US570012A - Otto frowein and wilhelm oberstebrink - Google Patents

Description

(No Model.)

O. PROWEIN & W. OBERSTEBRIN-K.

I WOVEN TUBULAR FABRIC. No. 570,012. Patented Oct. 27, 1896.

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UNITED STATES PATENT OFFICE.

OTTO FROXVEIN AND ILHELM OBERSTEBRINK, OF BARMEN, GERMANY.

WOVEN TUBULAR FABRIC.

SPECIFICATION forming part of Letters Patent No. 570,012, dated October 27, 1896. Application filed December 10,1895. 7 Serial No. 571,632. (No model.)

To all whom it may concern.-

Be it known that we, OTTO FROWEIN and WILHELM OBERSTEBRINK, subjects of the Emperor of Germany, and residents of Bar inen, Rhenish Prussia, Germany, have invented a new and useful Improvement in \Voven Tubular Fabrics, of which the following is a specification.

()ur invention relates to improvements in hollow-woven ribbons or hose-bands.

The object of this invention is to make the same length of such ribbons in less time and cheaper than heretofore, and we attain these objects by giving to each side of the hollow double or hose-like ribbon its separate weftthread and by constructing the ribbon-loom accordingly, so that it will be able to lay in both wei'ts at the same time, means being'provided that the upper and the lower side of the hose-band may be joined or connected in such a manner that each side shall be provided with two selvage edges.

On the accompanying drawings, Figure 1 shows the arrangement of the shuttles in the loom for making the new ribbon, seen from the front. Fi 2 is a vertical section along line I I of Fig. 1. Fig. 3 is a vertical section along line 11 II of Fig. 1. Fig. 4 shows the arrangement of the heddles and the manner of forming the shed. Fig. 5 is a transverse section of a ribbon having separate selvages for the upper and for the lower side. Fig. 6 is a face view of this ribbon.

For making the new hollow ribbon we use, practically, three systems or sets of warpthreads, one set for forming the upper part of the hollow ribbon, another set for making the lower part of the hollow ribbon, and a third set for making the edges and connecting the upper web to the lower web, and thus form the hose-like article. Three sorts of sheds are accordingly necessary. The upper shed serves for making the upper ribbon, the lower one for producing the lower ribbon, and the third one, divided equally at both sides of the others, going from the lower shed of the lower ribbon to the upper shed of the upper ribbon. In normal state, when the shuttles are at rest and no shed is formed, the warp-threads are all spread in one horizontal plane, this plane forming the level of the lower shed of the upper side of the ribbon form the upper shedof this ribbon and part of them are pulled down, or they are rather left in the normal lower position, to form the lower shed of the upper ribbon, according to the manner of binding. CL and Z) in Fig. 4 show these warp-threads and o. and Z) are the respective heddles, the arrows a and b indicating the throw of the shed up and down.

0 and (Z are the warp-threads for making the lower part of the hollow ribbon, d lying in the same horizontal plane as b, both falling, therefore, together in Fig. 4E and forming apparently but one.

0 and d are the respective heddles and c and d are the arrows indicating the throw of this shed.

e and fare the warp-threads forming the connection of the two separate ribbons woven by passing a shuttle through each of the sheds a b and c d,,respectively, and e f are the corresponding heddles, while arrows e and f indicate the throw of these threads.

The fabric shown by Figs. 5 and 6 has two or more warp-threads i t' and It outside of the connecting-threads 6 f of samecharacter as the threads a b c do, the threads t' and 70 forming, then, open or special selvages for both the upper and the under side of the hollow ribbon, weft-threads g and h having the same character as the threads 9 and h in Figs. 5 and 6.

Now in order to run an extra shuttle for each separate side of the hollow ribbon at the same time through each of the two sheds and to be able to produce by these means double the quantity, or nearly that amount, as by the manner of working hitherto in use we use, in combination with the heddle arrangement represented in Fig. 4, the shuttle-driving device shown by Figs. 1, 2, and 3. V

A is a rack pulled to and fro, as usual in ribbon-looms, by the belts B and B alternately. O and G are guide-rollers for these belts. Rack A gears into wheels D D, mounted on pins D and D, which are fast in the frame M of the batten, .and Wheels D and D again drive the pinions E and E on pins E and E', respectively, which also carry the pinions I and F in gear with the racks of the shuttles K and K, as usual in ribbon-looms and of the same design.

L is the window or gap in the batten through which the warps a c b cl f c are passed, and it will thus be seen that while the shuttle K passes from left to right in the upper shed shuttle K is driven from right to left in the lower shed, difierent from the old arrange-- ment, where one shuttle makes a circular way from the upper shed down into the lower shed and back through the upper one again, and so on, requiring, therefore, four runs in four periods of time to make a complete binding in the upper part of the ribbon and in the lower part of the same, whereas with our new arrangement only two periods of time are required to do the same amount of work.

Ve are aware that prior to our invention hollow-woven ribbons have been made, and means for making the same are known, and we therefore do not claim, broadly, such ribbons, nor the devices generally for making such ribbons; but

\Vhat we do claim as our invention, and desire to secure by Letters Patent, is

In a hollow-woven ribbon the combination with the warp-threads a b of a separate weftthread g binding said warp-threads to form the upper side of the fabric, of warp-threads 0 cl", special weft-thread h binding said warp-threads 0 61 to form the lower side of the fabric, the weft-threads g and h being of different sizes, as described, the special warpthreads a f at both edges of the fabric and being bound also by the wefts g h connectin g both surfaces of the ribbons together, and of two or more warp-threads 11 and 7c of same order as the threads a b and 0 cl respectively bound separately by the weft-threads 9 and h respectively to form separate selvages for the upper and the lower side of the hollow-woven ribbon.

OTTO FROWVEIN.

XVILH. OBERSTEBRINK. lVitnesses:

A. STRAUSS, v

F. H. STRAUSS.

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