US1268612A - Method of weaving. - Google Patents

Description

- A. T. QUANTZ.

METHOD OF WEAVING'.

APPLICATION FILED Aue.22.19|7.

1 6 6 1 2 Patented June 4, 1918.

'rn sra ns A METHOD OF WEAVING.

Speciflcationof Letters Patent. 1

Patented June 4, 1918.

Application filed August 22, 1917. Serial No. 187,634.

To all whom it may concern:

Be it known that I, ALBERT T. QUANTZ, a citizen of the United States, residing at Rock Hill, York county, State of South Carolina, have invented certain new and useful Improvements in Methods of Weaving, of which the following is a specification.

This invention relates particularly to weaving cord fabrics and has for its object to provide a novel method whereby the fabric may be woven more economically than present methods allow, and'which enables a better quality of fabric to be produced.

In the weaving of cord fabrics longitudinal stripes or ribs are formed therein by using warp threads of different thicknesses, the body of the warp being usually of single ply thread and the ribs of double ply thread. Pattern forming devices, such as a stationary reed, or the drop bars, in looms where 'a drop bar stop motion is employed, arrange the warp threads in patterns just before the warp enters the harness.

Due to the fact that the single ply warp threads wind sinuously over and under the woof threads while the thicker doubleply warp threads, owing to their greater stiflness, do not, but lie substantially straight in the cloth, it would seem that in weaving a given length 'of cloth the single 'ply warp threads supplied should be materially longer than the double ply warp threads supplied,

in order that the ends would match and waste be avoided.

In practice the single have been sized and rendered comparatively non-elastic while the double ply threads have been left in their original unsized and elastic condition, the single ply threads being wound upon a beam and the double ply threads being wound under considerabletension upon the same beam. The double ply threads are stretched in this Winding-on process so that their length in their stretched condition is equal to the length of the nonelastic single ply threads.

In the process of weaving it is desired that the shortening of the single ply threads due to their sinuous winding over and under the woof threads be approximately equal to the actual contraction of the double ply threads, resulting in the producply warp, threads tion'of a smooth cloth and no waste due to the two kinds of thread running out at different times.

Heretofore'two methods have been employed for supplying the different warp threads to the loom. In one method the single ply sized threads and the double ply unsized threads have been wound in alternate layers on the same beam, the double ply threads'being wound under tension, and both varieties passing over the same whip beam when-being run off into the loom.

Due, however, to the fact that the unsized threads must be wound upon the beam at equal intervals to secure uniform tension and that in weaving several of these threads are brought together by the pattern forming devices to form each cordrunning through the fabric, the unsized threads, after leaving the beam, cross over numbers of the single ply threadsin uniting to form a cord. p

This method of letting off the warp threads has proved'objectionable and impractical as the fibers projecting from the unsized thread warp around and entangle with the sized threads in rubbing against them'and as a result the breakages, asthe threads pass into the pattern forming devices, are excessive and the operation of the loom rendered unprofitable.

A second method' has been to wind the sized andunsized threads on separate beamsever, inasmuch as the weaver is greatly hindered by the presence of the additional beam, which renders difficult the tying up of broken ends,"the cloth produced is often uneven because of the tension on the unsized yarn being too great, and considerable waste is caused because of the practicable impossibility of getting both beams to run empty at the same time. The necessity of having two' beams and supports also renders this method more expensive than the single beam method.

This invention contemplates using a method which has the advantages of both of the above described methods and the disadvantages of neither. The preferred form of the apparatus used shown in the ac-Y companying drawings in which,

Figure 1 is a side view of a loom embody 10 in the drawings and the warp beam by 11, the usual brackets supporting the beam onthe frame. The sized single ply warp threads 12 are shown being drawn from the beam and passing over a guide or whip roll 13 and then downwardly into the drop wires 14' of the stop motion devices which are adapted tostop the loom in the case of breakage of a warp thread. The unsiz'ed two-ply ,cords 15 pass from the beam over the auxiliary guide loarfllti v and thence into from thefbea'm, separatinglthe two kinds the drop 'wires14i.v As shown in Fig, 1, the sized and the unsized threads are separated as they leave the beam and onl ffcome together again as they enter the drop wires,

' after which they have little or no tendency to become entangled. rom the drop Wires the warp passes to theharnes's mechanism, indicated by l7, in the drawings, where the weaving is done.

The whip rolls or guides 13 and 16 are mounted upon brackets 18 and 11 9, respec;

.tively, secured to a rocking member 20 which comprises a portion of a device for compensatlng unevennessm the tension of the .warp, whlch, however forms no part of this invention. The whip rolls or guides.

might be secured to the loom in other ways, provided they occupy positions which cause the warp threads to separate in the desired manner. i I I Another feature of invention is to provide the guide 16 with a plurality of staggered holes 2], in the top adapted to receive the tightffitti-n g stem portions of slotted members 22. .The slots in the rnexnhere 22 are sufficiently wide to permit the passage of a thread but will catch all, large knots and lumps and break the threads causing t a er motio e ces t rop a d" stop the machine. The slotted members also assist in forming the patterns by. properly grouping thcords 7 F rom---the foregoing description it will be obvious; that -thedisadvantages present in the methods of letting ofi' hitherto employed in cord fabric looms have been avoided and that the improved method disclosed-is more simple, inexpensive andefiicient, H I

Having thus described the invention, what is claimed and desired tobe secured by Letters Patent is:

1. The-method of we vi g abides of a I, single thickness having patterns-therein formed by arranging and groupin'gdifier ent kinds of warp threads, which consists in winding substantially equal lengths of each kind of warp threadupon a single beam,,drawing the threads simultaneously as they leave the beam 'and maintaining them separated until they are groupedto form the pattern.

2. The anta of weavinglfabri cs having unsi'z ed threads upon asingle beam, drawinglthe threads simultaneously from beam, separating the difierent kinds as they leave the beamand maintainihg them sepafl rated until 'they are grouped to form the pattern. p

3. Ihe method of weaving fabrics having patterns therein forme'd arr'an'ging ahd grouping. warp threads. organ least two diiE fe'rent plies the; threads having the lesser plies bein sized, which consists in winding substantia V y equal length s;c f the sized and ee th e r ro a gleb am ing the threfds simultaneously "fro'ih the", beain, separating-f the difieren'tlkinds astray leave the beamand maintaini'ng'thenifseparated until they are 'groupedjto formthe pattern. o; I i testimony whereof I do aflix .mytei nature.. I

7 Copies of thi s patilt may be obtained "for five cents ea'ch, by addressing the Commissioner of faiteiits,

Washington, 0.

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