US1194130A - briot - Google Patents

Description

A. BRIOT.

AUTOMATIC WEFT REPLENISHING LOOM- APPLICATION mzn SEPT. 19. 1912.

1 1 94, 1 30, Patented Aug. 8, 1916.

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A. 5mm. AUTOMATIC WEFI REPLENISHWG LOOM: APPLICATION FILED SEPT. 19, I912.

1,194,130. Patented Aug. 8, 1916.

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AUTOMATIC WEFT REPLENISHING LOOM.

APPLICATION FILED SEPT. 19, 1912.

Patented Aug 8,1916

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ALBERT BRIOT, F NOMEXY, FRANCE.

AUTOMATIC WEFT-REPLENISI-IING LOOlVI.

Specification of Letters Patent.

Patented Aug. 8, H516.

Application filed September 19, 1912. Serial No. 721,135.

To all whom it may concern:

Be it known that I, ALBERT BRIOT, citizen of the French Republic, residing at Nomexy, Department of Vosges, France, have invented an Improved Automatic .Veft-Iieplenishing Loom, of which the following is a specification.

In automatic looms in which the insertion of the bobbin is effected horizontally, it happens sometimes that owing to the velocity of the recoil movement of the batten of the loom, the ejected bobbin spindle places itself transversely to the groove of the shuttle preventing in this manner the outward stroke of the latter and thus causing a liability to damage of the parts of the loom. In this type of loom the weft comes out in front of the groove of the shuttle so that if exchanging is caused by the well. known apparatus called the weft feeler the end of the weft thread between the selvage of the fabric and the threader of the shuttle, instead of being carried off with the ejected bobbin spindle is liable to be retained by the new bobbin introduced and drawn into the fabric, so causing a defect. The device according to this invention is designed to prevent these inconveniences.

The invention consists substantially in the arrangement of the shuttle and the bobbin carrier. The arrangement according to the invention being the reverse of the one generally adopted in automatic looms with replaceable bobbins or in other words, when the shuttle is in the shuttle-box arranged at the side of the apparatus, the pair of holding jaws of the shuttle is near the picker and the threader near the fabric. It is evident that by this arrangement the threading cannot be done during the passing of the shuttle through the shed following the replenishment, but that it will be effected during the following shot of the shuttle through the shed if there has been provided at the magazine for the bobbins an arrangement allowing for the provision of a length of thread equal to the length of the throw of the shuttle through the shed said supplementary length of weft thread forming the first shot after the replenishment of the bobbin. This arrangement is shown by way of example applied to the apparatus with automatic replenishment of the weft, described in the application filed in the U. S. A. on the 19th July, 1911, S. No. 639286.

In the accompanying drawings; Figure 1 1s a longitudinal section of the arrangement generally used, the arrow showing the direction in which the shuttle is thrown. The ejected bobbin spindle is shown partly in engagement with the shuttle. Fig. 2 shows a side elevation partly in section of the arrangement according to this invention and shows also in dotted lines the ejected bobbin spindle partly in engagement with the shuttle, the arrow indicating the direction in which the shuttle is thrown. Fig. 3 is a side view of the magazine and of the carrier, the frame being supposed removed. Fig. 4 is a front view of the magazine. Fig. 5 is a diagrammatic view showing the manner in which the threads of the weft are placed in the magazine for forming the re serve for one shot. Fig. 6is a plan view showing the position of the weft thread during the passing of the shuttle through the shed which follows the replenishment. Fig. 7 is a plan view showing the threading of the weft thread during the second passing which follows the replenishment.

Fig. 1 shows that if the bobbin spindle 1 remains engaged with the shuttle 2, the movement of the shuttle in the direction of the arrow will by the known arrangement increase this engagement, while by the arrangement according to this invention 2), if the bobbin spindle 1 takes the position 1 the movement of the shuttle 2 in the direction of the arrow effects the ejection of the bobbin.

A comparison of Figs. 1 and 2 will illustrate that in the first case, when a feeler is used, there is a certain length of weft thread in the front of the groove of the shuttle so that this thread is broken during the replenishment and thrown into the fabric, while in the second case (Fig. 2) this disadvantage is overcome since there is no thread in front of the groove of the shuttle, and if the thread 3 is cut during the replenishment, the end of this thread 3 remaining between the selvage of the fabric and the threader, by means of well known knives or cutting devices, shall be carried off easily by the ejected bobbin spindle 1. After the replenishment, the shuttle 2 is thrown in the direction shown in Fig. 6 dragging with it the new bobbin with the weft thread 4.

In order to prevent the weft thread f of the bobbins in the magazine from being broken during the replenishment the following device is provided: To the upper part 01 the magazine is fixed a. vertically adjustable pin 5, a second pin 6 parallel to the first being fixed to the lower part (Figs. 3, t and 5). The thread 41- ot the bobbin 7 placed in the magazine (Figs. i and 5) passes over the bolt 5, then over bolt 6 and is finally placed on the following bobbin 7 in front of which the thread end hangs down. The distance of the pins 5 and 6 is equal to the length of half the throw of the shuttle so that the length of thread i is sulficient to provide for the shot after replenishment. The position of the pins 5 and 6 is such that the two parts of the thread 1- and t are vertical so that in every position of the bobbins 7 in the magazine this thread remains taut and it cannot wind spirally nor interweave with the adjacent threads. It is further evident (Figs. 3 and t) that the end of this thread is held between the bobbin 7 to which it belongs and that which is placed above. hen the carrier 8 moves in order to eifect the replenishment, the bobbin 7 is separated from the bobbin 7' above it (Fig. so that the end of thread it is released; it is drawn in the shed with the bobbin in .its passage, forming in this way the shot after the replenishment has taken place (Figs. 6 and 7 hen the shuttle is thrown in the opposite direction the thread 4, which is held at the selvage of the fabric 9 by crossing of the latter is brought into engagement with the threader 10 in the usual manner and the weaving is carried out regularly.

It is to be understood that the application 1 of this invention to the apparatus described ascertained the nature of my said invention and in what manner the same is to be per formed, I declare that what I claim is:

1. In looms, an automatic bobbin replenishing mechanism, having a magazine adapted to contain a plurality of full bobbins therein resting one above the other, and.

means on said mechanism over which a length of thread is looped, the end of said length being held between the bobbin of which it forms a part and the one-immediately thereabove.

.2. In looms, the combination with a shuttle -box having a shuttle therein, with its threader adjacent the fabric on the loom when in said box, of an automatic bobbin replenishing mechanism operatively associated therewith, said mechanism having a magazine ac'iapted to contain a plurality of full bobbins arranged one on top of the other, pins on said mechanism each bobbin in said mechanism having a length of thread looped over said pins of sufficient length to complete one shot of the shuttle, the ends of said'lengths of thread being held between the bobbin ofwhich it forms a part and the one immediately thereabove.

3. In looms, the combination with a shuttle-box having a shuttle, with its threader arranged adjacent the fabric on the loom when within said box, of an automatic bob bin replenishing mechanism operatively associated therewith, said mechanism having a magazine adapted to contain a plurality of full bobbins, arranged one above the other, a plurality of members over which is passed a length of thread from each bobbin of sufficient length to complete one shot of the shuttle, the free ends of said lengths of thread being held between the bobbin of which it constitutes a part and the one immediately thereabove. I

in testimony whereof I affix my signature in presence of two witnesses.

ALBERT BRIOT.

Witnesses Cains DANZER, LUomN CREsriN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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