US791579A - Loom for fancy-leno weaving. - Google Patents

Description

PATENTBD JUNE 6, 1905.

' No. 791,579." y F. lF. RQGHB.-

v LOOM PoR FANCY LBNo WBAVING.:

APPLICATION FILED I'EB. 5, 1903.

v 2 SHEETS-suns ....wswsnu@ Rl Nek S3 NO3 PATENTED JUNE 6, 1905.

F. P. ROCHE. LOOM FOR FANCY LENO WEAVING.

APPLICATION F ILED FEB'. 5,- 1903.

INI/ENTOR f UNITED STATES` Patented June Q6, 19052 PATENT OFFICE.

FREDERICK E. ROCHE, OE LINCOLN, RHODE IsLAND,` AssIGNOR To MAN- VILLE COMPANY, OE PROVIDENCE, RHODE ISLAND, A CORPORATION OF NEW JERSEY.

LOOM FOR FANoY-LENO wEAvlNe...

SPECIFICATION forming part of Letters. Patent No. 791,57 9, dated June 6, 1905.

Application Eea Petrus-y 5, 190s. semi No. 142,033.

To @ZZ whom t may concern:

Be it known that I, FREDERICK F. ROCHE, lof Lincoln, in the county of Providence and State of Rhode Island,` have invented certain new and usefullrnprovements in Looms for Fancy- Leno Weaving; and I do hereby declare the following speoicat'ion, taken lin connection with the accompanying drawings, forming a part of the same, to be a full, clear, and exact description thereof. The present invention relates more particularl y to looms for weaving fancy leno or'gauze fabrics. in which the body of the fabric is `composed of leno-weaving and in which there are patterns or designs formed vby the introduction of a second or additional weft-thread; and the invention has for its object to provide simple and eiioient mechanism'for producing fabrics of this character. i

To that end vthe invention consists in the combination with the other parts of a Jacquard or fancy loom of a combined combfand reed with mechanism controlled by a suitablepattern device for giving to such combi-ned comb and reed both vertical and lateral movements, 'whereby both the opening of the shed and the crossing1 of the threads for the leno-weave will be effected by said combined comb and Y reed and whereby the location or arrangeg different stages of the weaving.

A represents the frame of an ordinary J acquard or fancy loom, in which is mounted the main shaft B, provided with fast and loose pulleys a a. The shaft B is provided with the usual cranks Z) b for operating the lay C through the connecting-links c. D is the combined comb and reed, which i provided with alternate long dents UZ and 'short per or free ends with eyes cl2, through which l one set of the warp-threads are passed.

The combined comb and reed is connected with the jacquard mechanism so that both vertical and lateral movements will be given to said combined comb and reed through said jacquard mechanism, the times when such movements shall be given to the combined comb and reed being controlled by a suitable pattern.

Connected with the upper side of the frame of the combined comb and reed are two straps e e, said straps being connected to two of the uprights of the jacquard mechanism, by means of which the required upward movements are givenl to the combined comb and reed at the desired times, according to the pattern employed. Connected with the lower side of the frame of the combined comb and reed are two springs ff, the other ends of which are secured to the floor or other fixture. The springs f f serve to give the required downward movements to the combined comb and reed at the desired times and when permitted to do so -by the jacquard mechan- To give the required lateral movements to the combined comb and reed in one direction, a cord g is connected to'one end ofthe frame, said Cord passing around suitable pulleys g' g' and being connected to one arm of a bellcrank lever z.. pivoted on a standard 7a2, secured to the frame of the loom. The other arm, 71.', of the bell-crank lever is connected by a strap c' with one of the uprights of the jacquard mechanism. To give the required lateral movement to the combined comb and reed in the other direction, a spring j is connected to the other endy of the frame of the combined comb and-reed and to the frame of the loom, the action of saidspri'ngV being controlledV by the pattern mechanism.

1n Fig. 1 the combined comb and reed is is held in this lateralposition against the pull ot the spring j by the latch Z. yAs will be seen, the combined comb and reed when depressed is moved to a position to bring the upper ends of the shortdents d below the lower threads t of the shed and so that in moving laterally the short dents may pass by said threads. This gives the appearance in Fig. 4 of there being three sets of warp-threads, which is not the case, the warp-threads t being separated by the jacquard-harnesses to Jform the shed, andthe vthreads t, which form a portion of the lower side of the shed, being carried by the short dents to a plane below the lower threads z5. Y

The pattern weft-thread having been carried through the shed opened by the jacq uard-harnesses the combined comb and reed' is then raised to lift the threads t and open the shed for the next pick, the jacquard-harnesses being atthe same time operated to bring all the threads into the same plane and the parts being brought into the position shown in Fig. 5. rIhe short dents cl rise this time on the other side ofthe warp-threads t', thereby7 completing the crossing of the threads tand t', which crossing takes place at or near the woven fabric and serves to hold the leno weft-thread and the pattern weft-thread in place. The thread z5 now lies on the Jfront side ot' the short dent d', as shown in said Fig. 5. It will be observed that when the short dent comes up on this side of the thread t there is no crossing of the threads adjacent to the eye p of the jacquard-harness, the reason for this be-.

ing that the threads t and-t have now been brought back to their normal relation as delivered from the warp-roll.

When the leno weft-thread has been carried through the lshed thus formed, the combined comb and reed is again depressed and moved laterally to the left, the latch Z being released at the proper time to permit such lateral movement, and the shed for the next pick is opened by the jacquard harnesses and the pattern weft-thread laid. The combined comb and reed is then again raised to open the shed for the next pick, and-so on.

By reason of the temporary crossing of the threads near the eye of the jacquard-harness, which takes place when the short dent comes up on the far side of the thread t', as shown in Fig. 3, the shed formed by the combined comb and reed at this pick is much shorter than the shed formed by the jacquardharness and much shorter than the shed formed by the combined comb and reed when the short dent comes up on the front side of the thread t', as shown in the drawings. Because of the shortness of the shed at this pick it is desirable that the threads t should be eased up, so as to give an amount of slack sufficient to permit the requisite upward movement ot' the combined comb and reed to form the shed. It is for this reason that the caser-roll s is employed and the threads t led over such easerroll, saideaser-roll being moved forward at the proper times by the jacquard mechanism in the usual manner and so as to give up the necessary amount of slack. It desired, the caser-roll may be operated for every pick at Awhich the `shed is opened by the combined comb and reed; but this is not necessary, because with the threads in the position shown in Fig. 5 the shed opened by the combined comb and reed extends back nearly to the Jforward lease-rod and is nearly as long as the shed formed by the jacquard-harness.

With the construction and operation of parts above described it will be seen that the combined comb and reed not only serves to elfect the crossing of the threads, but also serves to open the shed for the pick at which the leno weft-thread is laid` said'combined comb and reed being given both lateral and vertical movements to perform these functions. It will be further seen that the movements of the combined comb and reed, both vertical and lateral, are effected or controlled by pattern mechanism, and that thus the times oi" these movements may be varied as desired. Thus the shed maybe opened by the combined comb and reed and by the jacquard-harnesses alternately and the leno weft-thread and the pattern weft-thread laid at alternate picks, or the shed may be opened and closed successively by the combined comb and reed and a succession of leno weft-threads laid to produce plainleno Weaving and Without the laying of any pattern weft-threads, or the combined comb and reed may be held out of operation while the shed is opened a number of times by the jacquard-harnesses and a number of pattern weft-threads laid in succession before the shed isfagain opened by the combined comb and reed for the laying of the next leno weftthread. In the latter case by the opening of different sheds for the successive pattern weftthreads the character and arrangement of the patterns may be varied. If desired, the successive pattern weft-threads may be of different or varying colors.

What I claim as my invention, and desire to secure by Letters Patent, is

l. In a loom, the combination, with pattern mechanism, of a combined comb and reed cornprising long dents and short dents, the short dents being provided with eyes to receive one set of the warp-threads, said combined comb and reed being given both a vertical and a lateral movement under the control of said pattern mechanism, substantially as described.

2. In a loom, the combination, with pattern mechanism, of acombined comb and reed comprising long dents and short dents, the short dents being provided with eyes to receive one set of the warp-threads, said combined comb and reed being given la lateral movement to `cross the warp-threads, and then an upward movement to o pen the shed-for the next pick,

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said movements of the combined comb and reed being controlled by the pattern mechanism, substantially as described.

3. In a loom, the con'ibination of harnesses for operating one set of warp-th reads, a combined comb and reed for operatingl the other set of warp-threads, pattern mechanism for controlling` said harnesses to open the shed for certain picks and for controlling said combined comb and reed to cross the threads and to open the shed AFor certain other picks, substantially as described.

Lt. In a loom, the combination ot' harnesses for operating one set ot' warpthreads, acombined comb and reed for operating the other set of warp-threads, an easer-roll over which said second set of warp-threads are passed, pattern mechanism for controlling said harnesses to open the shed for certain picks and for controlling` said combined comb and reed to cross the threads and to open the shed `for certain other picks, and also for controlling the operation of said caser-roll at the proper times. substantially as described.

In a loom, the combination, with pattern mechanism, oi'` a combined eomband reed comprising long dents and short dents, the short dents being,I provided with c ves to receive one set oi the warp-thremls, said c 1nl, ined comb and reed being' `given both vertical and lateral movements under the control oll said pattern mechanism, and a locking` device also under the control ot' said pattern mechanism l`or locking.;` the combined comb and reed at the end of one of its lateral movements, substantially as described.

FREIHCRICl( F. NOU] I IC.

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