US1822292A - Circular loom for weaving - Google Patents

Description

Sept. 8, 1931. J. B. JABOULEY 2 1,822,292

" CIRCULAR Loom FOR wEAvING l Filel Feb. 4. 1928 2 Sheets-Sheet l ...2211.1... JZ 13g Iwww".

134 d' 122 22 153ml Hummm? Sept 8, 1931-v J. B. JABOULEY 1,822,292

l cvIRcULAR Loom FOR wEAvING Filed Feb. 4, 1928 2 Sheets-Sheet 2 Patented Sept. 8, 1931 UNITED STATES PATENT OFFICE J' DANNY BARTHELEMY JABOULEY, OF VILLEURBANNE, FRANCE, ASSIGNOR, BY MESNE ASSIGNMENTS, T LEON JALOUSTRE, OF PARIS, FRANCE CIRCULAR LOOM FOR WEAVING Y Application led February 4, 1928, Serial No. 251,941, and in France February 16, 1927.'

In certain circular looms the shuttles which are stationary are mounted inside the warp threads which are arranged vertically and circularly, the whole being given a rotary movement about a vertical shaft of the loom, while the shuttles remain stationary.

lVith this arrangement, when owing to the breakage of a warp or weft thread a stoppage occurs, the waip which finds itself held, knocks up against the first shuttle which it encounters, and being thus stopped breaks, or stops the loom, which always causes considerable damage.

The object of the present invention .is an arrangement rcmedying this inconvenience, and consisting essentially in allowing the shuttles to move in case of a warp being held or other accident, but leaving them rigid during the rotation of the loom.

For this purpose each shuttle is provided with a resilient nose having a spindle, which when drawn back acts upon a bolt which frees the two frames, that rotating with the loom and that carrying the shuttles and discs.

Special arrangements are provided a continually give the discs as well as the rollers which receive the cloth after weaving, a rotary movement proportional to the difference in speed between the frames aforesaid. This invention is an improvement on the circular loom for which Letters Patent of the United States No. 1,626,411, were granted to me April 26, 192.7. The invention will be fully 'understood with reference to the description which follows and to the accompanying drawings, which descrip-tion and drawings are given by way of example.

Figure 1 is a plan of a loom, certain parts being in section.

Figure 2 is a perspective view on an enlarged scale of one arrangement.

Figure 3 shows a shuttle with a resilient nose, and the separate control arrangements for the discs.

Figure 4 is an elevation of the take up mechanism for the cloth.

Figure 5,is a detail perspective of gears At the level of each of these spindles 105 is an arm 106. Each of these is mounted on a circular rod 107. Said circular rod is arranged in engagement with the peripheral grooves of a plurality of pulleys 116 and is arranged on the inner side of said pulleys. Said pulleys are mounted for rotation on the upper ends of standards 142, which standards have their lower ends secured to arms 143, which arms are pivotally secured on triangular plates 144 which are bolted on an annular supporting plate 115. The circular rod 107 may be displaced by fork 108, the slot of which is engaged by a vertical rod 1061, which rod rises from a base 106b which is secured to and carried by the circular rod 107. The arm 106 is secured to the vertical rod 106, as shown. The fork 108 is secured on a standard or arm which rises from one end of a lever 109, which lever is pivotally mounted as at 110. Said lever serves to abut against a member `111 which is secured on a carriage 112. A spring 113 has one end connected to the element 143 and the other end'connected to the carriage as shown in Figure 2, so that said spring tends to hold said lever in contact with said abutment.

The annular supporting frame 115 which controls the rod 107 through the grooved pulleys 116 is mounted in contact with rollers 140 carried on pillars 138 on the loom and is stationary under normal working conditions under the action of a band brake 117 held in contact by a finger 118 pivoted at 119 about a point on the handle 120.

An annular supporting plate 122 is arranged below andl is spaced from the plate 115 and said plate 122'turns at the same speed as the assembly of all of the threads of the chain of the loom.

On the other hand discs 123 carried by brackets 124 affixed to the supporting frame 115 are controlled individually through bevel wheels 125 and pinions 126 gearing with a circular toothed rack 12T carried by and secured on plate 122. The faces of the dises 123 are not at right angles to their axes of rotation. Each sector of each said disc is an element with a helicoidal surface. The number of such surfaces may of course be varied. These discs perform the function fully described in said Letters Patent of the United States 1,626,411. The carriage 112 is arranged under and extends across one side of the annular plate 115 and is pivotally connected thereto as at 11-l. The free inner end of said carriage to which the abutment element 111 is attached is provided with two downwardly extending spaced gripping jaws 112, one of which moves in an annular groove in an annular shoulder plate 121 which is secured on the plate 122 as shown, the other jaw being arranged to engage against the inner side of said shoulder plate 121. In order to eliminate any impediment to the rotation of the plate 121 itis necessary that the face of the groove and the surface of tho two gripping jaws of the carriage should remain parallel. 'hen the carriage turns about its pivot 114 this parallel relation is interrupted and the annular shoulder 121 is gripped between the gripping jaws as will be understood, so that during such gripping action the annular supporting plate 115 becomes tixedly connected with the plate 122.

r1`he arrangement for taking up the cloth after weaving is through a shaft 131 operating the lower rollers through a train of gearing 132 (Fig. 4) of which the. last pinion is permanently held in mesh with a toothed rack 133 carried by rods 1?-1 on the table 115. Said lower rollers serve for winding u the finished fabric. One of such rollers is S iown in Patent 1,626,411 hereinbefore mentioned.

Finally a second circular rod 128 passing over the same grooved pulleys 116 on the outer side thereof is connected to the carriage 112 through a fork 129 and lever 130, the latter' being secured to the gripping carriage 112. Saidlever serves to keep the earriage inV place in order to actuate the locking system when the latter has operated. Said locking system comprises the carriage 112 which serves for maintaining the lower frame 122 rigid with the annular supporting plate 115 as will be understood.

The operation of the arrangement is as follows:

In normal running, the carriage 112 being constantly perpendicular to the shoulder 121, no forces are produced and the frame 115 is held by its brake 117. The discs are operated individually by their respective pinion 126 in mesh with the toothed rack 127 rotating with the loom. Further the shaft 131 following this movement is given a rotary movement about its axis by the train of gearing hereinbefore described and which assembly of gears including the toothed rack 132-5 is called, in France, the Horsehead.

Said rack, shown in Figure i, is integral with the plate 115 which supports it by the means of the suspension rods 1214. This rack is stationary when the plate 115 is stationary, that is, during the normal operation of the loom. It serves to actuate the members which roll up the manufactured material. The movement of the shaft 131 which is imparted thereto by the gearing including the elements 33, 132 and 145 is transmitted to the'windup beams which are fully shown and described in U. S. Patent No. 1.624,411. Said shaft and its gearing connections are shown in detail in the perspective view Figure As soon as any accident occurs to prevent, for example, the free passage of a shuttle between the warps. its resilient nose 101 contacts against the obstacle and is pushed backwards. During this movement the rod pushes in its turn the corresponding arm 106, which produces a slight displacement of the band 10T in the direction of the arrow 135. This displacement causes the rocking of the lever 109 about its axis 110, thus freeing the carriage 112 which under the action of the spring 113, pivots in the direction of the arrow 136 about its axis 114.

In this .movement by reason of its gripping jaws the carriage 112 binds on the shoulder 121 as hereinbefore described and is drawn by the frame 122 which moves with the loom in the direction of the arrow 13T. The finger 118 of the brake rocks automatically under this force about its axis 119 (arrow 139) loosening the band 11T and allowing the table to be driven by frame 122. \Vhen these two tables turn together the warp is not displaced any more with respect to the shuttles which fly so to speak before the obstacle which they have found, while the discs as well as the take up rollers are automatically stopped, as the pinion 126 and also the bevel wheels 125 no longer rotate about their axes.

The loom having been stopped and the accident repaired, the carriage 112 is replaced to drive the rod 12S in the direction of the arrow 141, the brake band 117 is applied by rocking the finger 118 and the loom may be then restarted.

During the normal operation of the loom7 the plate 115 is absolutely stationary. The invention has the object of rendering it movable at the moment when a break of the thread occurs, so as to avoid the partial or complete destruction of the warp on the loom. All the members described act for this purpose.

As the plate 115 may consequently not be fastened rigidly to the columns 138 of the structure of the loom, they are supported by the said columns by means of pulleys 140 on which and against which this plate rolls when it is not checked and when it is separated from the movable plate 122.

What I claim is:

' 1. Acircular loom of the type employing a plurality of stationary shuttles for weaving in combination with means for connecting the shuttles to the rotary portion of the loom in case of accident, a resilient nose being pro- 0 vided on each-shuttle, a rod operated by theI nose and a. carriage upon which the shuttles are mounted freed by therod to allow the carriage and shuttles to rotate with the loom;

2. Acircular loom as in claim 1 in combi- 15 nation with helices, a shaft upon which the helices are-mounted, take up rollers driven by the helices at a speed proportional to the v difference in speed between the two tables and a toothed rack on the rotary table and a 2;) toothed rack on the stationary table by which the dierential speed is transmitted to the rollers.

In witness whereof I aix my signature.

, JOANNY BARTHELEMY JABOULEY.

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