly to the rod 42 with a bracket 55 fastened by a screw 56 to its outer end and a tension spring 57 interconnecting a pin 53 xed to the plate 46.
- a second cam follower extension rod 59 (FIG. 3) is connected to the bracket 55 by nuts 60 and a rack gear 61 is formed upon the rearward end of the extension rod 59.
- the extension rod 52 overlies extension rod 59 vertically and each is moved linearly by the rollers 44 and 45.
- a supporting bracket 62 fastened to the control mechanism 20 by screws 63 has a vertically disposed stud 64 extending therethrough (FIG. l).
- a downwardly bent arm 65 is welded to a small gear 66 and both are pivotally held on the stud 64 with the gear 63 meshing with and rotated by the rack gear 54.
- F astened to the arm 65 by a screw 67 is a generally horizontally held thread guide positioner ⁇ 68 which carries at its rearward end the thread guide eye 29.
- a second small gear (not shown) of equal size and meshing with rack gear 61 and it is Welded to another bent arm 69 having, fastened by a screw 70, a second generally horizontally held thread guide positioner 71 which carries at its rearward end the thread guide eye 28.
- the actuating means commencing at the two cams 40 and 41, will provide pivotal movement to the thread guide positioners 68 and 71 individually by moving each between inactive and active positions to be further explained below.
- cams 40 and 41 are identical, and their action upon the thread guide positioners is similar, it is believed necessary to explain the motion produced by only one.
- cam 40 is maintained in contact With the follower roller 44 by the spring 50.
- the cam 40 provides upon each revolution a three-stage movement to the follower in timed relationship with the reciprocating tape 32 as it inserts two picks of filling.
- follower rod 42 and extension rod 50 are moved linearly only, so as to maintain accurate control and the rack gear 54 will pivot the thread guide positioner 68 to proper locations for eicient operation.
- the positioner 68 is movable in a three-location cycle, from an inactive location to a lirst active location where an initial pick of the cycle is presented to the depressor 31 and then to a second active location where the linal pick of the cycle is presented and returned to the inactive position. This cycle may be repeated indefinitely or terminated whenever the inactive position is reached. Either thread guide positioner 68 or 71 may be selected to move through the above cycle and means for effecting the selection will now be explained.
- the patterning device 77 may be one of a number of such known devices, it being necessary only to effect pulling and release actions t the operating wire 76 in time with the cams 40 and 41 and in accordance with any predetermined pattern.
- Two downwardly directed arms 78 and 79 of the lever 73 are each disposed above the heads of two vertically positioned locking bolts 80 and 81 respectively (FIG. 2).
- the bolts 80 and 81 are loosely supported vertically by holes (not shown) in the plate 46.
- the bolt 81 is encircled by a compression spring 82 which bears upon the plate 46 and urges the head of bolt 81 into contact with the arm '79.
- the function of spring 82 is simply to raise the bolt 81 when permitted to do so by the arm 79 being drawn upwardly.
- a stronger compression spring 83 is similarly arranged upon the bolt 80 and, in addition to raising the bolt 80 will also raise arm 78 and pivot the lever 73 so as to depress the bolt 81 when a release signal is received from the patterning device 77.
- a striker channel 84 In the upper surface of the cam follower rod 42 is a striker channel 84 to provide a latch into which the bolt may be pressed and thus lock the rod 42 from further movement.
- the striker channel 84 is indexed below the bolt 80 at the highest rise point of cam 40 and when the thread guide positioner 68 is in the inactive position.
- the cam follower rod 43 has a striker channel 85 in its upper surface which will index similarly with the bolt 81 and when actuated by the arm 79 will assume the position shown in FIG. 2.
- Each of the bolts 80 and 81 is urged upwardly against the lever 73 by its particular compression springs 83 and 82.
- the lever 73 in reciprocating within its pivotal arc will depress one locking bolt and release the other alternately.
- the patterning device is prepared in a manner to activate the lever 73 to lock one cam follower rod 42 or 43 and to release the other for as many cycles as are desired.
- the rotating cams 40 and 41 deliver positive motion to one cam follower at a time to move its particular thread guide positioner to the inactive position.
- the springs 50 and 57 continually bias the thread guide positioners toward active positions with only a selected one being permitted to pivot.
- a filling selective device which comprises (a) a plurality of thread guiding members pivotally supported coaxially, each being adapted to be threaded with lling from a separate one of said sources of supply,
- each one of said guiding members being movable between inactive and active positions
- actuating means individual to each one of said guiding members each including a continually rotating cam and a linearly movable cam follower responsive to said cam
- each of said cam followers having a rack gear portion in meshing relationship with the fixed gear of one of said guiding members
- said restraining means includes a reciprocating lever being adapted to pivot in one direction to lock a first of said guiding members in an inactive position and to release a second of said guiding members, and to pivot in a second direction to lock the said second of said guiding members and to release the -frst of said guiding members.
- said restraining means includes latching means individual to each said cam follower for locking each one of said guiding members in said inactive position.
- said latching means includes a separate striker channel carried upon each of said cam followers, and a locking bolt disposed for being urged into each said channel.
- said restraining means further includes a reciprocating lever being disposed for contact with said locking bolts for alternately urging said locking bolts into said channels.
- each said three-stage movement of said cam followers translates a three-position cycle to one said guiding member when released by said latching means.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US74873268A | 1968-07-30 | 1968-07-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3511284A true US3511284A (en) | 1970-05-12 |
Family
ID=25010682
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US748732A Expired - Lifetime US3511284A (en) | 1968-07-30 | 1968-07-30 | Filling selective device for shuttleless looms |
Country Status (8)
Country | Link |
---|---|
US (1) | US3511284A (fr) |
JP (1) | JPS5013381B1 (fr) |
BE (1) | BE736750A (fr) |
BR (1) | BR6909439D0 (fr) |
CH (1) | CH496831A (fr) |
DE (1) | DE1937792A1 (fr) |
FR (1) | FR2013973A1 (fr) |
GB (1) | GB1257667A (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3610295A (en) * | 1969-05-08 | 1971-10-05 | Fischer George Ltd | Filling mixing motion for shuttleless rapier looms |
US4076054A (en) * | 1975-10-03 | 1978-02-28 | Somet Societa' Meccanica Tessile S.P.A. | Weft presenting device for looms with selective weft feed |
US4382455A (en) * | 1979-12-27 | 1983-05-10 | Sulzer Brothers Limited | Multiple pick system for a weaving machine |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2817367A (en) * | 1953-10-17 | 1957-12-24 | Sulzer Ag | Weaving machine |
US3342220A (en) * | 1964-09-02 | 1967-09-19 | Elitex Zavody Textilniho | Weft changing apparatus |
-
1968
- 1968-07-30 US US748732A patent/US3511284A/en not_active Expired - Lifetime
-
1969
- 1969-05-15 GB GB1257667D patent/GB1257667A/en not_active Expired
- 1969-06-03 BR BR209439/69A patent/BR6909439D0/pt unknown
- 1969-06-26 JP JP44050091A patent/JPS5013381B1/ja active Pending
- 1969-07-25 DE DE19691937792 patent/DE1937792A1/de active Pending
- 1969-07-28 CH CH1147569A patent/CH496831A/de not_active IP Right Cessation
- 1969-07-28 FR FR6925709A patent/FR2013973A1/fr not_active Withdrawn
- 1969-07-29 BE BE736750A patent/BE736750A/fr unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2817367A (en) * | 1953-10-17 | 1957-12-24 | Sulzer Ag | Weaving machine |
US3342220A (en) * | 1964-09-02 | 1967-09-19 | Elitex Zavody Textilniho | Weft changing apparatus |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3610295A (en) * | 1969-05-08 | 1971-10-05 | Fischer George Ltd | Filling mixing motion for shuttleless rapier looms |
US4076054A (en) * | 1975-10-03 | 1978-02-28 | Somet Societa' Meccanica Tessile S.P.A. | Weft presenting device for looms with selective weft feed |
US4382455A (en) * | 1979-12-27 | 1983-05-10 | Sulzer Brothers Limited | Multiple pick system for a weaving machine |
Also Published As
Publication number | Publication date |
---|---|
BR6909439D0 (pt) | 1973-01-11 |
JPS5013381B1 (fr) | 1975-05-19 |
FR2013973A1 (fr) | 1970-04-10 |
CH496831A (de) | 1970-09-30 |
BE736750A (fr) | 1969-09-30 |
GB1257667A (fr) | 1971-12-22 |
DE1937792A1 (de) | 1970-02-05 |
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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: GENERAL ELECTRIC COMPANY P.L.C., THE 1 STANHOPE GA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:RIVERS-LATHAM, PAUL W.;REEL/FRAME:004060/0519 Effective date: 19820910 |
|
AS | Assignment |
Owner name: STANCHART BUSINESS CREDIT, 200 GALLERIA PARKWAY, N Free format text: SECURITY INTEREST;ASSIGNOR:DRAPER CORPORATION;REEL/FRAME:004539/0198 Effective date: 19860328 |
|
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 |