US1719476A - Jacquard-loom harness - Google Patents

Description

July 2, 1929. .1. J. KAUFMANN JACQUARD LOOM HARNESS 2 sheets-sheet 2 l JWM, Jcolu f2@ Filed June 10, 1927 Patented July 2, 1929.

UNITED STATES 4PMENT orifice.

JOHN yJACOIB KAUFMANN, OF ELKINS PARK, PENNSYLVANIA, ASSIGNOR TO STEEL HEDDLE MANUFACTURING COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A COR- PORATION OF PENNSYLVANIA.

JACQUARD-LOOM HARNESS.

My invention relates to Jacquard loom harness, and it has particular relation to such harness employing heddles made of thin, flat strips of metal or wire. v

The principal object of my invention is to provide in a Jacquard loom harness means for preventing twisting of the heddles, tothe end that` the warp ends will run more 'freely through the eyes of the heddles, thereby insuring greater freedom ofmovement in the shedding, as Well as reducing breakage of the warp ends.

Heretofore, in the employment of heddles made of thin, flat strips of metal or wire in4 Jacquard loom harness, one of the principal difficulties encountered has been that when twisting of the heddles occurred andthewarp ends would be wound around the hed'- dles at the eye port-ion, the warp ends would not readily 4untwist the heddles, due to the shape of the same, but would bind at the eye portion, and the shedding and the feed would not be free. On account of the increased tension on thewarp ends caused as aforesaid breakages `would frequently occur.

It is well known that no matter how carefullythe harness is originally mounted, a

certain amount of twisting of the heddles constant-ly occurs, principally by reason of atmospheric changes, causing the cords which extend from the heddles to the jacquard mechanism to twist in one direction or the other from time to time. In the use of heddles of round cross-section, the tension of the warp ends will ordinarily be sufficient to untwist the heddles and permit the warp ends to pass freely through the eyes thereof.

However, in the use of jacquard heddles made of thin, flat strips of metal or wire, the untwisting will not take place as readily as where the common types of round heddles are used, and consequently, notwithstanding the other advantages of the heddles made of thin flat metal or wire, the same have not heretofore been generally used, as might have been the case had the same not been open to the objection above referred to.

My present invention contemplates the provision of means for preventing the twisting of jacquard heddles made of thin, flatA metal or wire, whereby the same may beadvantageously used in Jacquard loom harness.

The nature and characteristic features of my invention will be more readily under- .stood from the following description, taken in connection with the accompanying drawings forming part hereof, in which:

Figure 1 is a front elevation of a Jacquard loom harness embodying the main features y of my present invention;

Fig. 2 is a side elevation thereof, certain parts being shown in section;

Fig. 3 is a perspective view of a portion of means for supporting one end of a rod constituting one of the principal parts of the present invention and for impart-ing tension thereto; and i Fig. t is a similar view ofnieans for supporting' the other end of said rod.

Referring to the drawings, in the particular embodiment of my invention therein shown, 10 is the comberboard commonly used in Jacquard looms, through which comberboard the control cords 11 extend from the jacquard mechanism to the upper ends of heddles 12, the cords 11 being tied to the eyes 13 provided at the upper ends of the iiidividual heddles in the customary manner. The usual lingoes 14 are mounted atthe respective lower ends of the heddles 12 in the customary manner, by beingrhooked in the eyes -15 thereof. The rheddles are provided intermediate their ends with the usual warp eyes 16 for the passage .of the warp ends therethrough and each of the heddles is provided, between the warp eye 16 and the eye 13 for attaching the cord to the upper end of the hed'dle, with a longitudinal slot 17.

As is well known, the comberboard 10 isf provided with a series of apertures 18, through which the control cords 11 pass, these apertures -18 being arranged in parallel groups,.so that the heddles supported from the cords 11 will be correspondingly arranged in parallel groups below the comberboard.

For each of the parallel groups of heddles there is provided a flat bar 19. which passes through the slots 17 of the heddles arranged in the corresponding parallel group.

The bars 19 are supported in the loom in any'preferred manner,'so as to be properlyv positioned. The preferred means for supportingbars 19 comprises the provision of a plurality of brackets 20, each having a slot CFI 21 through which one end of a bar 19 extends, a butt-on 22 being carried on the end oi' the bar 19 to prevent the end of the bar `19 from being withdrawn from the slot 21. The brackets 20 are adjustably mounted on rods 23, supported below one end of the comberboard 10 by means of brackets 24, which are preferably 'attached to the comberboard by means of bolts 25. In Order to prevent the rods 23 from turning with respectto the brackets 24, the ends of the rods 23 are tiattened as at 2G, at the points .of attachment to the brackets 24.

The. other ends of the bars 19 extend through: slots 27 of brackets`28. 'The end of the'bar- 19 is provided with a pin 29, which'is engaged by the forked end of a spring 30, which spring. has its other end attached by means of a bolt 31totlie'lowerend `of the bracket'28. In this manner, the tension of the spring 30 is imparted tothe rod 19.4 The brackets 28 are adjustably-mounted on a rod 32, the ends of which aretiattened as at 33, and secured to thefend of the comberboard 10 byimeansof bolts 35.

The brackets20are adjustably secured to the rods 23 by meansof'encircling portions 36 and bolts 37, which serve to clamp the brackets 20 atfdesiredialoc-ations onV the rods 23, and likewise -the brackets -28 are secured to the rods 32 by encircling `portions 3S and bolts 39, which serve'to clamp the brackets 28 at'desiredilocationson the rods 32.

It will be notedthat the slot 17 in each of the heddles 12 is of suiiicient longitudinal eX- tent to permitthe shedding of the heddles,-

and that `the bars 19 passing throughsaid slots 17 will effectively serve to prevent twisting of the 'heddles, sothat the warp eye will at all times beproperly disposed 'for the free movement of the warp therethrough; -Y

It will also be noted that, by the provision of the shiftable brackets 2O and 28, whichsupport thevbars=19, provision is made 'for the mounting oi the same at the proper locations to meet the varying arrangements 'of the apertures 18 inthe comberboard which are found in practice.

It will beseen that there 'is thus provided a simple and eflieient meanso't' prevent-ing twisting of jacquard heddles which are made of thin, Hatstrips'ot metal oi=wire, whereby one of theprincipal ditiiculties `encountered in the use of thesame is effectively overcome.

Having thus describedthenatuie and characteristic `features of `my1'inventiora what I claim as new and ,desire to secure by Letters Patent, is

1. Inl a J acquardloom harness, thecoinbi nation with a comberboard and Athe cords passingtherethrouglncf heddles made of thin flatl metal or wireeach having a warp eyeinterm-ediate its ends for the passage ot the warp therethroughand each having a longitudinal slot' between 4the warp eye and one end of the heddle, a bar extending thiough the lieddle slots, and means for imparting tension to said bar.

2. In a Jacquard loom harness, the combination with a coinberboard and the cords passing therethrough, ot heddles -made of thin Hat metal or wire each having a warp eye intermediate its ends for the passageV of the warp ther-ethi'oughand each having a longitudinal slot between the warp eye and one end of the heddle, a plurality of bars passing through the slots in the heddles, and means for imparting tension to said bars individually.

3. In a Jacquard loom harness, the combi,-

the warp'therethrough and each having a lon-` `550 -nation'with a comberboard and the cords i gitudinal slot between the warp eye and one i end of the heddle, barssuspended below the.

comberboard and passing through the slots in the heddles, andl means for supporting said f bars comprising brackets mounted at each end of the comberboard, yrods supported by said brackets, and brackets mounted on said.'y

rods for individually supporting theends of the bars.

4. In a Jacquard loom` harness, thefcombination with a comberboard :and the cords passing therethrough, of heddles made ot thin iiat metal or wire each having a warp eye intermediate its ends ttor the passage otthe warp therethrough and each having-a longitudinal slot between the warp eye and one end of the heddle, barssuspended below the comberboaid and passing through-the.

slots in the heddles, and means :tor support ing said bars comprising brackets mounted at each end oct the combei'board, rods sup-V ported by said brackets, and bracket-s ad]ustV ably mounted on said rods having slots through which the ends of the bars extend. 5. In a Jacquard loom'harness, the combination with a comberboard and the cords passing therethrough, of heddles made `of thin flat metal or wire each having a warp eye intermediateits ends for the passagerof the warp therethrough and yeach having a longitudinal slot between the warp eye and one end of Vthe heddle, `bars suspendedibelow the comberboard and passing through the slotsin theheddles, and means for supporting said bars comprising brackets mounted` at each end of the coinbciboard, rods'supported by said brackets, brackets adJustabiy mounted on said rods having slots throughwhich the ends of the bars extend, and the' brackets at one end of the bars having means for imparting tension thereto.-

6. Ina Jacquard loonrharness, thecombilll) nation with a coinberboard and the cords i passing therethrough, ot heddles made-of thin fiat matelot Wire each liavinga warp eye intermediate its ends for the passage of the Warp therethrough and each having a longitudinal slot between the warp eye and one end ot the heddle, bars suspended below the comberboard and passing through the slots in the heddles, and means for supporting said bars comprising brackets mounted at each end of the comberboard, rods supported by said brackets, brackets adjustably mounted on said rods having slots tl'irough which the ends of the bars extend, and the brackets at one end of the bars having means for imparting tension thereto comprising springs carried by the brackets and engaging the bars.

In testimony whereof, I have hereunto signed my name. Y

JOHN JACOB KAUFMANN.

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