US569749A - pawoett - Google Patents

Description

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(No Model.) s sheetssheen 2. P. B. FAWCEI'T.

JAGQUARD APPARATUS.' No. 569,749. 'Patented Oct. 20, 1896.

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P. B. FAWCBTT. JAGQUARD APARATUS. No. 569,749. l Patented 001;. 20, 1896.

UNITED STATES PATENT EEicE..

FRANCIS B. FAVOETT, OF KIDDERMINSTER, ENGLAND, ASSIGNOR TO GEORGE MATTHIAS VHITTALL, OF SPRING BANK, lVRIBBENI-IALL,

ENGLAND.

JAC QUA R D A PPARATUS.

SPECXFICATION forming part of Letters Patent N o. 569,749, dated October 20, 1896.

Application tiled March 18, 1896. Serial No. 5831687: (No 111041810 To (LZ whom t may concern:

Be it known that I, FRANCIS BEST FAW- CETT, of it Oomberton Road, Kidderminster', in the county of W'orcester, England, have invented certain new and useful Improvements in Jacquard Apparatus Used in Tear ing Brussels and Piled Carpets and other Fabrics, of which the following is a specification.

This invention relates to improvements in Jacquard apparatus employed. in weavin g Brussels and piled carpets or rugs and other fabrics by which a greater number of liftingcords can be operated than heretofore by a given number of needles.- This is accomplished by the rearrangement of the Jacquard apparatus. Thus the holes in the trap-board are all arranged so as to trap all the liftingcords of the face-warps in their normal or quiescent position, the untrapping being effected in all cases by the pressing in of the needles. This modification of the trap-board renders unnecessary the use of coiled springs for returning the needles to their quiescent position, as the drag of the lifting-cords sufficos to move them back so soon as the needles are released from the pressure of the cords. Again, the needles are caused to work (f as hereinafter described) in combination with each other in selected pairs instead of independently, so that each needle is made capable of operating several lifting-cords instead of only one lifting-cord, or at the most two, as heretofore. Thus the scope of the Jacquard apparatus is largely increased with` out increasing its size, and fabrics can be produced having a much greater range of color or effect than is possible by the ordinary method of working the Jacquard apparatus.

In order to make Vclear the full advantages of the invention, I will proceed to explain how I propose to operate upon ten sets of facewvarps, that being the maximum number of face-warps which can be conveniently contained in one dent or split of the reed.

The needles are arranged in vertical rows, there being two groups or sets in each row, each group or set numbering five needles.

The loops or eyes of the two sets of needles stand out, the one from the right-hand side and the other from the left-hand side of the upper and lower groups, respectively.

For the purposes of this invention the trap or lifting board and the top board will have ten holes to each set of iive needles instead of only five or six, as at present, and through each hole is passed a lifting-cord, making ten cords to each set of live needles.

The cords passed through the trap-board are, in their normal position, all trapped, as above stated, and ready to be raised by the lifting-board, the slotted elongation of the holes in the board bein g toward the front of the jacquard. Each Jacquard needle is formed with four loops or long eyes, through which the lifting-cords will pass, and these loops or eyes are so disposed that the pushing back of any three needles in the one group of iive needles will push nine cords out of trap and leave only one cord entrapped. This will be clearly understood by reference to the accompanyin g drawings, wherein-- Figure l shows the Jacquard apparatus in end elevation, partly sectional, the needles, trap-board, and cords beingsuitably arranged for carrying out my invention. Fig. l is a diagram corresponding with Fig. l of the upper group or set of one vertical row of needles, illustrating the operation of those needles. Fig. 2 is a partial plan view of the trap-board.

`Fig. 3 is a partial front elevation of the J acquard apparatus, showing the vertical rows of horizontal needles; and Fig. -i is a plan view of two detached needles belonging, respectively, to the upper and lower sets of one vertical row.

The detached views indicate the mode of distributing the loops on the needles, so that one cord only shall be trapped at a time to secure the requisite lift of the warp-threads to suit the pattern in hand. The order or arrangement, however, of the loops in the needles and the cords may be varied, as will be readily understood when the details to be presently described are fully grasped.

The ve needles comprising the upper group f2 and h in needles Nos. 1 and 3.

or set of one vertical row are marked, (see Figs. 1 and 1%) respectively, 1, 2, 3, 4, and 5, and the five needles comprising the lower set are marked, respectively, 1, 2, 3, 4, and 5u in Fig. 1.

The ten lifting-cords for the upper set of needles are marked, respectively, ly' to bw, and alternating with these are the ten liftingcords marked, respectively, c' to om for the lower set of live needles.

The ten holes in the trap-board for the ten lifting-cords for the upper set of five needles (see Fig. 2) are marked, respectively, d' to d10, and the ten trapboard holes for the ten lifting-cords of the lower set of five needles are marked, respectively, e to ew. For convenience the two sets of ten holes cl to d10 and e to el@ are arranged relatively to each other, as shown in the plan View at Fig. 2.

rlhe loopsin the needles for the lifting-cords are arranged as follows, corresponding with the ten holes rl to d10 of the trap-board: Needle No. 1 has four loops ff2 ffi, corresponding with the first four holes d (Z2 da d4. Needle No. 2 has four loops g g2 g3 g4, corresponding with the rst hole CZ', fifth hole d5, sixth hole CZ, and seventh hole CF. Needle No. 3 has four loops 7L h2 h3 h4, correspondin g with the second hole cl2, fifth hole d5, eighth hole d8, and ninth hole d. Needle No. 4 has four loops t" i2 i3 t, corresponding with the third hole d3, sixth hole t, eighth hole d8, and tenth hole d10. Needle No. 5 has four loops j'j jjl, corresponding with the fourth hole di, seventh hole C17, ninth hole cl, and tenth hole d10.

Arranged in this manner it will be found that, as shown in Fig. 1, the loops in the needles form pairs under each of the ten holes d/ to d10 in the trap-board and that each of the cords b' to Z910 in passing downward through the needles must pass through two loops. For example, the cord b in the first or front hole d of the trap-board passes through the loops f and gin needles Nos. 1 and 2. The cord b2 in the hole (Z2 passes through the loops The cord b3 in the third hole d3 passes through the loops f3 and i in needles Nos. 1 and 4. The cord b4 in the fourth hole d4 passes through the loops f* and j in needles 1 and 5. The cord h5 in the fifth hole df" passes through the loops g2 and h2 in needles 2 and The cord b in the sixth hole ZG passes through the loops g3 andt'in the needles 2 and 4. The cord b? in the seventh hole Z7 passes through the loops g*1 and j? in the needles 2 and 5. The cord bs in the eighth hole d8 passes through the loops h3 and in the needles 3 and 4. The cord D in the ninth hole d passes through the loops h4 and jg in the needles 3 and 5. The cord b1@ in the tenth hole d10 passes through the loops yi4 and j in the needles 4 and 5.

All the cords should lightly touch the front ends of the loops, that is, the left-hand ends in Fig. 1 in the drawings. This can be regulated by properly setting the trap-board and other boards, as is well understood.

In preparing the cards for this arrangement of needles for every cord that is to be raised it is necessary that such holes be stamped in the design-cards A, Fig. l, as will allow the two needles through which such cord passes to remain unmoved while the other needles are being driven into a position to untrap thefnine remaining cords. Thus to raise the first cord Z/in the case described above and shown by Figs. 1 and 1 holes must be stamped opposite the needles Nos. 1 and 2 as the first cord b passes through these two needles. All the other needles, namely, Nos.

`3, 4, and 5, being pushed back, all the other cords, namely, b2 to Z110 in the set of ve needles, will be pushed out of trap, for although No. 1 needle would allow the second cord b2, third cord b3, and fourth cord h4 to remain unmoved these three cords are pushed back by the loops h', 2', and j in the third, fourth, and fifth needles, through which the cords h2, b3, and h4, respectively, also pass. The same remark applies to any other two needles in the jacquard through which a given cord passes. By this means ten variations of the five needles may be secured by allowing them to remain stationary in .the following combinations: first combination, needles Nos. 1 and 2 to remain stationary; second combination,

needles Nos. 1 and 3 to remain stationary; third combination, needles Nos. 1 and 4 to re- 1n ain stationary; fourth combination, needles Nos. 1 and 5 to remain stationary; fth combination, needles Nos. 2 and 3 to remain st-ationary; sixth combination, needles Nos. 2 and 4 to remain stationary; seventh combination,

lneedles llos. 2 and 5 to remain stationary;

eighth combination, needles Nos. 3 and 4 to remain stationary; ninth combination, needles Nos. 3 and 5 to remain stationary; tenth combination, needles Nos. 4 and 5 to remain stationary, and consequently the ten dierent cords b to blo may be actuated by the above combinations of the five needles numbers 1 to 5.

The lower set of five needles 1f 2 3a 4 5, which actuate the ten cords o to C10, have their loops arranged in the same order as the loops in the upper five needles 1, 2, 3, 4, and 5, except that the loops in the lower live needles are, as shown in Fig. 1, placed a little farther from the front ends (that is, the left-hand ends on Fig. 1) of the needles to afford room for the cords c to C10 and to provide for the corresponding holes e to elo, alternating with the cords b to'b10 and holes d to d10 of the trap-board. The loops are also formed upon the opposite side of the needles, as shown at Fig. 4, and the cords c' to om consequently pass downward on the opposite side of the needles to that on which the cords b to Z910 are placed.

It will be evident that without departing IOC IIO

from the nat-u re of this invention the order of the loops on the needles may be varied and yet form the same combination of pairs of loops and secure the saine result-viz., actuating the ten cords by the five needles.

That I claim is- In a Jacquard apparatus, the combination with the lifting-cords, of a trap-board having` its holes adapted to trap all the said cords in their normal or quiescent position, looped needles arranged in vertical rows two groups or sets of not less than five in each row with eaeh loop on each needle forming with one loop on one of the needles above or belenr it in the same set a selected pair through which one of the lifting-cords passes, whereby the pushing back of all the needles in a set save the selected two Will push all the cords of that set save one out of trap, substantially as described.

Dated the 3d dayof March, 1896.

FRANCIS B. FAWCETT.

Vitnesses:

ALBERT WEBB, ARTHUR C. DERRETT.

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