US1423524A - Woven tubular fabric - Google Patents

Description

W. E. HILL AND C. V. FIRTH.

WOVEN TUBULAR FABRIC. APPLICATION HLED FEB.24,1919.

2,423,522, PatentedJu1y25,1922.

entre stares aant acerca.

WILLIAM E. HILL, OF PHILADELPHIA, AND

CAR-RODUS V. FIRTH, OIF ASHBOURNE,

PENNSYLVANIA, ASSIGNORS TO PORTER BROTHERS'TEXTILE COMPANY, 0F PHILA- DELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

WOVEN TBULAR FABRIC.

Specification of Letters Itatent.

raten-tea July 25, ieee.

Application led February 24, 1919.l Serial No. 2783944.

T o all whom it may concern.' Be it known that we, WILLIAM E. HILL and CARRoDUs V. F IRTH, respectively a citizen of the United States and a subject of the King of Great Britain, and residing, respectively, at Philadelphia, county of Philadelphia, and State of Pennsylvania, and at Ashbourne, county of Montgomery, and State of Pennsylvania, have invented a new and useful Improvement in Woven Tubular Fabrics, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, Which form a part of this specification.

on a loom, which is adaptable for envelopes, pillowcovers, etc., having a body lportion and a border along the four edges, of a di'erent weave from that of the body, and

in which the body and one end border are woven in two plies, while the other three borders are of single ply.

In the drawings, which illustrate a preferred embodiment ofour invention:

Fig. 1 is a pictorial plan view of a pillow cover as completed on the loom.

Fig. 2 is an enlarged detail section'on the line 2 2 ofFig. 1, the same being taken on the line of the weft and intersecting the war . Fig. 3 is a.' detail plan view of a small area of the fabric.

Figs. 4 and5 are enlarged detail sections on the lines 4-4 and 5-5 respectively of Fig. 1, both sections being taken on the line of the warp and intersecting the weft.

. It willbe understood that the specific and relatively plain weave shown is not an essential element of the invention, it being within the capacity of skilled weavers to vary the weave even to the extent of forming ornamental woven designs by dierent manipulations of the threads governed by suitable pattern mechanism. l

Referring to the the warp threads and b the weft or filling threads. lAssumingthat weaving starts at the lower edge of Fig. 1, which is the closed end of the tube, we first form a flat or non- 50 tubular fabric, as shown in Fi 4. A; y plurality of weft threads, prefera ly four, are inserted in each shed of warp threads, adjacent warp threads being arranged to operate oppositely. Preferably a single weft- Our invention consists of a fabric wovenl drawings a representsthread is employed, the shuttle being thrown across the warp twice in each direction `between successive reversals of position of the warp threads. This may continue all `the way across the loom, but we prefer, along the opposite sides of the loom, to manipulate the warp differently, as will be described in connection with the description of the tubular body of the fabric. Thus there is formed a closed end c.

In weaving the tubular portion of the fabric, the warp threads, except thosel to be included in the border along opposite ends of the fabric, may be considered to be divided into two sets.' When the shuttle is thrown in one direction the warp threads along opposite borders are arranged to form a shed, pairs of adjacent threads being respectively raised and lowered, while the warp threads of one of the two sets of main body warps are similarly arranged, the warpl threads of the other set of main body warps all being (say) lowered. This causes a pick of weft to interweave with all the warpv threads along opposite borders but with only 'the warp threads of the upper set of mam body warps. 0n the return of the shuttle, the outside warp threads maintain their position; thewarp threads of the set of main' Along opposite borders,v half the warp.

threads are always raised and half lowered, their positions being reversed before every fourth pick. rPhe extreme outside warp.

thread, however, is reversed after every pick. This operation continues along the greater part of the length of the fabric, thus forming a tubular body d and oppositely disposed lengthwise extendingl flat borders .e resembling in appearance the closed end o.

After the end of the tubular body portion` d is reached the same operation is continued except that the warp threads of each setof main body warps are reversed with only half the frequency so that the-two 4weft @threads will be enclosed in each Ished of warp, as illustrated in Fig. 5, thus forming a border f at the open end of the tube similar in appearance to the borders c and e.

We prefer, by a separate operation on a sewing machine, to sew a thread, by an operation'lcnown in the art as overcasting, along the edges of the borders c ande and for a short distance along the open end of the fabric inside each opposite border, thereby partly closing the opening of the tube Having now fully described our invention, what we claim and desire to protect by Letters Patent is:

A one piece bag or pillow cover having a substantially broad border on the four edges thereof, the border and the central portionA surrounded by the border being of different weaves, the central portion and the bordelalong one edge being woven in two plies,

while the borders along the other three edges are woven in a single ply, so that the four borders are substantially the same in appearance to forni a bag open at one end and closed along the other three ends with a surrounding broad border, which is arranged to project outwardly from the pillow to form a projecting edge trimming on the four edges of the pillow when the cover iS in place and the faces of the two ply border are secured to each other to close the open end of the cover.

In testimony of which invention, we have hereunto set our hands, at Philadelphia, Pennsylvania, on this 12th day of February. 1919.

VILLIAM E. HILL.

CARRODUS V. F IRTH. y

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