US 694108 A
Description (OCR text may contain errors)
No. 694,!08. Patented remhzs, I902.
5. NIERHAUS & P. KAISER;
(Application filed July 22, 1901.
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Wi/zzesqes 9 present invention.
UNTTED STATES PATENT OFFICE.
ERNST NIERHAUS AND PETER KAIsERfoF BARMEN, GERMANY.
SPECIFICATION forming part of Letters Patent No. 694,108, dated February 25, 1902.
Application filed July 22, 1901. Serial No. 69,312. (No model.)
To aZZ whom it may concern.-
Be it known that we, ERNST NIERHAUS and PETER KAISER, citizens of the German Empire, residing at Barmen, in the Province of Rhenish Prussia and Kingdom of Prussia, Germany, have invented certain new and usefullmprovements in Looms; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others'skilled in the art to which it appertains to make and use the same.
This invention relates to improvements in looms, by means of which it will be possible to vary the width of the Woven article at will by changing the spreading of the warpthreads, but at the same time varying also automatically the number of weft-threads in the same ratio-that is to say, to lay in more weft-threads when the width of the web is increased and diminish the number of weftthreads in the linear Width in proportion to the reduction of the width of the weaving. This has for its "object to produce a fabric which will have in all its parts, though varying in width without changing the number of the warp-threads, the same textural tightness and quality. Similar efiects have been produced formerly, but the means used were of very complicated nature, whereas we attain the object by a very simple device, as will be seen from the following description and drawings, in Which Figure 1 is a vertical view, partly in section, parallel to a line with the Warp-threads, showing those parts of the loom only which are necessary for the understanding of the Fig. 2 is a similar view showing the weft-regulator in a raised position. Fig. 3 shows part of the loom With the weft-regulator in a lowered position. Fig. 4 shows, on. an enlarged scale, the nature of the fabric produced.
By 1 is indicated the beater or lathe of the loom, which is moved to and fro in the usual manner and by wellknown means. The beater is provided with a so-called expansion-reed 2, the form of which in the present case is such that by raising and lowering the same in the beater the warp-threads are spread farther apart from each other in the one case and brought closer together in the other case.
The raising and lowering of the reed 2 in the lathe according to the shape of the Weaving to be produced are caused in the example shown by the cam 3, of suitable shape, and the shaft 4 of which is made to rotate, by means of intermediate gear, from the main shaft 5, as shown by Figs. 1 and 2.
The cam 3 acts upon the friction-roller 6 of a lever 6, the free end of which is connected by a rod 7 to one arm of the lever 9 at the top of the bracket 8. This lever 9 is connected by its other arm and a connecting-rod 10 to arocking lever 11, upon which the rod 10 is adj ustably fixed. The lever 11 is fixed to a rocking shaft 12 and causes this to rock to and fro. To the shaft 12 is also keyed a lever 13, Fig. l, to the free end of which is fixed a rod 14 and at the lower end of this is sus- 7c pended the reed 2.
It will understood from the description given and the figures shown that when the shaft 4 and the cam 3 are turned around the reed 2 will be raised and lowered according to the shape of the cam, and therefore the warp-threads will be shifted closer together or farther apart from each other, as the case maybe. This in itselfis not new. We, however, combine this device with the arrange- 8o ment which we will now describe. The gear turning the regulator of the cloth-beam 15 is set in motion by a cam 16 on shaft 17, which is driven independently of the shaft 4 from the main shaft 5 in the following manner: The cam 16 works upon the roller 18 of the lever 18 and rocks the latter, and to the free end of the lever 18 is linked a rod 19, which again is connected to the end of adouble-armed lever 20, the other end of which by a rod 21 is 0 connected to the ratchet-lever 22 of the regulator. A spring 23 pulls the lever 22 downward, and by the connection of thelevers and rods 21, 20, and 19 it causes the roller 18 of the lever 18 to be pressed constantly against 5 the cam 16. Now we fix to the frame of the loom a slide 24, which can be moved up and down vertically and to the lower end of which is fixed a set-screw 25 exactly above the lever 18,so thatthiscanstrikeagainst'theheadofthe 1:0 set-screw 25 when this is screwed down deep enough. By means of the rod 26 the slide is suspended to the lever28, carried on a bracket 27 at the top of the loom-frame, andthe free end of the lever 28 is connected by a rod 29 to a lever 30 on the rocking shaft 12. Hence it follows that by the movements backward and forward of the shaft 12 the reed in the lathe will be raised and lowered and also the slide 2-1 and both pieces (the reed and the slide) are raised or lowered, respectively, simultaneously. Then the reed is raised, the warpthreads are brought closer together; but at the same time the slide 24 and the set-screw are also raised, and therefore the lever 18 can make a larger stroke or swing out in a larger angle or are of the circle, and therefore the forward movement of the regulator and of the cloth-beam will be greater, more warp will be pulled forward,and consequently the weft-threads will not lie so close together and the tightness of the weaving with regard to the weft-threads will be reduced. If, on the contrary, the reed will be lowered, the warp-threads will be spread farther apart, and at the same time the slide 24, with the set-screw 25, will be lowered and brought nearer to the lever 18. The stroke of this will therefore be reduced, and consequently also the turning of the regulator and of the cloth-beam will be diminished, less warp will be pulled forward, and the weft-threads will be closer together with regard to the warpthreads and per unit of length of weaving produced.
The device shown and described thus answers the purpose of varying the tightness of the warp-threads and of the weft-threads in such a ratio with regard to each other that when the one part is brought closer together the other part is laid in wider apart, and vice versa.
What we therefore claim as our invention, and desire to secure by Letters Patent, is-
In a loomfor weaving articles changing in width without increasing the number of the warp-threads and where the number of the weft-threads per unit of length varies in proportion to the width of the fabric an expansion-reed 2 in a lathe 1, a rod 14 supporting said reed, a lever 13 keyed to a rocking shaft 12, a lever on said shaft, a rod 29 connecting said lever 30 to a lever 28 pivotally carried on a bracket 27 of the machine-frame, a rod 26 suspended on lever 28 and carrying a sliding piece 24 at its lower end, an adjustable set-screw 25 connected to said sliding piece, a lever 18 below the set-screw 25 and actuated by a cam 16 on shaft 17, in combination with a rod 19 linked to the free end of said lever 18, a lever 20 jointed to said rod 19, a connecting-rod 21 at the other end of lever 21 and connected to the ratchet-lever 22 of the regulator of the loom, the whole as described and illustrated and for the purpose set forth.
In testimony whereof we have afiixed our signatures in presence of two witnesses.
ERNST NIERHAUS. PETER KAISER.
J. A. RITTERSHAUs, FRITZ TEBERS.