US1697645A

US1697645A - Harness for reed-weaving looms

Info

Publication number: US1697645A
Application number: US132237A
Authority: US
Inventors: George D Goodspeed
Original assignee: HEYWOODWAKEFIELD Co
Current assignee: HEYWOODWAKEFIELD Co
Priority date: 1926-08-28
Filing date: 1926-08-28
Publication date: 1929-01-01
Anticipated expiration: 1946-01-01

Description

Jan. 1, 1929. 1,697,645

G. D. GOODSPEED HARNESS FOR REED WEAVING LOOMS Filed Aug. 28, 1926 2 Sheets-Sheet 1 Jan. 1, 1929.

G. D. GOODSPEED HARNESS FOR REED WEAVING ooms 2 Sheeis-Sheet 2 Filed Aug. 28, 1926

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6, 6 0005 120 A Patented Jan. 1, 1929.

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enonen n. eoonsrnnn, or GARDNER; ivressaonusnrrs, ASSIGNOR1TQ HEYWOODQ WAKEFIELD COMPANY, or BOSTON, massecnusn'rrs, .AICORPORA'IIQN or MASSA- CI-IUSETTS.

HARNESS non REEn-wnavme Looms. I

Application filed August 28, 1926. Serial No. 132,237.

This invention relates to improvements in harness for reed weaving looms and 1t consists in: the matters hereinafter described and more particularly pointed out in the appended claims.

In reed .weaving looms employing a jacquardmechanism for determining the d sposition of the various patterns or designs in the body or" the woven fabric, great difliculty is met with in providing a. harness that will filling strands, due to the large size and great stand up under the action of the warp or strength of the warp or strand used in the weaving-operation, as well as, thenecessary close proximity of the filling strands to each other. The pull of such strands when employed in connection with a harness adapted for ordinary textile weaving, bends the heddles of such a harness so that they become entangled and interfere withone another and render the loom inoperative.

The primary object of the invention is to a provide a harness especially adapted for looms employing large warps or filler strands and in which the heddles are so constructed as to amply withstand the pulling strainofthe filler strands and will always remain straight and'true.

Another obj ect of the invention is to provide a strong and rigid heddle for the harness which may be readily made ata low cost and which cannot twist and bend in, but will free-1 ly slide through the comber which they areused. V 1 A further obj ect'of the invention is to pro vide a heddle made'from flat strip stock disposed e'dgewise in the plane of the warp or filler strands and which includes a suitable bearing sleeve disposed in a similar manner and through which the strand may have a sliding guided movement.

These objects oft-he invention well as boards with 7 others together with the many advantages View through theloom astaken on theline 3-3 of Fig; 1.

one ofthe comber boards showing the disposition of the heddles therein.

Fig. 5 is a perspective View on an enlarged 1 scale of the mid'portion of one of the heddles.

. '55' Fig. 4 is afragmentarytop plan view ot' Fig. 6 is a perspective view illustrating one i of the steps in the making of the improved heddle.

The improve-d harness including the hat dies is herein shown and will be herein described "asembodied in a loom of the picker stick type but this is to be considered as by to do so. Referring now in detail to that embodiment of the mvention illustrated in the accompany ing drawings, 1 was indicate respectivelythe side frame members otia loom, which are sultably connected together in the desired culiar characteristics make it of advantage spaced relation. At that end ofthe'loom which maybe termed the rear end is jour nalled a group of" transversely extending gulde and tension rolls 3, 4t and5 respectively,-about which a plurality of warp orfiller strands 6 of fibre reed are trained from supply reels not shown. As said warp orfiller' strands pass about said rolls, they are in close side by side engagement and extend forward ly from the guide rolls to pass through my lmprovedharness indicated as a whole at 7- arranged between upright extensions 88 of the side'frame members 1 and2 respec: tively. Y 9 y The harness includes transversely extend- 111g top, bottom and intermediate comber boards 9, 10and 11 respectively and between said bottom and intermediate comber boards is a plurality of heddle bars 12. Each heddle is in the form of a flat rod or bar 13 arranged edgewise in the planes of the strands, and i said heddles have: sliding guiding bearing in suitable; openings provided therefor in the intermediate and bottom comber boards.

Preferably, said comber boards'are of metal and the bearing openingstherein forsaid heddles'are of a form corresponding to the cross section-of said heddles so'that the same may freely slide therethrough without per mitting a twisting therein. In each bar substantially midway between the ends thereof, there is formed in the plane of the edges of the bar an opening 14 for thepassage of a filler strand therethrough. I find a convenientway to provide said opening, which is substantially of a diameter equalling the i thickness of the bar by forming said open ing in a sleeve 15 and aflixing the portions 18**-13 of the bar thereto in any suitable manner. In Fig. 6 I have shown the bar parts 13.13 and sleeve 15 in spaced relation asthey appear in position of assembly and ready for attachment together preferably by welding or brazing. It is pointed out that both ends of the opening 14 in said sleeve are flared outwardly so that no rough edges are presented to the associated strand as it passes through said sleeve, thus eliminating roughing of strands and drag due to friction thereon.

The heddles each of which has a transverse hole through its top and bottom ends, are disposed in parallel rows, arranged at an angle to the medium plane of the loom as best shown in Fig. 4. Adjacent filler strands are threaded through the'bearing openings of the heddles in each angular row of heddles whereby the close side by side arrangement of the strands are maintained in their passage through the harness.

The harness is actuated to control the shed formation of the strands by a jacquard mechanism 16 located above the loom as best shown Thehooks are connected to a griife 20 to which a rising and vfalling movement is imparted in any suitable manner, and at each rise and fall the associated neck cords or group of cords is actuated to impart a similar movement to the heddles to whichthey are connected. The jacquard mechanism acts to lift a the heddles upwardly, while a weight 21 openatively connected to the bottom end of each heddle permits them to return to their lowermost position by gravity.

'Forwardly of the harhess is a longitudinally reciprocating beam 22 which carries a reed 23. Said reed includes the usual open frame in which are located the usual closely spaced dents 24 between which the strands pass in. said closel" engaged relation. As shown herein 'sai' beam is mounted upon the top ends of said arms 25-25 the" bottom ends of Forward and rearward reciprocating movement is imparted to the beam as'follows :'30 indicates the main drive shaft of the loom which extends transversely of the loom and is journalled in the side frame members '1' and 2 respectively. Fixed to said shaft be tween the side frame members is a cam member 31 having a cam groove 32. Operatively engaged on said shaft adjacent said cam 18 the forkedrear end of an arm 33 having a roller 33' engaged in the cam groove. The forward end of said arm is connected to a rod.

34 extending between and connecting the arms '25. of the beam together. In the rotation of p the drive shaft, the cam will, through the arm impart the desired movement to the beam with a dwell or momentary rest when the beam isin its normal rearward position.

Fixed on the end of the feed roll shaft'2 7 is a ratchet wheel 35 and loose on said shaft isan arm 36. Mounted on said arm is a pawl 37 operatively engaged with a ratchet wheel and connecting one of the beam arms 25 and said arm 36 is a link 38. Thus in each rearward movement of the beam after it has beaten home a stake, a step by step rotative movement is imparted to the feed roll. On

the opposite end of the feed'roll shaft is a pulley 39 and a belt 40 is trained about said pulley 39 and about another pulley 41 fixed to the end of the take up roll shaft 29*. By

means of this belt the finished fabric wound upon the take'up' roll as it isformed.

42 indicates a raceway member which extends laterally from and is fixed at one end to the side member 2 of the frame in substantially the plane of the beam 22 when it is in its normal position of rest. The other end of said raceway member is supported upon the top end of a standard 43 spaced laterally from the frame member 2. Slidable in said raceway is a shuttle block 44 and mounted on said block is the outer end of a gripper arm 45.

The inner end of said gripper arm carries one of a number of stakes 6* arranged in a magazine 47 as best shown inFi'g. 3. When the grip-per arm moves in the other d-irection, after having pinched onto a stake, said stakeis drawn through the shed and then re- 4 leased after which the reed moves forward and locates the same'in place. Thus in each pick of the gripper arm a stake is removed.

from the magazine and inserted into the shed and after being positioned is locked in place by a reversal of the shed in the manner well known.

The gripper arm is connected by a link 48 to the top end of an arm 49 pivoted at its bottom.

end to the standard 43 as shown in Fig. 3. Swinging movement is imparted to the arm by means of a suitable link motion indicated as a whole by the numeral 50 and operatively connected up with gearing 51 driven from the a drive shaft 30 all as best shown in Fig. 3.

The improved harness set forth as embodied in the loom above described has many advantages. The heddles thereof are strong and rigid and amply withstand the strain imposed upon them in use, without bending and without the usual entanglement.

While in describing my invention, I have referred to certain details of mechanical construction as well as form and arrangement of the parts thereof, I do not wish to be limited thereto except as may be pointed out in the below said bottom boards, each heddle having an eye between its ends for the passage of a strand member therethrough.

2. A harness for a loom embodying therein comber boards, heddles each comprising a flat bar having sliding bearing 1n said comber boards and each heddle having a centrallydisposed warp eye therein between its ends for the passage of a strand, said opening being disposed in the plane of but midway between the sides of the heddle.

3. A harness for a loom embodying therein comber boards, heddles each comprising a flat bar having sliding bearing in said comber boards and each heddle having a thickened part at a point between its ends'with a warp eye therein, disposed in the plane of the sides of said heddle. Y I I 4,. A harness for a loom embodying therein comber boards, heddles each comprisinga fiat bar having sliding bearing in said comber boards and each heddle having a thickened part at apoint between its ends with a warp eye therein, disposed in the plane of the sides of saidheddle, the ends of said opening being flared outwardly.

5. A heddle comprising a flat bar'having transverse openings at each end to receive neck cords and lingoes respectively, and a sleeve at a point between said ends, there being a warp eye in said sleeve arranged in the plane of the sides of said bar.

6. Themethod of making a heddlewhich consists in providing a sleeve with a warp eye opening therein and two fiat bar members and in securing an end of each bar member to opposite side of said sleeve and in alignment witheach other and with the edgewise plane of said bars parallel with the warp eye opening in said sleeve. I,

In testimony whereof, I have hereunto set my hand, this 24th day of August, 1926.

GEORGE n. eoonsrnnn