US391730A - Hoeace wymaf - Google Patents

Description

(No Model.)

H. WYMAN.

JAGQUARD MECHANISM FOR LOOMS.

No. 391,730. Patented Oct. 23, 1888 Ff g I. 7L

N. PETERS vhnwmfin m ncrl washin hm D. (I.

Warren dramas PATENT @rrron.

HORACE VVYMAN, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO THE GROMPTON LOOM WORKS, OF SAME PLACE.

JAGQUARD MECHANISM FOR LOOlVlS...

SPECIFICATION forming part of Letters Patent No. 391,730, dated October 23,1888.

Application filed April 21, 1858.

To all whom it may concern.-

Be it known that I, HORACE WYMAN, of Worcester, county of Vorcester, and State of Massachusetts, have invented an Improvement in Jacquard Mechanisms for Looms, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

The jacquard to be herein described contains double-ended needles,with which cooperate two sets of Jacquard cards, according to the pattern to be woven, each set of cards con trolling its own pattern, one serving in the production of, say, the body of a fabric, while the other serves for a stripe or border.

In accordance with my invention the double-ended needles have long eyes, which receive through them stop-pins forming parts of holder-bars, while the ends of the needles, afterpassing through spiralsprings,are extended through holes in guide-bars, the change of positions of the guide-bars and holder-bar acting to compress the said springs andplace one or the other end of the eye of the needle against the stop-pins, according to which end of the needle is to be acted upon by the Jacquard card, as will be described.

Figure 1 is a top or plan view of a Jacquard attachment embodying my invention, the top boards and liftingboards being partially broken away to show parts under them, the Jacquard cylinder at the right being operative; Fig. 2, a section of Fig. lin the dotted line on; Fig. 3, a detail in plan of part of the devices for moving the Jacquard cylinders; Fig. 4, a broken detail View taken from the right of Fig. 2; Fig.5, a detail view showing three needles and their supporting guidebars and holding-bar, the parts being in position to make the right-hand end of the needles oper ative, one of the needles being shown as pushed to the right, as it would be by the card of the right hand cylinder. Fig. 6 is a vertical section taken through the guides and holder, showing the needles as arranged in their vertical rows. Fig. 7 is a view similar to Fig. 5, but with the guide-bars and holderbar changedin position to enable the left-hand Serial No. 271,427., (No model.)

ends of the needles to be operative; Fig. 8, a modification to be referred to, and Fig. 9 yet another modification.

In my invention I shall not show the harnesses and the operative parts of the loom, as they may be of any usual or suitable construc tion. Neither is it deemed necessary to show devices for moving the lifting-boards, as they may be of any usual construction. Ihave also omitted from the cylinders the Jacquard cards, and in the cylinders have made buttwo rows of holes, as I have shown but two rows of needles.

The frame-work A, the top board or boards, A, the lifting board or boards A, the guideboards A A the knot-cords a, or harnesslif'ters, having the knots 2, carrying the barnesses, and the Jacquard cylinders a a are and may be of usual construction, the cylinders in practice having a series of holesone for each needle and carrying a series of Jacquard cards, all as usual. The cylinder at has itsjournals in a frame consisting oftwo like levers or arms a, pivotedat (6 ,3116. having pins or projections, as (d, which enterslotsin like links, ct,jointed at a to like arms, a", of a rock-shaft, a having an arm, a, to which is jointed a connecting-rod, c extended down to a cam or other shaft of the loom, where it is operated at the proper ti mesas, forinstance, in United States Patent No. 2,625, May 16, 1842, or in any other usual manner. The arm a has a projection, 3, which at times acts against a stud or projection, 4, of an elbow lever, b, pivoted at I), two such elbow-levers constituting the frame carrying the cylinder o The two frames carrying the two cylinders a c are connected together or normally drawn toward the center of the Jacquard head by springs b*. The needles or, composed of wire, are bent to form eyes 4 5 for the reception of the knot-cords, which are connected in usual manner to the harnesses, and to form stopeyes 6, which, passing between the pins 24, serve to hold the eyes 4 5 in a horizontal position, and also through which are extended the stop-wires 7,inserted through a holder-frame,c.

Each needle is provided with two springs, as 14 and 15, one near each end thereof, the

said springs being herein shown as placed between a shoulder or projection of the needle and the guide- bars 12 and 13.

The guide-bars 12 13 form part of a sliding frame, the side pieces of which are marked (2, and which are free to slide in guides 16, se cured to the frame-work A. The guides 16 also receive in them loosely the arresting or stop bar 6, bent at its ends, as shown in Fig. 1, and adapted to be placed in line with one or the other of the two frames carrying the Jacquard cylinders a ed, to hold one of the said frames from movinginwardly sufficient to strike and move the needles. This bar 6 has secured to it one end of the holding-bar c, the opposite end of the said bar being fast to a rod, 6, free to slide in suitable guides, c". The head has in it a rock-shaft, f, having a handlever, f, the rock-shaft near each bar d being provided with two arms, as 20 21, to which are jointed, respectively, the links 22 23, joined, respectively, to the rods d and to the bars e e, the partial rotation of the shaft f in one or the other direction moving the guidebars 12 13 in one and the holder-bar c in the other direction, thus compressing one or the other of the set of springs 14 or 15.

When the guide-bars 12 13 are moved to the right, as in Fig. 5, and the holding-bar to the left, the stops 7 come into the left-hand end of the stop-eyes 6 and the springs 7 are compressed, and in such condition the right-hand ends of the needles n are in condition to be acted upon by the usual Jacquard cards carried by the cylinder a.

Fig. 5 shows one of the needles pushed back as it will be when struck by a Jacquard card.

Fig. 7 shows the guide-bars 12 13 and the holder-bar c in reverse positions from that in Fig. 5, and in Fig. 7 the left-hand ends of the needles are in condition to be acted upon by the usual cards on the cylinder a the stops 7 being in the right-hand ends of the stop-eyes 6, the springs 14 being compressed.

The different vertical rows of needles are separated by division-rods or guide-pins 24. (Shown onlyin Figs. 5, 6, and 7.) The handle or leverf has connected to it a link, 25,which in practice may be attached to a lever to be moved by a cam or by the operator whenever it is desired to change from one to the other position.

When the cylinder a is operative, the bar 6 acts to hold the frame carrying the cylinder back from the ends of the needles n, as shown best in Fig. 2, at which time the arm a in its vibrations does not have to meet and turn the frame I), the pin a at such time being kept in the inner end of the slot in the link a by the spring 12 but when the frame a of the cylin being lifted whenever moved into the narrow parts of the slots. The same devices operate both of the frames carrying the cylinders.

Instead of employing harness-lifters composed of cords having knots, the needles it may be used to shift harness-lifters, (shown in Fig. 8 as hooks D,) which will be engaged by griffes, as in United States Patent No. 185,027, December 5, 1876.

I do not desire to limit my invention to the employment of the needles and cylinders herein described to that class only of jacquard in which the lifting-boards are divided and are actuated in opposite directions simultaneously, for my invention as herein claimed may be applied with equal facility to that class of jacquards wherein a single lifting-board or equivalent is moved up and down.

I deno'minate as harness-lifters not only the cords a, but any usual equivalent controlled by the needles and joined to the harnesses or heddles carrying the warps.

The needles may have only one eye instead of two, and the eye may be shaped as at M, Fig. 9.

I claim-- 1. In a jacquard, the following instrumentalities, viz: a set of double-ended needles haw ing eyes to control theharnesslifters, and stopeyes 6, and two springs surrounding each nee dle to move it, when desired, in either direction, combined with two guide-bars and an intermediate holder-bar and stops, and means to move the guide-bars and the holder-bar, and with two Jacquard cylinders, one ofwhich may be used to act on one or the other end of the said sets of needles at the will of the operator, substantially as described.

2. The double-ended needles, their guidebars, holder bar, springs, stops, and bar 9, and two Jacquard cylinders and their carrying le vers or frames, combined with means to move the said levers or frames, whereby they may be moved except when held out of operative position by the said bar 6, and with means to move the guidebars and holder-bar and the bar 0, substantially as described.

3. In a jacquard, the two cylinders a a needles and guides therefor, the carryingframes for the said cylinders, and the rockshaft a and its attached arms a a and link a, combined and operating substantially as shown and described.

4. The needles it, having eyes 4 and stopeyes 6, and the two sets of springs to move the needles in either direction, the guide-bars 12 13 for the said needles, the holder-bar, and stops to engage the stop-eyes, combined with means to actuate the said guide-bars and stopeyes, substantially as described.

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

HORACE WYMAN.

Witnesses:

JUSTIN A. WARE, GEORGE D. PRATT.

Images