US2278862A

US2278862A - Loom

Info

Publication number: US2278862A
Application number: US399703A
Authority: US
Inventors: Octave P Caron
Original assignee: Individual
Current assignee: Individual
Priority date: 1941-06-25
Filing date: 1941-06-25
Publication date: 1942-04-07
Anticipated expiration: 1959-04-07

Description

April 7, 1942. o P, CARQN 2,278,862

LOOM

Filed June 25, 1941 4 Sheets-Sheet 1 2'1 5L9] 9 J5] IINVENTOR;

25 0. ECO/q,

April 7, 1942. R CARON 2,278,862

LOOM

' Filed June 25, 1941 4 Sheets-Sheet 2 (a) I NVENTOR.

O. Caron 0. P. CARON April 7, 1942.

LOOM

Filed June 25, 1941 4 Sheets-Shegt 3 INVENTOR.

G F. Caro/7 0. P. CARON April 7, 1942.

LOOM

4 Sheets-Sheet 4 Filed June 25, 1941 INVENTOR. I 0 Caron,

Patented Apr. 7, 1942 p urureo STATES PATENT OFFICE 8 Claims.

This invention relates to improvements in looms, and more particularly to looms for weaving gauze, leno or marquisette fabrics.

In conventional looms employed in cross weaving, the warp threads are controlled by doup heddles and jumper heddles; the jumper threads or ground threads being raised and lowered by the jumper heddles, and the doup threads being raised and lowered by the doup heddles. In such apparatus, an easing bar presses downwardly on the doup threads at a position in close proximity to the jumper heddles, and a slackener also exerts tension on the doup threads anterior to the lease rods, i. e., at a place remote from the heddles. This results in cross sheds, wear and breakage of threads, and sheds of low height; the latter being a handicap in the threading of the weft shuttle through the shed.

The primary purpose of the present invention is to obviate such objections, and provide a loom having means for eliminating cross sheds, the easing bar and/or the slackener, and to furnish means whereby the sheds may be made of greater height to facilitate threading of the C shuttle therethrough.

Another object is to supply improved means to enable the loom to be used either for cross weaving or for straight weaving where desirable.

With the foregoing objects outlined and with other objects in View which will appear as the description proceeds, the invention consists in the novel features hereinafter described in detail, illustrated in the accompanying drawings, and more particularly pointed out in the appended claims. I

In the drawings:

Fig. 1 is a diagramamtic view of parts of a loom, partially in side elevation and partially in perspective, showing the heddles with their control means, and with the parts in neutral position.

Fig. 2 is a similar view but showing one of the doup standards and the doupv in uppermost position, and with my auxiliary or triple action heddle in raisedposition.

Fig. 3 is a similar View but showing the opposite standard of the doup in elevated position.

Fig. 4 is a view like Fig. 1, but showing the doup heddle and my auxiliary heddle in lowermost positions.

Fig. 5 is a side elevation of a portion of the structure shown in Fig. 1, and illustrating the manner in which a cross rod supplants the easing bar heretofore employed. Referring to the drawings, 5 designates a conventional doup needle or heddle made by punching or stamping from a thin flat strip of metal, and having at its upper end an eye portion 6 through which the doup warp l is threaded. Depending from the eye-end of the doup heddle are legs 8 terminating at their lower extremities in slotted portions 9 for connection with the usual means of control which may be of any of the forms in common use and well known in the art.

As is customary each doup heddle is alter nately lifted by standards 10 and [I having enlarged slotted upper ends 13 for the reception of shafts H! which are raised by means of ropes or cables 15, I6, hereinafter referred to. The doup heddles and their standards may be of the type disclosed in U. S. Patent No. 1,037,151,

dated Aug. 27, 1912, and their operation will I be readily apparent to those skilled in the art, as it may be seen that as one or the other of the guide or lifting heddles [0, H is raised, the doup thread I will be carried above the ground thread I1, and to the one side or the other of said ground thread, according to which guide heddle (l0, II) is raised.

The jumper heddle in the present invention is shown at l8, and itseye l9, through which the ground thread I! is threaded, is positioned nearer the upper end 20 than the lower end 21 of the jumper heddle. In other words, it is lo cated slightly above a point exactlymidway between the ends of the heddle Ill. The jumper heddle is controlled in the customary way through the instrumentality of a lifting cord 22 by means (not shown), and reciprooates once for each pick.

In accordance with my invention, I arrange between the conventional doup heddles and jumper heddles, auxiliary means to act on the doup warps so that the portions of said warps,

between the jumper heddles and the doup hed-.

dles, will rise and descend with the doup standards or lifters I0 and II, and yet will keep the .doup threads, at points adjacent to the jumper heddles, always below the ground threads, as

will be clear from an examination of the figures of the drawings.

The auxiliary means which form an important feature of my invention may consist (for example), of auxiliary heddles 23 positioned between passing over a pulley 28 and connected to a yoke 29. The latter preferably consists of a pair of spaced bars having vertical side portions 33] extending substantially through one half the length thereof, and top and bottom portions 3I extending through the other half of the lengt thereof. The vertical portions are connected by

cross pins

32 and 33, the former being connected to the cord 21, and the latter forming an abutment which cooperates with notches in conventional jacks or levers Ida and Ho. The upper and lower portions 3I of the yoke are connected at one end of the latter by a vertically disposed stop pin 34 which cooperates with the horizontally disposed stop shaft 35 positioned at the top of the loom for the usual jumper operation.

The cord I5 which lifts the doup standard heddle ID, passes over a pulley 36 and is connected by a saddle 3'! to the jack Ida while the lifting cord I5 of the doup standard II passes over a pulley 38 and is connected to a saddle 38 which in turn is connected to the jack Ila.

In Fig. l, the parts are shown in neutral position, with the stop pin 34 abutting the stop bar 35 so that the heddle 23 is in its lowermost position. At this time, the jacks IM and Na register with one another, but are not in their fully retracted position, because in the latter position, the doup 5 moves downwardly further to facilitate the formation of sheds.

As shown in Fig. 2, jack Illa has moved forwardly to raise the doup standard In, and with it, the doup eye 6, and in doing this, the jack pushes on the pin 33 and thus shifts the yoke 29 toward the left. As the yoke is connected to the auxiliary heddle 23, the latter will be raised. As the doup eye ascends, it will carry the doup thread I upwardly at one side of the ground thread I? (forward side in Fig. 2). When the parts are in the positions shown in Fig. 2, the shuttle will be passed through the shed in the usual manner. After the pick, the jack Ifla will return to retracted position (indicated in Fig. 4) while the jack I la will move forwardly to engage the yoke pin 33 (Fig. 3), so as to simultaneously raise the doup standard II and the auxiliary heddle 23. The doup eye in rising, will now lift the doup thread I, but at the opposite side of the ground thread (rearward side in Fig. 3). When the parts are in the position of Fig. 3, the shuttle will again be passed through the shed, and so on. Of course, the shuttle, on each pick, will lay in one or more weft threads to be secured in the fabric by the next twisting of the warps i and I1.

When both jacks Ida, Ha are in the fully retracted position shown in Fig. 4, the doup eye 6 will be at its lowermost position, and the auxiliary heddle will be supported in its lowermost position by the abutment of the stop pin 35 with the stop shaft 35. At this time, the jumper heddle I8 will be at its highest position, so that the shed may effect a change-over to a different type of weaving.

As best shown in Fig. 5, the doup warps "I, after having been passed under a horizontal bar or rod 80 which is spaced a considerable distance from the jumper heddles, as compared with the casing bar heretofore employed, passes through the eye 24 of my auxiliary heddle 23, and then up through the doup needle eye 5 so as to prevent any cross shed and thereby eliminate the need of a slackener or easing bar. In my invention, the

and lowered in unison by means of a cord 21 bar 40 is arranged in close proximity to the conventional lease rods 4|.

In the event that the mechanism is to be employed in straight weaving, in oontradistinction to cross weaving, one or the other of the jacks Illa, I la will remain stationary in retracted position while the yoke 29 is operated by the other one of said jacks, and the jumper heddle is raised and lowered in the usual way, and in such operation, as the auxiliary heddle 23 rises and falls with the movable one of the doup standards II), II, a relatively high shed will be formed, even in straight weaving. This can be readily seen from Fig. 4.

While I have disclosed what I now consider to be a preferred embodiment of my invention in such manner that the same may be readily understood by those familiar with weaving, it is apparent that changes may be made in the details disclosed, without departing from the spirit of the invention, as expressed in the claims.

What I claim and desire to secure by Letters Patent is:

l. Weaving means comprising a doup heddle having an eye to receive a doup thread, a jumper heddle having an eye to receive a ground thread, a pair of lifting standards associated with the doup heddle, auxiliary means positioned between the jumper heddle and the doup heddle and engageable with the doup thread for constantly maintaining the portion of said thread adjacent the jumper heddle in positions always lower than the eye of the jumper heddle, and means for alternately raising and lowering said standards and for simultaneously raising or lowering said auxiliary means with either one of said standards.

2. Weaving means comprising a doup heddle having an eye to receive a doup thread, a jumper heddle having an eye to receive a ground thread, a pair of lifting standards associated with the doup heddle for alternately lifting the latter, an auxiliary heddle positioned between the jumper heddle and the doup heddle and having an eye to receive the doup thread for constantly maintaining the portion of said thread adjacent the jumper heddle in positions always lower than the eye of the jumper heddle, and means for alternately raising and lowering said standards and for simultaneously raising or lowering said auxiliary heddle with either one of said standards.

3. Weaving means comprising a doup heddle having an eye to receive a doup thread, a jumper heddle having an-eye to receive a ground thread, said eye being positioned nearer to the upper end than the lower end of the jumper heddle, a pair of lifting standards associated with the doup heddle, auxiliary means positioned between the jumper heddle and the doup heddle and engageable with the doup thread for constantly maintaining the portion of said thread adjacent the jumper heddle in positions always lower than the eye of the jumper heddle, and means for alternately raising and lowering said standards and for simultaneously raising or lower said auxiliary means with either one of said standards.

4. Weaving means comprising a doup heddle having an eye to receive a doup thread, a jumper heddle having an eye to receive a ground thread, a pair of lifting standards associated with the doup heddle, an auxiliary heddle positioned between the jumper heddle and the doup heddle and having an eye to receive the doup thread for constantly maintaining the portion of said doup thread adjacent the jumper heddle in positions always lower than the eye of the jumper heddle, the eye of the auxiliary heddle being positioned nearer to the lower end than to the upper end of that heddle, and means for alternately raising and lowering said standards and for simultaneously raising or lowering said auxiliary heddle with either one of said standards.

5. Weaving. means comprising a doup heddle having an eye to receive a doup thread, a jumper heddle having an eye to receive a ground thread, a pair. of lifting standards associated with the doup heddle, auxiliary means positioned between the jumper heddle and the doup heddle and engageable with the doup thread for constantly maintaining the portion of said thread adjacent the jumper heddle in positions always lower than the eye of the jumper heddle, means for alternately raising and lowering said standards and for simultaneously raising or lowering said auxiliary means in unison with either one of said standards, lease rods spaced from the jump er heddle and about which the doup thread and ground thread are adapted to pass, and a hori-,

zontal bar arranged in close proximity to the lease rods but spaced a material distance from the jumper heddle for restricting upward movement of a portion of the doup thread between the lease rods and the jumper heddle.

6. Weaving means of the kind claimed in claim 1, in which the means for alternately raising and lowering said standards and for simultaneously raising or lowering said auxiliary means with either one of said standards comprises a yoke, a pair of jacks operatively connected with said lifting standards and engageable with the yoke for moving the latter in one direction, means operatively connecting the yoke with said auxiliary means, and a stop member cooperating with the yoke to limit downward movementof the auxiliary means.

7. In a loom, a pair of alternately movable jacks, a yoke having an abutment engageable by either one of the jacks for moving the yoke in one direction, a stop bar passing through a portion of the yoke, and an abutment on the yoke engageable with the stop bar for limiting the movement of the yoke in the opposite direction, a saddle connected to each jack, and a heddle actuating member connected to the yoke.

8. Ina loom, a horizontal shaft, a yoke having top and bottom portions and opposite side portions, said top and bottom portions being arranged respectively above and below said horizontal shaft, a stop bar connecting said top and bottom portions and engageable with the shaft for limiting themovement of the yoke inone direction, a cross pin connecting the opposite side portions of the yoke at the medial portion of the latter, a pair of reciprocating jacks extending through the yoke between the opposite side portions thereof and alternately engageable with said stop pin, and means for connecting each of said jacks and said yoke to harness of a loom.

OCTAVE P. CARON.