US814337A - Jacquard mechanism. - Google Patents

Description

No. 814,337 PATENTES MAR. 6, QGB. C. VURWERK. AGQUARD MEGHANISM. APPLIGHXGEHLEBQUTJ,1903.

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Specification of Letters Patent.

Patented March 6, 1906.

application led October 5, 190B. Serial No. 1?5,74B.

To all whom it may concern:

Beit known that I, CARL VosWEnK, a subject ofthe German Emperor, residing at Barmen, in the Rhine Province, Prussia, VGermany, have invented certain new and useful Im rovements in Jacquard Mechanism, of which the following is a specification accompanied by drawings.

This invention relates to jacquard mechanisrn enabling the figuring Warp-threads to be lifted or lowered at each card the varying distances required to bring the proper yarns in line in accordance with the pattern to be produced.

The objects of the invention are to improve upon the construction of the same mechanism yandincrease the efliciency of the ap aratus.

urther objects of the invention will hereinafter appear; and to these ends the invention consists of apparatus `for carrying out the above objects embodying the features of construction, combinations of elements, and arrangement of parts havin the eneral Inode oi o eration substantiaglly as creinafter fullyV escribed and claimed in this specifloat-ien and shown in the accompanying draw-V in s, in Whichigure 1 is a side elevation, partly in section, of the improved jacquard mechanism constructed in accordance with this invention. Fig. 2 is an edge view of the improved peg-stri? Fig. 3 is a side view of the egstnp. ig. 4 is an enlarged detail `'bro en face view of the needle-plate.

In the jacquard ap aratus hitherto employed the needles pus 'ng the pegs against the strips or bars for liftin the ile-yarn carriers are arranged more orless obli uely relatively to a horizontal line, as the istance of the egs from each other must necessaril be muc greater than that of the needles om each other in the late facing the patterncards. There are 'sadvantages in this oblique arrangement, for the needles do not move easil enough, which results in much trouble an loss of time. In order to obviate these 4disadvantages accordin to this invention, the needles are dispose horizontally, a splingless Vset 12 with a spring set 13, and each splingless needle 12 is connected with a vertical needle 14. These vertical needles 14 can be very thin and numerous and arranged very closely together, thus allowing the use of relatively thin, small, manageable, and cheap aper cards and affording provision for tlie use of many Hframes or colors, (independent colors,) if desired, up to as many as thirty-three in this instance, Whereas the mechanism hitherto used does not afford provision for substantially more than eleven. The pegstrips 15 are equal in number to the yarn-carriers which are suitably suspended to them, as by means of Wires, so that every lift given to a peg-strip is imparted to the corresponding yarn-carrier. The peg-strips 15 are guide y top and bottom comb-frames 16 and 17,

stop-pieces 18 preventing them from dropping too low. Every strip 15 is provided Wit as many holes as the yarn-carriers, and also the distance of the holes from each other is exactly the same as that ci the holes in the yarn-carriers. ln the holes of the strips are fitted movable pegs 19. Gppcsite every peg 19 is a horizontal needle 13, guided by the plates 20, 21, and 22. These needles have small bosses 23 and spiral springs 24.

O posits the needles 13 and corresponding to tliem in number are the needles 12 With heads 25. Every such needle passes throu h the guidelate 26 and through the eye of tlie correspon ing vertical needle 14. These vertical needles are guided by the top frame 2'? and bottom frame 28. Below these needles 14 is a card-cylinder cariin and movinv the design-cards. Facing t e ee ends o the horizontal needles is a pushing-grate 30 With the usher-rules 31, which grate has a for- War and backward movement actuated by any suitable means. At the opposite side, facing the ends of the pegs 19, is a pushingplate 32, which also has a forward and back- Ward movement imparted thereto by any suitable means, and adfacent to the stri s 15 isa lifting-bar 33, Whic has an up and own motion imparted thereto.

The needles 12 and 14,V the plates 22, and the pushers 31 for-m the pitch-reducing device, as shown in United States Patent No. 346,87?, granted Au st 3, 1836, to Jules Verdol, for a jacquar machine, and the ac- ICO tuating apparatus illustrated in that patent is one suitable form of operative actuating mechanismfor the parts mentioned, althou h any other suitable operative means may Iie provided.

The operation of the apparatus is as follows: The card-cylinder 29, guide-bar 28, and the readjusting-plate above the top guideplate 27 are raised together, whereby in each row of needles corresponding to one pegstrip all but one of the needles are pressed u ward by blanks or imperforated portions ofD the cards, the remaining needle of each row being that which corresponds with the color indicated b the design and for which, therefore, a hole had to be stamped into the card, so that the needle can enter the corresponding hole of the cylinder-plate, and thus remain stationary. Each vertical needle 14 being pressed upward raises the free end of its corresponding horizontal needle 12 to such a height that this end clears the vertical side of the usher-rule 30, whereas the horizontal need es 12 of those vertical needles 14 not pressed back, but which have entered the holes, remain in their position. The ushinggrate 30 is then moved forwar and pushes the latter needles against their corres onding spring-needles, and these push back t 1e egs 19 against the strips 15, from which all t e pegs are projecting at first toward the plate 20, so that these egs, one for every strip, now project beyon the opposite side of the strips. The card-cylinder 29, guide-bar 28, the readjusting-plate above the top guideplate 27, and the pushing-grate 30 are now returned, so that those vertical needles which were pushed upward drop back or are forcibly replaced in their former position. Those horizontal needles 12 which were pushed forward are returned by the readjusting-plate 22, While the correspondin horizontal needles 13 are pressed back to t eir rst position under the action of the spiral springs 24 or are forcibly returned by a readjusting-plate. Then the lifting-barBS is raised to the position 33, and in its movement it catches the one projecting peg of every strip, thus lifting the strips to an extent equal to one or more holes, according to the articular eg that projects as previously se ected by t e card, and the corresponding yarn-carriers are lifted thereby to the same extent to bring their pile-threads into the horizontal line at which the gri perpoints act. Then the loom goes throug various movements, the lifting-bar 33 and the strips 15 are allowed to come down to their former position, and the pushing-plate 32 moves against the strips and pushes the selected pegs back, so that all the pegs are rojecting again at the side toward the nee les,

as represented in Fig. 1, ready for the next action after the ret,urn of the pushing-plate 32.

The peg-strips hitherto used hav(` been provided with simple pegs with heads at one side and were freely movable. This, however, entails the drawback that the pegs are liable to be shaken back and forth. by vibration when the loom is running, whereby the pegs are damaged by the lifting-bar 33, Fig. 1 which consequently dama res the strips and needles, and, furthermore, t e yarn-carriers, the fabric, and the cards. In order to remedy these defects, I employ means for effecting a brake or frictional action upon the 'pegs-as, for example, by means of springs 36, Fig. 3, which are fixed in the recesses of the strips. Collars 35 in this instance revent the pegs from movin too far. Anot er improvement consists in t e means for removin the single s ring-needles 13 out of the need e-plate 21,

ig. 1. Great trouble has hitherto been found in removin such a needle when injured by bending. It as always been necessary to remove all of the needles up to the one which has been bent before the bent needle could be grip ed. To obviate such an inconvenience, provide in the plate 21 additional holes between the small holes for the needles, said additional holes being large enough to permit the collars on the needles to pass through, and the arrangement is such that through each of these additional holes two needles of the row above and two needles of the row below can be removed, it only being necessary to irst remove the ushinggrate 30, the needles 12 and 14, and t e guideplates 22 and 26, and this can readily be done all at the same time, as these parts are conne cted in such manner as to form one piece.

Obviously some features of this invention may be used without others, and the invention may b'e embodied in widely-varying forms.

Therefore, without limiting myself to the construction shown and described nor enumerating equivalents, I claim, and desire to obtain by Letters Patent, the following:

1. In a jacquard mechanism, the combination with peg-strips rovided with movable pegs, of correspon ing straight parallel spring-needles, corresponding straight parallel springless needles, and vertical needles each operating in conjunction with one of the horizontal springless needles and corresponding to one hole in the card-cylinder, for substantially the purposes set forth.

2. In a jacquard mechanism, the combination with pe -strips and movable pegs a set of horizonta needles and a set of vertical needles connected to operate in conjunction therewith and being controlled by the pat- IOO IIO

tern-cards, of e second set of horizont-s neeprovided with Vapertures for removing the dies opposite the pegs of the eg-strps, for spring-needesololtof theneed1es-case ,forsub substantially the purposes set orth. y stantelly the purposes set forth.

3. 1n jacquard meohenislmthe combine- In Ytestimony whereof I have signed this 5 tion of peg-strips provided with movable spee'feetion in the presence of two subseribl5 egs, and means 'for preventing these pegs ing Witnesses.

rom shaking back end forth under Vibration, CARL VORVVERK. for substautlally the purposes set forth. Witnesses:

4. In a jacquard mechanism, the oombina- QTTo KNIG,

Io tion with the sprng-needes, of e guide-plate J. A. RITTERSHAUS.

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