US440566A - haslam - Google Patents

Description

(No Model.) 4 Sheets-Sheet 1. .L. HASLAM & U. MARSHALL.

LOOM FOR GROSS WEAVING. No. 440,566. Patented'Nov. 11, 1890.

(No ModeL) I '4 Sheets Sheet 2. L. HAS LAM 8v 0. MARSHALL. LOQM'POR GROSS WBAVING.

N0. 440,566. Patented Nov. 11, 1890.

(No Model.) 4 Sheets-Sheet 3. L. HASLAM 8v 0. MARSHALL.

LOOM FOR GROSS WEAVING.

'No. 440,566. Patented Nov. 11, 1890.

4 Sheets-Sheet 4.

L M HG. m m E MW S 0% im Mw F Tu m HL L (No-Model.)

Patented Nov. 11,1890.

ms NORRIS PETER; ca, mnro-umm, WASHINGTON, n. c.

UNITED STATES PATENT OEEIcE.

LEVIS HASLAM, OF RAVEI SWVOOD, AND CORNELIUS MARSHALL, OF BOLTON, COUNTY OF LANCASTER, ENGLAND; SAID MARSHALL ASSIGNOR TO SAID HASLAM.

LOOM FOR CROSS-WEAVING.

SPECIFICATION forming part of Letters Patent No. 440,566, dated November 11, 1890. Application filed November 26, 1889. Serial No. 331,607. (No model.) Patented in England October 1839: 1

To all whom it may concern:

Be it known that we, LEwIs HAsLnn and CORNELIUS MARSHALL, citizens of England, residing, respectively, at Ravenswood, near Bolton, and at Mayor Street, Bolton, both in the county of Lancaster, England, have invented a new and useful Improvement in Looms for Crosseaving, (for which application for patent in Great Britain has been made, which patent when granted will bear date October 19, 1889, No. 16,553,) of which the following is a specification.

Our invention relates to an arrangement, in combination, in a loom for weaving, of certain healds, of novel construction, which may be operated in such a manner as to produce fabrics of a net or leno character., For this purpose we arrange the warp-threads in groups, and by means of the additional healds acting in combination with the ordinary healds we give them movements by which they are crossed and interlaced with each other and with the weft, thus producing a pattern which may be varied by varying the numbers of grouped threads and the timing of the movements of the healds. The additional healds which we employ are in appearance some whatlike reeds, having in each alternate space a needle standing up from the lower bar, with the eye of the needle about midway in the height of the dent. lVe mount two of these healds in front of the ordinary healds, and by means of suitable cams we give them up and down movements, and also lateral reciprocating movements in opposite directions, the one moving to the right, while the other moves to the left. As an example, we may assume that the warp-threads are arranged in groups of four, which we distribute as follows: We pass the first of the group free through the ordinary heald, then through the eye of a needle in the rear needle-heald, then free through the front needle-heald. WVe pass the second and third threads through eyes of the ordi' nary heald, and then free through both the needle-healds. We pass the fourth thread free through the ordinary heald and the rear needle-heald, and then through an eye of a needle in the front needle-heald. As all the healds reciprocate vertically to form successive sheds,while the n eedle-healds reciprocate laterally, two of the threads of each group of four are made to cross the others, while one, two, or more shoots of the weft are made, and thus there are produced fabrics of a net or leno character and of many different patterns. In order to give slack for the crossing of the warp-threads and to take up slack, the threads which pass through the needle-eyes are carried on their way to the healds over a roller or bar having a reciprocating movement, by which they are alternately loosened and tightened.

Such being the general character of our in vention, we shall describe an apparatus according to our invention applied to a loom of ordinary construction, referring to the accompanying drawings.

Figure 1 is an end view, Fig. 2 is a front view, and Fig. 3 is a plan, of so much of a loom as is necessary to show our apparatus applied to it. Figs/l, 5, 6, 7, and 8 show the forms of the cams employed for weaving a particular leno pattern. Figs. 9, 10, and 11 show in plan three conditions of four of the warp-threads. Fig. 12 is a part transverse section showing the take-up for the crossing warp-threads. Fig. 13 shows the pattern of fabric produced by means of the apparatus. Fig. 14: is a front view of part of one of the needle-healds.

On the cam-shaft A of the 100111 we fix a set of camsnamely, a cam B for operating the take-up, cams B B 13 for operating the ordinary heald and the needle-healds and on the driving-wheel D we form a face-cam having a protuberance R for moving the needlehealds horizontally. The cams B B1 B B act on rollers on levers C O 0 0 respectively. The lever O is linked by a rod E to an arm on a rock-shaft K, arms of which, by rods M, move to and fro aroller L, or it might be a bar, over which are passed two of every four warpthreads, thus taking up and giving out the slack of these threads. The levers 0' G 0 are linked, respectively, by rods E E E to overhead levers on rock-shafts F F F From F is suspended the wordinary heald H, and from F and F are suspended in front of the heald H the two needle'healds G Giwhich will presently be described. The 0am R acts on a roller of a vertical lever Q, the upper end of which is linked to an arm P on a vertical rock-shaft N. The rock-shaft N and a parallel rock-shaft N have double arms P P and P P carrying guide-rods O, on which the needle-healds G G can slide vertically, while by the partial to-and-fro revolution of the shaft N they are caused to move from right to left and back. The cams give motions to the respective parts in one direction in each case, their back-strokes being effected by suitable springs Q. The needle-healds G G are made like reeds, butwith their spaces of double the width of those of the ordinary reed. From the lower bar of the frame in each case stand up needles g, having their eyes about midway in the height of the reed. There is a needle g in every alternate space of each reed, and these needles are in such positions that when the two needle-frames G G are in a middle position exactly facing each other a needle gin the one faces a space without a needle in the other. The stringing of every four Warp-threads co 1) o d is as shown by Fig. 9that is to say, a passes free through the heald H, but through the eye of a needle gin the frame G then free through G I) and 0 both pass through eyes of the heald H, but free through G and G cl passes free through the heald H and through G but through the eye of a needle g in G Thus the two middle warps b and c are moved up and down by the heald H, and the two side warps a and d are moved up and down and are also moved to right and left by the needles of G2 and G The yarns a and d are carried over the take-up roller or bar L, which gives and takes up the necessary slack.

The cams B B B B as shown respectively by Figs. 4, 5, 6, and 7, are formed to suit a repetition of pattern every seven picks, as shown by Fig. 13-namely, two picks 1 and 2 with d and ct crossed under a and b, but over the wefts which have 0 and 17 under them, then five picks 3 to 7, inclusive, of ordinary weaving, a and I) under and over the wefts together, while 01 and a are over and under the wefts together. Obviously by otherwise dividing the cams the number of picks of each kind might be varied, and the pattern might also be varied by arranging the warp threads in groups of different numbers.

Having thus described the nature of our invention and the best means we know of carrying the same into practical effect,we claim-- 1. In a loom for weaving, the combination, with the ordinary heald and a pair of auxiliary needle-healdsinfrontthereof,ofverticalguidebars on which said needle-healds are adapted to slide, vertical rocking shafts attached to said guide-bars, and connecting mechanism with the motive power, whereby the needlehealds are alternately rocked horizontally,

substantially as described.

2. In a loom for weaving, the combination, with a vertically-movable heald and a pair of horizontally and vertically reciprocating healds, of a series of cams for imparting the different motions thereto, suitable connecting mechanism, and a take-up roller or bar operated by one of said cams and adapted to control the slack of the Weaving-threads, substantialiy as described.

In testimony whereof we have signed our names to this specification, in the presence of two subscribing witnesses, this 1st day of November, A. D. 1889.

LEWIS HASLAM. CORNELIUS MARSHALL. Witnesses:

JOHN DENDY, J r., Solicitor, 5 Cross Street, Manchester.

J. FREDK. HEWITT, Clerk with Messrs. Dendg dc Paterson, S0-

Zicitors, 5 Cross Street, .Mancheszfer.

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