US774610A - Jacquard apparatus. - Google Patents

Description

PAT'ENTED NOV. 8, 1904.

B. S. SMITH;

JACQUARD APPARATUS.

APPLICATION FILED JULY 23, 1903.-

N0 MODEL.

Patented November 8, 1904:.

PATENT @Tricn.

BENJAMIN SINCLAIR SMITH, OF PAISLEY, SCOTLAND.

JACQUARD APPARATUS.

SPECIFICATION forming par of Le r Pa en N 774,610, dated November 8, 1904.

Application filed July 28, 1903- Serial No. 167,346. (No model.)

To all whom, it may concern.-

Be it known that I, BENJAMIN SINCLAIR SMITH, a subject of the King of the United Kingdom of Great Britain and Ireland, residing at Stonefleld Mills, Paisley, Renfrewshire, Scotland, have invented certain new and useful Improvements in Jacquard Apparatus for Looms, of which the following is a specification.

This invention relates to jacquard apparatus for looms, adapted to so manipulate the warps in a loom for weaving pile fabrics that a double fabric is formed comprising two carpets woven face to face in which the pile-warps pass from the upper cloth to the lower cloth, as required by the design, and when not required are floated between the fabrics.

The invention resides more especially in the disposition of the knots relative to the boards and in the arrangement of the boards for lifting, retaining, and lowering the knotted cords connected to the warps, there be ing provided a stationary board to hold up the lower series of knots, so that the warps connected to the cords are in a floating position, an intermediate lift-board which lifts the upper knots of the selected cords and retains them momentarily in raised position, so as to raise the corresponding warp-threads to the top cloth, to be there woven, and a top lift-board which is lowered to allow the lower knots of the cords not selected to rest on the bottom board, while on the intermediate board descending the, selected cords are lowered to lower the warps connected thereto to the bottom cloth and are again lifted to the floating position when the top board is raised.

The invention is illustrated in the accompanying drawings, inwhich Figure 1 shows the improved jacquard in diagrammatic form, the details of the apparatus being omitted. Fig. 2 is a diagram showing the lifting-boards and the knotted cords in different positions.- Fig. 3 shows a cross-section of the fabric produced in which a is the top cloth and b is the bottom cloth, while 0 represents the weft-shots in each interwoven with the warp-threads d, which threads (Z cross from the top cloth to the bottom cloth, and vice versa, and which threads when not required for the design float between the cloths, the said warps being severed subsequent to the weaving operation in order to form two carpets, one from the top cloth a and the other from the bottom cloth I). Fig. 4 is a detail view showing the liftingboards. a

The improved jacquard as regards the so raise the cords 2' that the bottom knots t" are all above the stationary board it, through which board it pass the-cords to the usual mails in the warps below. In this position the card on the card-cylinder f is pressed into contact with the ends of the needles g, so as to act on certain of said needles according to the pattern and to deflect the corresponding cords. The jacquard lift board Z is then raised to the position shown in Fig. 1, lifting with it, by the knots 6 the cords 2', that have been selected by the card on the cardcylinder f, up to the full-lift, so that the pilewarps attached to said cords are raised to the back of the top cloth a in the loom. While the lift-board Z so retains these warps, the top lift-board it is lowered, leaving the cords t' andknots i" not selected by the card on the stationary board it, the pile-warps attached to these cords being heldfloating between the top cloth and the bottom cloth in the manner indicated at Fig. 3. This completes the first cycle of operations. In the second cycle the jacquard lift-boardZ is lowered so that the selected cords, with the knots 11 which had raised the selected pile warps to the top cloth, are lowered, together with the corresponding knots f, as indicated at Fig. 2, to lowerthese warps down to the bottom cloth, in which they are woven. For this purpose the tails a and m in the boards Z and 76, respectively, run in opposite directions. WVhen this has taken place, the top lift-board it is raised so as to bring all the pile-warps to float midway be tween the two cloths a and b, and all the knots z" are raised above the stationary board 71;, while the knots d are all hanging in position ready for repeating the first cycle of operations, when a fresh card on the cylinder f is brought to act on the needles and the lift-board Z is raised.

The difference between the present jacquard apparatus and those heretofore known is realized partly from the feature that under this invention the warps not selected by the loom float between the top and bottom cloths, both of which are woven as pile carpets figured on both sides. Such a fabric figured on both sides is of quality resembling that of the usual hand-tufted carpet, while in the manufacture, on account of the figure showing on the upper face of the top cloth, the weaver can readily discern whether any of the warp-threads have become accidentally broken. in the manufacture of duplex-pile fabrics as heretofore practiced the warp-threads not selected by the jacquard were taken into either the top or the bottom cloth, so that a figure was formed on one side only of each carpet, and it was difficult or impossible to determine if any of the warp-threads were broken or otherwise.

Having now described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-

In jacquard apparatus of the class set forth, the combination With the usual needles and cards, of cords arranged to be deflected by said needles, said cords having each two knots 27, 23 for cooperation with two boards, a stationary bottom board it to hold up the lower series of knots 2 so that the warps connected to the corresponding cords are floating between the two cloths, an intermediate movable lift-board Z adapted to lift the upper knots of the selected cords through a distance sufficient to raise the corresponding warps into the upper cloth of the fabric and adapted to momentarily retain said selected cords in raised position, a movable top lift-board h and an arm j for lowering and raising said top board it, said board it having a downward movement so that the lower knots 2 of the cords not selected by the jacquard rest on the stationary bottom board is, said intermediate board Zreceiving a downward movement sufficient to lower the selected warps into the bottom cloth, and said top board 7t having also an upward movement sufficient to raise all the warps to floating position, whereby a double-pile fabric is produced both of which fabrics are figured upon both sides thereof and the warps not selected float between the two fabrics, substantially as and for the purpose described.

In testimony whereof I have signed my name to thisspecification in the presence of two subscribing witnesses.

BENJAMIN SINCLAIR SMITH.

WVitnesses:

WALLAGE CRANsToN FAIRWEATHER, J AMES WRIGHT.

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