US497022A - Jacquard mechanism for looms - Google Patents

Description

(o Model.)

H. HAR'DWIGK. JAGQUARD M'E'GHANISM FOR LOOMS.

PatentedMayQ, 1893.l

UNITED STATES PATENT OFFICE.

HARRY HARDWICK, OF THOMPSONVILLE, ASSIGNOR TO THE HARTFORD` CARPET COMPANY, OF HARTFORD, CONNECTICUT.

JACQUARD MECHANIISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 497,022, dated May 9, 1893.

Serial No. 393,267. (No model.)

To all whom it may concern:

Be itknown that LHARRY HARDWICIQacitizen of the United States, residing at Thompsonville, in the county of Hartford, State of Connecticut, have invented a certain new and useful Improvement in Jacquard Mechanism for Looms; and I do hereby declare the following to be a clear and exact description thereof, reference being had to the accompanying drawing, which forms a part hereof.

The invention relates to double-acting lifter-board looms, such as are used for Weaving ingrain carpet fabrics, and it consists of v certain improvements, herein described and claimed, in the construction of such looms, such improvements having particular reference to the weaving of fabrics with repetitions of the pattern in the width of the fabric, either repetitions in reverse or repetitions not in reverse.

In weaving many fabrics such as rugs, dac., it is often desirable to have the pattern of one part of the width an exact counterpart of the pattern of another part of the width in places, as, for instance, for the center, and at the j same time to have in other places the pattern of one part of the width an exact counterpart (but now in reverse) ot' the pattern of another and corresponding part of the width, as, for instance, for the border. Heretofore in weaving such a fabric upon a loom of the class before referred to one of the two methods has been ordinarily employed. By one of these methods two or more leashes (as many as there are to be repetitions of the pattern in the width) are tied to each tail of the jacquard. Each leash carries a separate mail and so governs a separate warp thread. Each tail of the jacquard is controlled by a separate needle. The objection to this method, however, is that on account of having to cross the harness from left to right or from right to leftY of the loom it has been supposed that only one lifter board in the jacquard could be used and only one has been used to raise any given Warp thread. This necessitated a slow operation of the loom and more power was required to operate the jacquard and there was more wear on the harness and on the warp. By the other method two lifter boards are used in the jacquard; each needle has two eyes, one under each lifterboard, and controls two tails, one running through one lifter board and the other running through the other lifter board. Each tail has but one leash tied to it; and the two leashes, which are, through their respective tails, controlled by one needle, are crossed from front to rear or from rear to front of the loom and tied together at the bottom and together they carry one mail and so one warp thread. The lifter boards are operated alternately and thus the loom can be run faster and more economically than by the method first described. The objection to this method, however, is that on account of having crossed the leashes from front to rear or from rear to front of the loom it was supposed that they could not be, and they were not, also crossed from right to left or from left to right of the loom; and thus double (or triple or quadruple, die., depending upon the number of repetitions of the pattern in the width) the number of needles and tails are required, for there must be a separate needle and a separate tail for each separate mail and so for each separate Warp thread in the web; and double the number of leashes are required for there must be two leashes for each mail; and double or triple or quadruple the amount of card cutting is required, as the number of needles is increased. I dispense with both of these methods and overcome the objections to each of them in my improvement in loom mechanism forming the subject of this patent.

The accompanying drawing illustrates a machine embodying my invention.

A and B represent the two lifter boards of a double lifter board jacquard and C represents the fixed board above them. These lifter boards of the reversely arranged slots usual in such looms are provided in any well known way with mechanism for raising them alternately.

D is one of the needles. It is operated upon each pick of the loom by suitable cards and card-operating mechanism. Each needle D has two eyes, as shown, one under one lifter board A and the other under the other lifter board B. Through one eye of each needleis passed one tail, 5, which also passes through and is adapted in any well known way to be IOC raised by the lifter board A; and through the other eye passes another tail, 6, which also passes through and is similarly adapted to be raised by the lifter board B. The needle D, under the dictation of the cards, determines at each pick ot the loom whether the tail that passes through the lifter board that rises to form the shed for that pick shall be raised by that lifter board or shall be left down. The tail 5 carries two or more leashes l, 2, (depending upon the number of times the pattern is to be repeated in the width) and the tail 6 carries a corresponding number of leashes 3, 4. These leashes l and 2 iirst cross the loom sidewise from right to left and from left to right above the intermediate fixed guide board E, and the same way with the leashes 3 and 4.

The particular crossing illustrated in the drawing would repeat the pattern once in the width of the goods, and not in reverse.` This crossing may if desired be arranged to repeat the pattern in reverse, or it may be arranged a part of the harness on one way and a part in the other way. Below the said guide board the leashes l and 3 cross lengthwise of the loom from front to rear and from rear to front of the loom and are tied together and together they carry (through `a suitable middle piece 7 passing through the lower fixed guide board F) the mail Gr and the warp thread which passes through that mail. Similarly the leashes 2 and 4 below the guide board E cross lengthwise of the loom from front to rear and from rear to front of the loom and are tied together and together they carry (through the middle piece 8) the mail H and the warp thread that passes through that p mail. This second crossing below the intermediate lifter board E brings each warp thread under the control of each lifter board as dictated by the one needle corresponding to that warp thread. Thus two or more mails, and so two or more warp threads in the width 1 ot the fabric, are operated together in the1 weaving, and to that end may be controlled by one and the same needle and are adapted under the control of that needle to be operated by both lifter boards in turn. Thus by my improved loom mechanism I attain the rapid speed of one of the two old methods but with a less number of needles and tails and leashes and with less card cutting, and I attain the economy in needles, &c., of the other method but with much more rapid speed and much smoother working and less wear upon the harness and warp.

It is obvious that the operation of the weaving mechanism will be exactly the same it several needles with single eyes were used or if every needle had one eye, the number of needles corresponding to the number of tails. The construction employing needles having two eyes each, one eye Linder each lit ter board, however, embodies my complete invention.

My improved loom mechanism is well adapted to produce effects in double-faced fabrics not heretofore produced.

I do not herein claim broadly the construction in any double-acting loom by which both lateral and longitudinal tying up are effected; but by my improvements I am enabled to economically tie up a double-acting lifterboard loom so as to obtain many substantial advantages as above indicated.

What I claim as new, and desire to secure alternately, and needles having two eyes each,

one eye under one lifter board and the other eye under the other litter board, with a lixed guide board, and two or more leashes for each tail crossed sidewise of the loom above such fixed guide board and crossed lengthwise ot the loom below such iiXed' guide board.

HARRY HARDWICK.

Vitnesses:

II. L. VIETTs, WILLIS GowDY.

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