US716352A - Pile-fabric loom. - Google Patents

Description

N0. 7|6.352. V Patented D00. l6, I902.

F. TONNAR, PILE FABRIC Loom. (Appnicatiim filed Jan. 7, 1902.) (No Model.)

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NITED STATES FELIX TONNAR, OF DIlLKEN, GERMANY.

PlLE-FABRIC LOOM.

SPECIFICATION forming part of Letters Patent No. 716,3 52, dated December 16, 1902.

Original application filed March 1, 1901, Serial No. 49,391. Divided and this application filed January 7, 1902. Serial No. 88,715. (No model.)

T at whom it may concern:

Be it known that I, FELIX TONNAR, a subject of the King of Prussia, German Emperor, residing at Diilken, in the Kingdom of Prussia and German Empire, have invented certain new and useful Improvements in Pile- Fabric Looms, of which the following is a specification.

This application is a division of that filed by me, Serial No. 49,391, dated March 1, 1901, for Letters Patent of the United States, the subject-matter of which is a loom for making several brimmed velvet ribbons at a time with one single beam supplying all the warps and with one single beam supplying all the pile.

My invention relates to improvements especially adapted tobe used with looms for weaving brimmed'velvet ribbons, and particularly with looms of the kind wherein instead of a separate roller for the warp and for the pile of each ribbon one single beam only for all the warps and one single beam for all the pile-threads of the several ribbons to be weft in the loom is used.

The object of my invention is to afford facilities for properly controlling the loom, so as to stop the latter in case of a weft-thread of any of the ribbons breaking or failing to run with the required speed and tension. I attain this object by the device illustrated in the accompanying drawings, in which- Figure 1 is a vertical longitudinal section of the loom provided with the new improvement, and Fig. 2 is a perspective view of the new controlling or detecting device.

As will be seen from the drawings, I use instead of a separate roller for the warp and for the pile of each ribbon one single beam only for all the warps and one single beam for all the pile-threads of the several ribbons to be weft in the loom at the same time; This arrangement would be inconvenient, for the reason that in case of one single weft-thread breaking the work of the loom would be entirely spoiled. To obviate said inconvenience, I use a device for stopping the loom as soon as a weft-thread fails to run with the required tension.

In the drawings, rollersof theloom.

1. and 2 are the delivering- 3 is the cutting-blade for severing or dividing the two combined ribbons.

5 is the lay, carrying two superposed rows of shuttles 6 and reciprocated by means of a cranked shaft in the usual manner.

In the loom there are two leaves 7 and 8 for the pile, two leaves 9 for the upper main warp, and two leaves 10 for the lower warp. By using two guiding-rods 11 and 12 said warps are held so as to form a double leaf for the two rows of shuttles which in racing across the warps bring in the threads of the woof into the upper and the lower ribbon at the same time. The warps 9 and 10 of all the ribbons to be woven at a time are supplied from the single beam 14, and on their way to the leaves the warps are supported by the roller 15 and the cross-rod 13 in usual manner. The pile-forming warp-threads 16 are also supplied to the several ribbons from a single beam 17 and are guided on their path, as in ordinary looms, by the rollers 18 and 19, forming the pilecontroller. The threads 16 then pass over the stationary guiding-rods 20 and 21 to the rod 22, oscillating about the rod 21. The controlling-rollers 18 and 19 continuously take up and feed just the amount of threads required for producing the pile of the double ribbon. In forming the lease the rod 22 assumes the position shown in dotted lines, the spring 23 serving to afiord the necessary tension to the pile.

On the cross-shaft 24:, rigidly connected with the frame of the loom, a series of lovers 25' is disposed so as to be free to rotate thereon. The forearms of said levers-one for each ribbon to be woven-are bent at right angles, so as to afford a seat for the several threads of the pile. (See Fig. 2.) The free arms of the lovers are longer and heavier in weight than the forearms, and therefore tend to turn the latter upward, thus exertiug a tensional strain upon the pile-threads resting upon the horizontally-bent ends of the arms. As long as the pile-threads are equally consumed in the loom said arms continuously remain in the position shown in full lines in Fig. 1. As soon, however, as a weft-thread breaks, no matter to which shuttle the thread belongs, in the respective double velvet ribbon no pile-thread is further consumed for the reason that the respective pile discontinues to be formed for want of weft-thread. Consequently the pile-threads uniformly supplied to the respective ribbon from the controller l9 become slack and allow the lever 25 to turn around its axle under the action of its heavier free arm, thus moving the forearm of the lever upward into the position shown in dotted lines in Fig. 1. The stroke of the free arm of the lever 25 is limited by the metallic rod 26, extending across the machine between the side frames and connected to the latter by some insulating material, such as wooden blocks firmly attached to the frame, one at both sides thereof and each having a bearinghole for receiving one end of the metallic rod. At the moment the free arm of the lever 25 comes in contact with said metallic rod the loom is stopped by the device to be described hereinafter.

The circuit 33 of a battery 34 is shown in the drawings to include an electromagnet 32, the metallic lever 25, and the metallic rod 26 and said circuit is closed at the moment the lever comes in contact with the rod. Assuming a weft-thread did break and the lever came in contact with the rod, thereby closing the circuit, the armature of the electromagnet will then be drawn in and will therebyin turn draw down the pawl 31 connected to the armature by means of a wire 36 or a similar connecting means.

The main shaft of the loom is provided with a cam 27, continuously lifting the arm 28 of a lever pivotally disposed at 29 once during each rotation of the main shaft. The vertical motion of the lever-arm 28 is transmitted through the vertical arm of the lever to a hook 30, located below the pawl and attached to said vertical arm, so as to move lengthwise to and fro at each reciprocation of the lever. When the loom is working, the hook can freely move to and fro without interfering with the pawl, which then is in a more upright position under the action of its counterweight 35. In case, however, that the pawl is drawn down by the electromagnet, as shown in Fig. 1, the hook will engage with the pawl and take the pawl along with it, thereby operating intermediate means of any well-known construction to stop the loom in a manner similar to that of ordinary looms, where the filling-fork serves as a stopping agent.

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

1. In combination in a pile-fabric loom, a stop-motion comprisinga device engaging the pile-warp threads and means for stopping the loom rendered operative by said device upon the slackening of the pile-thread due to the breakage of a weft-thread, substantially as described.

2. The combination, in a weaving-loom for manufacturing several velvet ribbons at a time, of a device for stopping the loom upon breakage of a weft-thread said device consisting of a series of levers 25 each engaging with a series of pile-threads of one of the ribbons to be woven at a time, a contact-piece 26 to engage with the lever, a battery 34 in the circuit of which said lever, the contactpiece and an electromagnet are included, and a pawl 31 to be actuated by said electromagnet to engage with a hook 30 of a reciprocating lever for stopping the loom, all essentially as described and illustrated.

3. The combination, in aweaving-loom for manufacturingseveral velvet ribbons at a time of one single beam supplying all the warps with one single beam for supplying all the piles and a device for stopping the loom upon breakage of a weft-thread said device consisting of a series of levers 25 each engaging with a series of pile-threads of one of the ribbons tobe woven at a time, a contactpiece 26 to engage with the lever, a battery 34 in the circuit of which said lever, the contact-piece and an electromagnet are included, and a pawl 31 to be actuated by said electromagnet to engage with a hook 30 of a reciprocating lever for stopping the loom, all essentially as described and shown.

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

FELIX TONNAR.

Witnesses:

WILHELM HANNEN, HANS M. MiiLLER.

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